[NETFILTER]: Add H.323 conntrack/NAT helper

Signed-off-by: Jing Min Zhao <zhaojignmin@hotmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/netfilter_ipv4/ip_conntrack.h

@@ -29,6 +29,7 @@ union ip_conntrack_expect_proto {
 };
 
 /* Add protocol helper include file here */
+#include <linux/netfilter_ipv4/ip_conntrack_h323.h>
 #include <linux/netfilter_ipv4/ip_conntrack_pptp.h>
 #include <linux/netfilter_ipv4/ip_conntrack_amanda.h>
 #include <linux/netfilter_ipv4/ip_conntrack_ftp.h>
@@ -37,6 +38,7 @@ union ip_conntrack_expect_proto {
 /* per conntrack: application helper private data */
 union ip_conntrack_help {
 	/* insert conntrack helper private data (master) here */
+	struct ip_ct_h323_master ct_h323_info;
 	struct ip_ct_pptp_master ct_pptp_info;
 	struct ip_ct_ftp_master ct_ftp_info;
 	struct ip_ct_irc_master ct_irc_info;

include/linux/netfilter_ipv4/ip_conntrack_h323.h

+#ifndef _IP_CONNTRACK_H323_H
+#define _IP_CONNTRACK_H323_H
+
+#ifdef __KERNEL__
+
+#define RAS_PORT 1719
+#define Q931_PORT 1720
+#define H323_RTP_CHANNEL_MAX 4	/* Audio, video, FAX and other */
+
+/* This structure exists only once per master */
+struct ip_ct_h323_master {
+
+	/* Original and NATed Q.931 or H.245 signal ports */
+	u_int16_t sig_port[IP_CT_DIR_MAX];
+
+	/* Original and NATed RTP ports */
+	u_int16_t rtp_port[H323_RTP_CHANNEL_MAX][IP_CT_DIR_MAX];
+
+	union {
+		/* RAS connection timeout */
+		u_int32_t timeout;
+
+		/* Next TPKT length (for separate TPKT header and data) */
+		u_int16_t tpkt_len[IP_CT_DIR_MAX];
+	};
+};
+
+#endif
+
+#endif

net/ipv4/netfilter/Kconfig

@@ -168,6 +168,26 @@ config IP_NF_PPTP
 	  If you want to compile it as a module, say M here and read
 	  Documentation/modules.txt.  If unsure, say `N'.
 
+config IP_NF_H323
+	tristate  'H.323 protocol support'
+	depends on IP_NF_CONNTRACK
+	help
+	  H.323 is a VoIP signalling protocol from ITU-T. As one of the most
+	  important VoIP protocols, it is widely used by voice hardware and
+	  software including voice gateways, IP phones, Netmeeting, OpenPhone,
+	  Gnomemeeting, etc.
+
+	  With this module you can support H.323 on a connection tracking/NAT
+	  firewall.
+
+	  This module supports RAS, Fast-start, H.245 tunnelling, RTP/RTCP
+	  and T.120 based data and applications including audio, video, FAX,
+	  chat, whiteboard, file transfer, etc. For more information, please
+	  see http://nath323.sourceforge.net/.
+
+	  If you want to compile it as a module, say 'M' here and read
+	  Documentation/modules.txt.  If unsure, say 'N'.
+
 config IP_NF_QUEUE
 	tristate "IP Userspace queueing via NETLINK (OBSOLETE)"
 	help
@@ -484,6 +504,12 @@ config IP_NF_NAT_PPTP
 	default IP_NF_NAT if IP_NF_PPTP=y
 	default m if IP_NF_PPTP=m
 
+config IP_NF_NAT_H323
+	tristate
+	depends on IP_NF_IPTABLES!=n && IP_NF_CONNTRACK!=n && IP_NF_NAT!=n
+	default IP_NF_NAT if IP_NF_H323=y
+	default m if IP_NF_H323=m
+
 # mangle + specific targets
 config IP_NF_MANGLE
 	tristate "Packet mangling"

net/ipv4/netfilter/Makefile

@@ -10,6 +10,9 @@ iptable_nat-objs	:= ip_nat_rule.o ip_nat_standalone.o
 ip_conntrack_pptp-objs	:= ip_conntrack_helper_pptp.o ip_conntrack_proto_gre.o
 ip_nat_pptp-objs	:= ip_nat_helper_pptp.o ip_nat_proto_gre.o
 
+ip_conntrack_h323-objs := ip_conntrack_helper_h323.o ip_conntrack_helper_h323_asn1.o
+ip_nat_h323-objs := ip_nat_helper_h323.o
+
 # connection tracking
 obj-$(CONFIG_IP_NF_CONNTRACK) += ip_conntrack.o
 obj-$(CONFIG_IP_NF_NAT) += ip_nat.o
@@ -22,6 +25,7 @@ obj-$(CONFIG_IP_NF_CONNTRACK_NETLINK) += ip_conntrack_netlink.o
 obj-$(CONFIG_IP_NF_CT_PROTO_SCTP) += ip_conntrack_proto_sctp.o
 
 # connection tracking helpers
+obj-$(CONFIG_IP_NF_H323) += ip_conntrack_h323.o
 obj-$(CONFIG_IP_NF_PPTP) += ip_conntrack_pptp.o
 obj-$(CONFIG_IP_NF_AMANDA) += ip_conntrack_amanda.o
 obj-$(CONFIG_IP_NF_TFTP) += ip_conntrack_tftp.o
@@ -30,6 +34,7 @@ obj-$(CONFIG_IP_NF_IRC) += ip_conntrack_irc.o
 obj-$(CONFIG_IP_NF_NETBIOS_NS) += ip_conntrack_netbios_ns.o
 
 # NAT helpers 
+obj-$(CONFIG_IP_NF_NAT_H323) += ip_nat_h323.o
 obj-$(CONFIG_IP_NF_NAT_PPTP) += ip_nat_pptp.o
 obj-$(CONFIG_IP_NF_NAT_AMANDA) += ip_nat_amanda.o
 obj-$(CONFIG_IP_NF_NAT_TFTP) += ip_nat_tftp.o

net/ipv4/netfilter/ip_conntrack_helper_h323.c

+/*
+ * H.323 connection tracking helper
+ *
+ * Copyright (c) 2006 Jing Min Zhao <zhaojingmin@users.sourceforge.net>
+ *
+ * This source code is licensed under General Public License version 2.
+ *
+ * Based on the 'brute force' H.323 connection tracking module by
+ * Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
+ *
+ * For more information, please see http://nath323.sourceforge.net/
+ *
+ * Changes:
+ * 	2006-02-01 - initial version 0.1
+ *
+ *	2006-02-20 - version 0.2
+ *	  1. Changed source format to follow kernel conventions
+ *	  2. Deleted some unnecessary structures
+ *	  3. Minor fixes
+ *
+ * 	2006-03-10 - version 0.3
+ * 	  1. Added support for multiple TPKTs in one packet (suggested by
+ * 	     Patrick McHardy)
+ * 	  2. Avoid excessive stack usage (based on Patrick McHardy's patch)
+ * 	  3. Added support for non-linear skb (based on Patrick McHardy's patch)
+ * 	  4. Fixed missing H.245 module owner (Patrick McHardy)
+ * 	  5. Avoid long RAS expectation chains (Patrick McHardy)
+ * 	  6. Fixed incorrect __exit attribute (Patrick McHardy)
+ * 	  7. Eliminated unnecessary return code
+ * 	  8. Fixed incorrect use of NAT data from conntrack code (suggested by
+ * 	     Patrick McHardy)
+ * 	  9. Fixed TTL calculation error in RCF
+ * 	  10. Added TTL support in RRQ
+ * 	  11. Better support for separate TPKT header and data
+ *
+ * 	2006-03-15 - version 0.4
+ * 	  1. Added support for T.120 channels
+ * 	  2. Added parameter gkrouted_only (suggested by Patrick McHardy)
+ * 	  3. Splitted ASN.1 code and data (suggested by Patrick McHardy)
+ * 	  4. Sort ASN.1 data to avoid forwarding declarations (suggested by
+ * 	     Patrick McHardy)
+ * 	  5. Reset next TPKT data length in get_tpkt_data()
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/netfilter.h>
+#include <linux/ip.h>
+#include <net/tcp.h>
+#include <linux/netfilter_ipv4/ip_conntrack.h>
+#include <linux/netfilter_ipv4/ip_conntrack_core.h>
+#include <linux/netfilter_ipv4/ip_conntrack_helper.h>
+#include <linux/netfilter_ipv4/ip_conntrack_tuple.h>
+#include <linux/netfilter_ipv4/ip_conntrack_h323.h>
+#include <linux/moduleparam.h>
+
+#include "ip_conntrack_helper_h323_asn1.h"
+
+#if 0
+#define DEBUGP printk
+#else
+#define DEBUGP(format, args...)
+#endif
+
+/* Parameters */
+static int gkrouted_only = 1;
+module_param(gkrouted_only, int, 0600);
+MODULE_PARM_DESC(gkrouted_only, "only accept calls from gatekeeper");
+
+/* Hooks for NAT */
+int (*set_h245_addr_hook) (struct sk_buff ** pskb,
+			   unsigned char **data, int dataoff,
+			   H245_TransportAddress * addr,
+			   u_int32_t ip, u_int16_t port);
+int (*set_h225_addr_hook) (struct sk_buff ** pskb,
+			   unsigned char **data, int dataoff,
+			   TransportAddress * addr,
+			   u_int32_t ip, u_int16_t port);
+int (*set_sig_addr_hook) (struct sk_buff ** pskb,
+			  struct ip_conntrack * ct,
+			  enum ip_conntrack_info ctinfo,
+			  unsigned char **data,
+			  TransportAddress * addr, int count);
+int (*set_ras_addr_hook) (struct sk_buff ** pskb,
+			  struct ip_conntrack * ct,
+			  enum ip_conntrack_info ctinfo,
+			  unsigned char **data,
+			  TransportAddress * addr, int count);
+int (*nat_rtp_rtcp_hook) (struct sk_buff ** pskb,
+			  struct ip_conntrack * ct,
+			  enum ip_conntrack_info ctinfo,
+			  unsigned char **data, int dataoff,
+			  H245_TransportAddress * addr,
+			  u_int16_t port, u_int16_t rtp_port,
+			  struct ip_conntrack_expect * rtp_exp,
+			  struct ip_conntrack_expect * rtcp_exp);
+int (*nat_t120_hook) (struct sk_buff ** pskb,
+		      struct ip_conntrack * ct,
+		      enum ip_conntrack_info ctinfo,
+		      unsigned char **data, int dataoff,
+		      H245_TransportAddress * addr, u_int16_t port,
+		      struct ip_conntrack_expect * exp);
+int (*nat_h245_hook) (struct sk_buff ** pskb,
+		      struct ip_conntrack * ct,
+		      enum ip_conntrack_info ctinfo,
+		      unsigned char **data, int dataoff,
+		      TransportAddress * addr, u_int16_t port,
+		      struct ip_conntrack_expect * exp);
+int (*nat_q931_hook) (struct sk_buff ** pskb,
+		      struct ip_conntrack * ct,
+		      enum ip_conntrack_info ctinfo,
+		      unsigned char **data, TransportAddress * addr, int idx,
+		      u_int16_t port, struct ip_conntrack_expect * exp);
+
+
+static DEFINE_SPINLOCK(ip_h323_lock);
+static char *h323_buffer;
+
+/****************************************************************************/
+static int get_tpkt_data(struct sk_buff **pskb, struct ip_conntrack *ct,
+			 enum ip_conntrack_info ctinfo,
+			 unsigned char **data, int *datalen, int *dataoff)
+{
+	struct ip_ct_h323_master *info = &ct->help.ct_h323_info;
+	int dir = CTINFO2DIR(ctinfo);
+	struct tcphdr _tcph, *th;
+	int tcpdatalen;
+	int tcpdataoff;
+	unsigned char *tpkt;
+	int tpktlen;
+	int tpktoff;
+
+	/* Get TCP header */
+	th = skb_header_pointer(*pskb, (*pskb)->nh.iph->ihl * 4,
+				sizeof(_tcph), &_tcph);
+	if (th == NULL)
+		return 0;
+
+	/* Get TCP data offset */
+	tcpdataoff = (*pskb)->nh.iph->ihl * 4 + th->doff * 4;
+
+	/* Get TCP data length */
+	tcpdatalen = (*pskb)->len - tcpdataoff;
+	if (tcpdatalen <= 0)	/* No TCP data */
+		goto clear_out;
+
+	if (*data == NULL) {	/* first TPKT */
+		/* Get first TPKT pointer */
+		tpkt = skb_header_pointer(*pskb, tcpdataoff, tcpdatalen,
+					  h323_buffer);
+		BUG_ON(tpkt == NULL);
+
+		/* Validate TPKT identifier */
+		if (tcpdatalen < 4 || tpkt[0] != 0x03 || tpkt[1] != 0) {
+			/* Netmeeting sends TPKT header and data separately */
+			if (info->tpkt_len[dir] > 0) {
+				DEBUGP("ip_ct_h323: previous packet "
+				       "indicated separate TPKT data of %hu "
+				       "bytes\n", info->tpkt_len[dir]);
+				if (info->tpkt_len[dir] <= tcpdatalen) {
+					/* Yes, there was a TPKT header
+					 * received */
+					*data = tpkt;
+					*datalen = info->tpkt_len[dir];
+					*dataoff = 0;
+					goto out;
+				}
+
+				/* Fragmented TPKT */
+				if (net_ratelimit())
+					printk("ip_ct_h323: "
+					       "fragmented TPKT\n");
+				goto clear_out;
+			}
+
+			/* It is not even a TPKT */
+			return 0;
+		}
+		tpktoff = 0;
+	} else {		/* Next TPKT */
+		tpktoff = *dataoff + *datalen;
+		tcpdatalen -= tpktoff;
+		if (tcpdatalen <= 4)	/* No more TPKT */
+			goto clear_out;
+		tpkt = *data + *datalen;
+
+		/* Validate TPKT identifier */
+		if (tpkt[0] != 0x03 || tpkt[1] != 0)
+			goto clear_out;
+	}
+
+	/* Validate TPKT length */
+	tpktlen = tpkt[2] * 256 + tpkt[3];
+	if (tpktlen > tcpdatalen) {
+		if (tcpdatalen == 4) {	/* Separate TPKT header */
+			/* Netmeeting sends TPKT header and data separately */
+			DEBUGP("ip_ct_h323: separate TPKT header indicates "
+			       "there will be TPKT data of %hu bytes\n",
+			       tpktlen - 4);
+			info->tpkt_len[dir] = tpktlen - 4;
+			return 0;
+		}
+
+		if (net_ratelimit())
+			printk("ip_ct_h323: incomplete TPKT (fragmented?)\n");
+		goto clear_out;
+	}
+
+	/* This is the encapsulated data */
+	*data = tpkt + 4;
+	*datalen = tpktlen - 4;
+	*dataoff = tpktoff + 4;
+
+      out:
+	/* Clear TPKT length */
+	info->tpkt_len[dir] = 0;
+	return 1;
+
+      clear_out:
+	info->tpkt_len[dir] = 0;
+	return 0;
+}
+
+/****************************************************************************/
+int get_h245_addr(unsigned char *data, H245_TransportAddress * addr,
+		  u_int32_t * ip, u_int16_t * port)
+{
+	unsigned char *p;
+
+	if (addr->choice != eH245_TransportAddress_unicastAddress ||
+	    addr->unicastAddress.choice != eUnicastAddress_iPAddress)
+		return 0;
+
+	p = data + addr->unicastAddress.iPAddress.network;
+	*ip = htonl((p[0] << 24) | (p[1] << 16) | (p[2] << 8) | (p[3]));
+	*port = (p[4] << 8) | (p[5]);
+
+	return 1;
+}
+
+/****************************************************************************/
+static int expect_rtp_rtcp(struct sk_buff **pskb, struct ip_conntrack *ct,
+			   enum ip_conntrack_info ctinfo,
+			   unsigned char **data, int dataoff,
+			   H245_TransportAddress * addr)
+{
+	int dir = CTINFO2DIR(ctinfo);
+	int ret = 0;
+	u_int32_t ip;
+	u_int16_t port;
+	u_int16_t rtp_port;
+	struct ip_conntrack_expect *rtp_exp;
+	struct ip_conntrack_expect *rtcp_exp;
+
+	/* Read RTP or RTCP address */
+	if (!get_h245_addr(*data, addr, &ip, &port) ||
+	    ip != ct->tuplehash[dir].tuple.src.ip || port == 0)
+		return 0;
+
+	/* RTP port is even */
+	rtp_port = port & (~1);
+
+	/* Create expect for RTP */
+	if ((rtp_exp = ip_conntrack_expect_alloc(ct)) == NULL)
+		return -1;
+	rtp_exp->tuple.src.ip = ct->tuplehash[!dir].tuple.src.ip;
+	rtp_exp->tuple.src.u.udp.port = 0;
+	rtp_exp->tuple.dst.ip = ct->tuplehash[!dir].tuple.dst.ip;
+	rtp_exp->tuple.dst.u.udp.port = htons(rtp_port);
+	rtp_exp->tuple.dst.protonum = IPPROTO_UDP;
+	rtp_exp->mask.src.ip = 0xFFFFFFFF;
+	rtp_exp->mask.src.u.udp.port = 0;
+	rtp_exp->mask.dst.ip = 0xFFFFFFFF;
+	rtp_exp->mask.dst.u.udp.port = 0xFFFF;
+	rtp_exp->mask.dst.protonum = 0xFF;
+	rtp_exp->flags = 0;
+
+	/* Create expect for RTCP */
+	if ((rtcp_exp = ip_conntrack_expect_alloc(ct)) == NULL) {
+		ip_conntrack_expect_put(rtp_exp);
+		return -1;
+	}
+	rtcp_exp->tuple.src.ip = ct->tuplehash[!dir].tuple.src.ip;
+	rtcp_exp->tuple.src.u.udp.port = 0;
+	rtcp_exp->tuple.dst.ip = ct->tuplehash[!dir].tuple.dst.ip;
+	rtcp_exp->tuple.dst.u.udp.port = htons(rtp_port + 1);
+	rtcp_exp->tuple.dst.protonum = IPPROTO_UDP;
+	rtcp_exp->mask.src.ip = 0xFFFFFFFF;
+	rtcp_exp->mask.src.u.udp.port = 0;
+	rtcp_exp->mask.dst.ip = 0xFFFFFFFF;
+	rtcp_exp->mask.dst.u.udp.port = 0xFFFF;
+	rtcp_exp->mask.dst.protonum = 0xFF;
+	rtcp_exp->flags = 0;
+
+	if (ct->tuplehash[dir].tuple.src.ip !=
+	    ct->tuplehash[!dir].tuple.dst.ip && nat_rtp_rtcp_hook) {
+		/* NAT needed */
+		ret = nat_rtp_rtcp_hook(pskb, ct, ctinfo, data, dataoff,
+					addr, port, rtp_port, rtp_exp,
+					rtcp_exp);
+	} else {		/* Conntrack only */
+		rtp_exp->expectfn = NULL;
+		rtcp_exp->expectfn = NULL;
+
+		if (ip_conntrack_expect_related(rtp_exp) == 0) {
+			if (ip_conntrack_expect_related(rtcp_exp) == 0) {
+				DEBUGP("ip_ct_h323: expect RTP "
+				       "%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+				       NIPQUAD(rtp_exp->tuple.src.ip),
+				       ntohs(rtp_exp->tuple.src.u.udp.port),
+				       NIPQUAD(rtp_exp->tuple.dst.ip),
+				       ntohs(rtp_exp->tuple.dst.u.udp.port));
+				DEBUGP("ip_ct_h323: expect RTCP "
+				       "%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+				       NIPQUAD(rtcp_exp->tuple.src.ip),
+				       ntohs(rtcp_exp->tuple.src.u.udp.port),
+				       NIPQUAD(rtcp_exp->tuple.dst.ip),
+				       ntohs(rtcp_exp->tuple.dst.u.udp.port));
+			} else {
+				ip_conntrack_unexpect_related(rtp_exp);
+				ret = -1;
+			}
+		} else
+			ret = -1;
+	}
+
+	ip_conntrack_expect_put(rtp_exp);
+	ip_conntrack_expect_put(rtcp_exp);
+
+	return ret;
+}
+
+/****************************************************************************/
+static int expect_t120(struct sk_buff **pskb,
+		       struct ip_conntrack *ct,
+		       enum ip_conntrack_info ctinfo,
+		       unsigned char **data, int dataoff,
+		       H245_TransportAddress * addr)
+{
+	int dir = CTINFO2DIR(ctinfo);
+	int ret = 0;
+	u_int32_t ip;
+	u_int16_t port;
+	struct ip_conntrack_expect *exp = NULL;
+
+	/* Read T.120 address */
+	if (!get_h245_addr(*data, addr, &ip, &port) ||
+	    ip != ct->tuplehash[dir].tuple.src.ip || port == 0)
+		return 0;
+
+	/* Create expect for T.120 connections */
+	if ((exp = ip_conntrack_expect_alloc(ct)) == NULL)
+		return -1;
+	exp->tuple.src.ip = ct->tuplehash[!dir].tuple.src.ip;
+	exp->tuple.src.u.tcp.port = 0;
+	exp->tuple.dst.ip = ct->tuplehash[!dir].tuple.dst.ip;
+	exp->tuple.dst.u.tcp.port = htons(port);
+	exp->tuple.dst.protonum = IPPROTO_TCP;
+	exp->mask.src.ip = 0xFFFFFFFF;
+	exp->mask.src.u.tcp.port = 0;
+	exp->mask.dst.ip = 0xFFFFFFFF;
+	exp->mask.dst.u.tcp.port = 0xFFFF;
+	exp->mask.dst.protonum = 0xFF;
+	exp->flags = IP_CT_EXPECT_PERMANENT;	/* Accept multiple channels */
+
+	if (ct->tuplehash[dir].tuple.src.ip !=
+	    ct->tuplehash[!dir].tuple.dst.ip && nat_t120_hook) {
+		/* NAT needed */
+		ret = nat_t120_hook(pskb, ct, ctinfo, data, dataoff, addr,
+				    port, exp);
+	} else {		/* Conntrack only */
+		exp->expectfn = NULL;
+		if (ip_conntrack_expect_related(exp) == 0) {
+			DEBUGP("ip_ct_h323: expect T.120 "
+			       "%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+			       NIPQUAD(exp->tuple.src.ip),
+			       ntohs(exp->tuple.src.u.tcp.port),
+			       NIPQUAD(exp->tuple.dst.ip),
+			       ntohs(exp->tuple.dst.u.tcp.port));
+		} else
+			ret = -1;
+	}
+
+	ip_conntrack_expect_put(exp);
+
+	return ret;
+}
+
+/****************************************************************************/
+static int process_h245_channel(struct sk_buff **pskb,
+				struct ip_conntrack *ct,
+				enum ip_conntrack_info ctinfo,
+				unsigned char **data, int dataoff,
+				H2250LogicalChannelParameters * channel)
+{
+	int ret;
+
+	if (channel->options & eH2250LogicalChannelParameters_mediaChannel) {
+		/* RTP */
+		ret = expect_rtp_rtcp(pskb, ct, ctinfo, data, dataoff,
+				      &channel->mediaChannel);
+		if (ret < 0)
+			return -1;
+	}
+
+	if (channel->
+	    options & eH2250LogicalChannelParameters_mediaControlChannel) {
+		/* RTCP */
+		ret = expect_rtp_rtcp(pskb, ct, ctinfo, data, dataoff,
+				      &channel->mediaControlChannel);
+		if (ret < 0)
+			return -1;
+	}
+
+	return 0;
+}
+
+/****************************************************************************/
+static int process_olc(struct sk_buff **pskb, struct ip_conntrack *ct,
+		       enum ip_conntrack_info ctinfo,
+		       unsigned char **data, int dataoff,
+		       OpenLogicalChannel * olc)
+{
+	int ret;
+
+	DEBUGP("ip_ct_h323: OpenLogicalChannel\n");
+
+	if (olc->forwardLogicalChannelParameters.multiplexParameters.choice ==
+	    eOpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters_h2250LogicalChannelParameters)
+	{
+		ret = process_h245_channel(pskb, ct, ctinfo, data, dataoff,
+					   &olc->
+					   forwardLogicalChannelParameters.
+					   multiplexParameters.
+					   h2250LogicalChannelParameters);
+		if (ret < 0)
+			return -1;
+	}
+
+	if ((olc->options &
+	     eOpenLogicalChannel_reverseLogicalChannelParameters) &&
+	    (olc->reverseLogicalChannelParameters.options &
+	     eOpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters)
+	    && (olc->reverseLogicalChannelParameters.multiplexParameters.
+		choice ==
+		eOpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters_h2250LogicalChannelParameters))
+	{
+		ret =
+		    process_h245_channel(pskb, ct, ctinfo, data, dataoff,
+					 &olc->
+					 reverseLogicalChannelParameters.
+					 multiplexParameters.
+					 h2250LogicalChannelParameters);
+		if (ret < 0)
+			return -1;
+	}
+
+	if ((olc->options & eOpenLogicalChannel_separateStack) &&
+	    olc->forwardLogicalChannelParameters.dataType.choice ==
+	    eDataType_data &&
+	    olc->forwardLogicalChannelParameters.dataType.data.application.
+	    choice == eDataApplicationCapability_application_t120 &&
+	    olc->forwardLogicalChannelParameters.dataType.data.application.
+	    t120.choice == eDataProtocolCapability_separateLANStack &&
+	    olc->separateStack.networkAddress.choice ==
+	    eNetworkAccessParameters_networkAddress_localAreaAddress) {
+		ret = expect_t120(pskb, ct, ctinfo, data, dataoff,
+				  &olc->separateStack.networkAddress.
+				  localAreaAddress);
+		if (ret < 0)
+			return -1;
+	}
+
+	return 0;
+}
+
+/****************************************************************************/
+static int process_olca(struct sk_buff **pskb, struct ip_conntrack *ct,
+			enum ip_conntrack_info ctinfo,
+			unsigned char **data, int dataoff,
+			OpenLogicalChannelAck * olca)
+{
+	H2250LogicalChannelAckParameters *ack;
+	int ret;
+
+	DEBUGP("ip_ct_h323: OpenLogicalChannelAck\n");
+
+	if ((olca->options &
+	     eOpenLogicalChannelAck_reverseLogicalChannelParameters) &&
+	    (olca->reverseLogicalChannelParameters.options &
+	     eOpenLogicalChannelAck_reverseLogicalChannelParameters_multiplexParameters)
+	    && (olca->reverseLogicalChannelParameters.multiplexParameters.
+		choice ==
+		eOpenLogicalChannelAck_reverseLogicalChannelParameters_multiplexParameters_h2250LogicalChannelParameters))
+	{
+		ret = process_h245_channel(pskb, ct, ctinfo, data, dataoff,
+					   &olca->
+					   reverseLogicalChannelParameters.
+					   multiplexParameters.
+					   h2250LogicalChannelParameters);
+		if (ret < 0)
+			return -1;
+	}
+
+	if ((olca->options &
+	     eOpenLogicalChannelAck_forwardMultiplexAckParameters) &&
+	    (olca->forwardMultiplexAckParameters.choice ==
+	     eOpenLogicalChannelAck_forwardMultiplexAckParameters_h2250LogicalChannelAckParameters))
+	{
+		ack = &olca->forwardMultiplexAckParameters.
+		    h2250LogicalChannelAckParameters;
+		if (ack->options &
+		    eH2250LogicalChannelAckParameters_mediaChannel) {
+			/* RTP */
+			ret = expect_rtp_rtcp(pskb, ct, ctinfo, data, dataoff,
+					      &ack->mediaChannel);
+			if (ret < 0)
+				return -1;
+		}
+
+		if (ack->options &
+		    eH2250LogicalChannelAckParameters_mediaControlChannel) {
+			/* RTCP */
+			ret = expect_rtp_rtcp(pskb, ct, ctinfo, data, dataoff,
+					      &ack->mediaControlChannel);
+			if (ret < 0)
+				return -1;
+		}
+	}
+
+	return 0;
+}
+
+/****************************************************************************/
+static int process_h245(struct sk_buff **pskb, struct ip_conntrack *ct,
+			enum ip_conntrack_info ctinfo,
+			unsigned char **data, int dataoff,
+			MultimediaSystemControlMessage * mscm)
+{
+	switch (mscm->choice) {
+	case eMultimediaSystemControlMessage_request:
+		if (mscm->request.choice ==
+		    eRequestMessage_openLogicalChannel) {
+			return process_olc(pskb, ct, ctinfo, data, dataoff,
+					   &mscm->request.openLogicalChannel);
+		}
+		DEBUGP("ip_ct_h323: H.245 Request %d\n",
+		       mscm->request.choice);
+		break;
+	case eMultimediaSystemControlMessage_response:
+		if (mscm->response.choice ==
+		    eResponseMessage_openLogicalChannelAck) {
+			return process_olca(pskb, ct, ctinfo, data, dataoff,
+					    &mscm->response.
+					    openLogicalChannelAck);
+		}
+		DEBUGP("ip_ct_h323: H.245 Response %d\n",
+		       mscm->response.choice);
+		break;
+	default:
+		DEBUGP("ip_ct_h323: H.245 signal %d\n", mscm->choice);
+		break;
+	}
+
+	return 0;
+}
+
+/****************************************************************************/
+static int h245_help(struct sk_buff **pskb, struct ip_conntrack *ct,
+		     enum ip_conntrack_info ctinfo)
+{
+	static MultimediaSystemControlMessage mscm;
+	unsigned char *data = NULL;
+	int datalen;
+	int dataoff;
+	int ret;
+
+	/* Until there's been traffic both ways, don't look in packets. */
+	if (ctinfo != IP_CT_ESTABLISHED
+	    && ctinfo != IP_CT_ESTABLISHED + IP_CT_IS_REPLY) {
+		return NF_ACCEPT;
+	}
+	DEBUGP("ip_ct_h245: skblen = %u\n", (*pskb)->len);
+
+	spin_lock_bh(&ip_h323_lock);
+
+	/* Process each TPKT */
+	while (get_tpkt_data(pskb, ct, ctinfo, &data, &datalen, &dataoff)) {
+		DEBUGP("ip_ct_h245: TPKT %u.%u.%u.%u->%u.%u.%u.%u, len=%d\n",
+		       NIPQUAD((*pskb)->nh.iph->saddr),
+		       NIPQUAD((*pskb)->nh.iph->daddr), datalen);
+
+		/* Decode H.245 signal */
+		ret = DecodeMultimediaSystemControlMessage(data, datalen,
+							   &mscm);
+		if (ret < 0) {
+			if (net_ratelimit())
+				printk("ip_ct_h245: decoding error: %s\n",
+				       ret == H323_ERROR_BOUND ?
+				       "out of bound" : "out of range");
+			/* We don't drop when decoding error */
+			break;
+		}
+
+		/* Process H.245 signal */
+		if (process_h245(pskb, ct, ctinfo, &data, dataoff, &mscm) < 0)
+			goto drop;
+	}
+
+	spin_unlock_bh(&ip_h323_lock);
+	return NF_ACCEPT;
+
+      drop:
+	spin_unlock_bh(&ip_h323_lock);
+	if (net_ratelimit())
+		printk("ip_ct_h245: packet dropped\n");
+	return NF_DROP;
+}
+
+/****************************************************************************/
+static struct ip_conntrack_helper ip_conntrack_helper_h245 = {
+	.name = "H.245",
+	.me = THIS_MODULE,
+	.max_expected = H323_RTP_CHANNEL_MAX * 4 + 2 /* T.120 */ ,
+	.timeout = 240,
+	.tuple = {.dst = {.protonum = IPPROTO_TCP}},
+	.mask = {.src = {.u = {0xFFFF}},
+		 .dst = {.protonum = 0xFF}},
+	.help = h245_help
+};
+
+/****************************************************************************/
+void ip_conntrack_h245_expect(struct ip_conntrack *new,
+			      struct ip_conntrack_expect *this)
+{
+	write_lock_bh(&ip_conntrack_lock);
+	new->helper = &ip_conntrack_helper_h245;
+	write_unlock_bh(&ip_conntrack_lock);
+}
+
+/****************************************************************************/
+static int get_h225_addr(unsigned char *data, TransportAddress * addr,
+			 u_int32_t * ip, u_int16_t * port)
+{
+	unsigned char *p;
+
+	if (addr->choice != eTransportAddress_ipAddress)
+		return 0;
+
+	p = data + addr->ipAddress.ip;
+	*ip = htonl((p[0] << 24) | (p[1] << 16) | (p[2] << 8) | (p[3]));
+	*port = (p[4] << 8) | (p[5]);
+
+	return 1;
+}
+
+/****************************************************************************/
+static int expect_h245(struct sk_buff **pskb, struct ip_conntrack *ct,
+		       enum ip_conntrack_info ctinfo,
+		       unsigned char **data, int dataoff,
+		       TransportAddress * addr)
+{
+	int dir = CTINFO2DIR(ctinfo);
+	int ret = 0;
+	u_int32_t ip;
+	u_int16_t port;
+	struct ip_conntrack_expect *exp = NULL;
+
+	/* Read h245Address */
+	if (!get_h225_addr(*data, addr, &ip, &port) ||
+	    ip != ct->tuplehash[dir].tuple.src.ip || port == 0)
+		return 0;
+
+	/* Create expect for h245 connection */
+	if ((exp = ip_conntrack_expect_alloc(ct)) == NULL)
+		return -1;
+	exp->tuple.src.ip = ct->tuplehash[!dir].tuple.src.ip;
+	exp->tuple.src.u.tcp.port = 0;
+	exp->tuple.dst.ip = ct->tuplehash[!dir].tuple.dst.ip;
+	exp->tuple.dst.u.tcp.port = htons(port);
+	exp->tuple.dst.protonum = IPPROTO_TCP;
+	exp->mask.src.ip = 0xFFFFFFFF;
+	exp->mask.src.u.tcp.port = 0;
+	exp->mask.dst.ip = 0xFFFFFFFF;
+	exp->mask.dst.u.tcp.port = 0xFFFF;
+	exp->mask.dst.protonum = 0xFF;
+	exp->flags = 0;
+
+	if (ct->tuplehash[dir].tuple.src.ip !=
+	    ct->tuplehash[!dir].tuple.dst.ip && nat_h245_hook) {
+		/* NAT needed */
+		ret = nat_h245_hook(pskb, ct, ctinfo, data, dataoff, addr,
+				    port, exp);
+	} else {		/* Conntrack only */
+		exp->expectfn = ip_conntrack_h245_expect;
+
+		if (ip_conntrack_expect_related(exp) == 0) {
+			DEBUGP("ip_ct_q931: expect H.245 "
+			       "%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+			       NIPQUAD(exp->tuple.src.ip),
+			       ntohs(exp->tuple.src.u.tcp.port),
+			       NIPQUAD(exp->tuple.dst.ip),
+			       ntohs(exp->tuple.dst.u.tcp.port));
+		} else
+			ret = -1;
+	}
+
+	ip_conntrack_expect_put(exp);
+
+	return ret;
+}
+
+/****************************************************************************/
+static int process_setup(struct sk_buff **pskb, struct ip_conntrack *ct,
+			 enum ip_conntrack_info ctinfo,
+			 unsigned char **data, int dataoff,
+			 Setup_UUIE * setup)
+{
+	int dir = CTINFO2DIR(ctinfo);
+	int ret;
+	int i;
+	u_int32_t ip;
+	u_int16_t port;
+
+	DEBUGP("ip_ct_q931: Setup\n");
+
+	if (setup->options & eSetup_UUIE_h245Address) {
+		ret = expect_h245(pskb, ct, ctinfo, data, dataoff,
+				  &setup->h245Address);
+		if (ret < 0)
+			return -1;
+	}
+
+	if ((setup->options & eSetup_UUIE_destCallSignalAddress) &&
+	    (set_h225_addr_hook) &&
+	    get_h225_addr(*data, &setup->destCallSignalAddress, &ip, &port) &&
+	    ip != ct->tuplehash[!dir].tuple.src.ip) {
+		DEBUGP("ip_ct_q931: set destCallSignalAddress "
+		       "%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+		       NIPQUAD(ip), port,
+		       NIPQUAD(ct->tuplehash[!dir].tuple.src.ip),
+		       ntohs(ct->tuplehash[!dir].tuple.src.u.tcp.port));
+		ret = set_h225_addr_hook(pskb, data, dataoff,
+					 &setup->destCallSignalAddress,
+					 ct->tuplehash[!dir].tuple.src.ip,
+					 ntohs(ct->tuplehash[!dir].tuple.src.
+					       u.tcp.port));
+		if (ret < 0)
+			return -1;
+	}
+
+	if ((setup->options & eSetup_UUIE_sourceCallSignalAddress) &&
+	    (set_h225_addr_hook) &&
+	    get_h225_addr(*data, &setup->sourceCallSignalAddress, &ip, &port)
+	    && ip != ct->tuplehash[!dir].tuple.dst.ip) {
+		DEBUGP("ip_ct_q931: set sourceCallSignalAddress "
+		       "%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+		       NIPQUAD(ip), port,
+		       NIPQUAD(ct->tuplehash[!dir].tuple.dst.ip),
+		       ntohs(ct->tuplehash[!dir].tuple.dst.u.tcp.port));
+		ret = set_h225_addr_hook(pskb, data, dataoff,
+					 &setup->sourceCallSignalAddress,
+					 ct->tuplehash[!dir].tuple.dst.ip,
+					 ntohs(ct->tuplehash[!dir].tuple.dst.
+					       u.tcp.port));
+		if (ret < 0)
+			return -1;
+	}
+
+	if (setup->options & eSetup_UUIE_fastStart) {
+		for (i = 0; i < setup->fastStart.count; i++) {
+			ret = process_olc(pskb, ct, ctinfo, data, dataoff,
+					  &setup->fastStart.item[i]);
+			if (ret < 0)
+				return -1;
+		}
+	}
+
+	return 0;
+}
+
+/****************************************************************************/
+static int process_callproceeding(struct sk_buff **pskb,
+				  struct ip_conntrack *ct,
+				  enum ip_conntrack_info ctinfo,
+				  unsigned char **data, int dataoff,
+				  CallProceeding_UUIE * callproc)
+{
+	int ret;
+	int i;
+
+	DEBUGP("ip_ct_q931: CallProceeding\n");
+
+	if (callproc->options & eCallProceeding_UUIE_h245Address) {
+		ret = expect_h245(pskb, ct, ctinfo, data, dataoff,
+				  &callproc->h245Address);
+		if (ret < 0)
+			return -1;
+	}
+
+	if (callproc->options & eCallProceeding_UUIE_fastStart) {
+		for (i = 0; i < callproc->fastStart.count; i++) {
+			ret = process_olc(pskb, ct, ctinfo, data, dataoff,
+					  &callproc->fastStart.item[i]);
+			if (ret < 0)
+				return -1;
+		}
+	}
+
+	return 0;
+}
+
+/****************************************************************************/
+static int process_connect(struct sk_buff **pskb, struct ip_conntrack *ct,
+			   enum ip_conntrack_info ctinfo,
+			   unsigned char **data, int dataoff,
+			   Connect_UUIE * connect)
+{
+	int ret;
+	int i;
+
+	DEBUGP("ip_ct_q931: Connect\n");
+
+	if (connect->options & eConnect_UUIE_h245Address) {
+		ret = expect_h245(pskb, ct, ctinfo, data, dataoff,
+				  &connect->h245Address);
+		if (ret < 0)
+			return -1;
+	}
+
+	if (connect->options & eConnect_UUIE_fastStart) {
+		for (i = 0; i < connect->fastStart.count; i++) {
+			ret = process_olc(pskb, ct, ctinfo, data, dataoff,
+					  &connect->fastStart.item[i]);
+			if (ret < 0)
+				return -1;
+		}
+	}
+
+	return 0;
+}
+
+/****************************************************************************/
+static int process_alerting(struct sk_buff **pskb, struct ip_conntrack *ct,
+			    enum ip_conntrack_info ctinfo,
+			    unsigned char **data, int dataoff,
+			    Alerting_UUIE * alert)
+{
+	int ret;
+	int i;
+
+	DEBUGP("ip_ct_q931: Alerting\n");
+
+	if (alert->options & eAlerting_UUIE_h245Address) {
+		ret = expect_h245(pskb, ct, ctinfo, data, dataoff,
+				  &alert->h245Address);
+		if (ret < 0)
+			return -1;
+	}
+
+	if (alert->options & eAlerting_UUIE_fastStart) {
+		for (i = 0; i < alert->fastStart.count; i++) {
+			ret = process_olc(pskb, ct, ctinfo, data, dataoff,
+					  &alert->fastStart.item[i]);
+			if (ret < 0)
+				return -1;
+		}
+	}
+
+	return 0;
+}
+
+/****************************************************************************/
+static int process_information(struct sk_buff **pskb,
+			       struct ip_conntrack *ct,
+			       enum ip_conntrack_info ctinfo,
+			       unsigned char **data, int dataoff,
+			       Information_UUIE * info)
+{
+	int ret;
+	int i;
+
+	DEBUGP("ip_ct_q931: Information\n");
+
+	if (info->options & eInformation_UUIE_fastStart) {
+		for (i = 0; i < info->fastStart.count; i++) {
+			ret = process_olc(pskb, ct, ctinfo, data, dataoff,
+					  &info->fastStart.item[i]);
+			if (ret < 0)
+				return -1;
+		}
+	}
+
+	return 0;
+}
+
+/****************************************************************************/
+static int process_facility(struct sk_buff **pskb, struct ip_conntrack *ct,
+			    enum ip_conntrack_info ctinfo,
+			    unsigned char **data, int dataoff,
+			    Facility_UUIE * facility)
+{
+	int ret;
+	int i;
+
+	DEBUGP("ip_ct_q931: Facility\n");
+
+	if (facility->options & eFacility_UUIE_h245Address) {
+		ret = expect_h245(pskb, ct, ctinfo, data, dataoff,
+				  &facility->h245Address);
+		if (ret < 0)
+			return -1;
+	}
+
+	if (facility->options & eFacility_UUIE_fastStart) {
+		for (i = 0; i < facility->fastStart.count; i++) {
+			ret = process_olc(pskb, ct, ctinfo, data, dataoff,
+					  &facility->fastStart.item[i]);
+			if (ret < 0)
+				return -1;
+		}
+	}
+
+	return 0;
+}
+
+/****************************************************************************/
+static int process_progress(struct sk_buff **pskb, struct ip_conntrack *ct,
+			    enum ip_conntrack_info ctinfo,
+			    unsigned char **data, int dataoff,
+			    Progress_UUIE * progress)
+{
+	int ret;
+	int i;
+
+	DEBUGP("ip_ct_q931: Progress\n");
+
+	if (progress->options & eProgress_UUIE_h245Address) {
+		ret = expect_h245(pskb, ct, ctinfo, data, dataoff,
+				  &progress->h245Address);
+		if (ret < 0)
+			return -1;
+	}
+
+	if (progress->options & eProgress_UUIE_fastStart) {
+		for (i = 0; i < progress->fastStart.count; i++) {
+			ret = process_olc(pskb, ct, ctinfo, data, dataoff,
+					  &progress->fastStart.item[i]);
+			if (ret < 0)
+				return -1;
+		}
+	}
+
+	return 0;
+}
+
+/****************************************************************************/
+static int process_q931(struct sk_buff **pskb, struct ip_conntrack *ct,
+			enum ip_conntrack_info ctinfo,
+			unsigned char **data, int dataoff, Q931 * q931)
+{
+	H323_UU_PDU *pdu = &q931->UUIE.h323_uu_pdu;
+	int i;
+	int ret = 0;
+
+	switch (pdu->h323_message_body.choice) {
+	case eH323_UU_PDU_h323_message_body_setup:
+		ret = process_setup(pskb, ct, ctinfo, data, dataoff,
+				    &pdu->h323_message_body.setup);
+		break;
+	case eH323_UU_PDU_h323_message_body_callProceeding:
+		ret = process_callproceeding(pskb, ct, ctinfo, data, dataoff,
+					     &pdu->h323_message_body.
+					     callProceeding);
+		break;
+	case eH323_UU_PDU_h323_message_body_connect:
+		ret = process_connect(pskb, ct, ctinfo, data, dataoff,
+				      &pdu->h323_message_body.connect);
+		break;
+	case eH323_UU_PDU_h323_message_body_alerting:
+		ret = process_alerting(pskb, ct, ctinfo, data, dataoff,
+				       &pdu->h323_message_body.alerting);
+		break;
+	case eH323_UU_PDU_h323_message_body_information:
+		ret = process_information(pskb, ct, ctinfo, data, dataoff,
+					  &pdu->h323_message_body.
+					  information);
+		break;
+	case eH323_UU_PDU_h323_message_body_facility:
+		ret = process_facility(pskb, ct, ctinfo, data, dataoff,
+				       &pdu->h323_message_body.facility);
+		break;
+	case eH323_UU_PDU_h323_message_body_progress:
+		ret = process_progress(pskb, ct, ctinfo, data, dataoff,
+				       &pdu->h323_message_body.progress);
+		break;
+	default:
+		DEBUGP("ip_ct_q931: Q.931 signal %d\n",
+		       pdu->h323_message_body.choice);
+		break;
+	}
+
+	if (ret < 0)
+		return -1;
+
+	if (pdu->options & eH323_UU_PDU_h245Control) {
+		for (i = 0; i < pdu->h245Control.count; i++) {
+			ret = process_h245(pskb, ct, ctinfo, data, dataoff,
+					   &pdu->h245Control.item[i]);
+			if (ret < 0)
+				return -1;
+		}
+	}
+
+	return 0;
+}
+
+/****************************************************************************/
+static int q931_help(struct sk_buff **pskb, struct ip_conntrack *ct,
+		     enum ip_conntrack_info ctinfo)
+{
+	static Q931 q931;
+	unsigned char *data = NULL;
+	int datalen;
+	int dataoff;
+	int ret;
+
+	/* Until there's been traffic both ways, don't look in packets. */
+	if (ctinfo != IP_CT_ESTABLISHED
+	    && ctinfo != IP_CT_ESTABLISHED + IP_CT_IS_REPLY) {
+		return NF_ACCEPT;
+	}
+	DEBUGP("ip_ct_q931: skblen = %u\n", (*pskb)->len);
+
+	spin_lock_bh(&ip_h323_lock);
+
+	/* Process each TPKT */
+	while (get_tpkt_data(pskb, ct, ctinfo, &data, &datalen, &dataoff)) {
+		DEBUGP("ip_ct_q931: TPKT %u.%u.%u.%u->%u.%u.%u.%u, len=%d\n",
+		       NIPQUAD((*pskb)->nh.iph->saddr),
+		       NIPQUAD((*pskb)->nh.iph->daddr), datalen);
+
+		/* Decode Q.931 signal */
+		ret = DecodeQ931(data, datalen, &q931);
+		if (ret < 0) {
+			if (net_ratelimit())
+				printk("ip_ct_q931: decoding error: %s\n",
+				       ret == H323_ERROR_BOUND ?
+				       "out of bound" : "out of range");
+			/* We don't drop when decoding error */
+			break;
+		}
+
+		/* Process Q.931 signal */
+		if (process_q931(pskb, ct, ctinfo, &data, dataoff, &q931) < 0)
+			goto drop;
+	}
+
+	spin_unlock_bh(&ip_h323_lock);
+	return NF_ACCEPT;
+
+      drop:
+	spin_unlock_bh(&ip_h323_lock);
+	if (net_ratelimit())
+		printk("ip_ct_q931: packet dropped\n");
+	return NF_DROP;
+}
+
+/****************************************************************************/
+static struct ip_conntrack_helper ip_conntrack_helper_q931 = {
+	.name = "Q.931",
+	.me = THIS_MODULE,
+	.max_expected = H323_RTP_CHANNEL_MAX * 4 + 4 /* T.120 and H.245 */ ,
+	.timeout = 240,
+	.tuple = {.src = {.u = {__constant_htons(Q931_PORT)}},
+		  .dst = {.protonum = IPPROTO_TCP}},
+	.mask = {.src = {.u = {0xFFFF}},
+		 .dst = {.protonum = 0xFF}},
+	.help = q931_help
+};
+
+/****************************************************************************/
+void ip_conntrack_q931_expect(struct ip_conntrack *new,
+			      struct ip_conntrack_expect *this)
+{
+	write_lock_bh(&ip_conntrack_lock);
+	new->helper = &ip_conntrack_helper_q931;
+	write_unlock_bh(&ip_conntrack_lock);
+}
+
+/****************************************************************************/
+static unsigned char *get_udp_data(struct sk_buff **pskb, int *datalen)
+{
+	struct udphdr _uh, *uh;
+	int dataoff;
+
+	uh = skb_header_pointer(*pskb, (*pskb)->nh.iph->ihl * 4, sizeof(_uh),
+				&_uh);
+	if (uh == NULL)
+		return NULL;
+	dataoff = (*pskb)->nh.iph->ihl * 4 + sizeof(_uh);
+	if (dataoff >= (*pskb)->len)
+		return NULL;
+	*datalen = (*pskb)->len - dataoff;
+	return skb_header_pointer(*pskb, dataoff, *datalen, h323_buffer);
+}
+
+/****************************************************************************/
+static struct ip_conntrack_expect *find_expect(struct ip_conntrack *ct,
+					       u_int32_t ip, u_int16_t port)
+{
+	struct ip_conntrack_expect *exp;
+	struct ip_conntrack_tuple tuple;
+
+	tuple.src.ip = 0;
+	tuple.src.u.tcp.port = 0;
+	tuple.dst.ip = ip;
+	tuple.dst.u.tcp.port = htons(port);
+	tuple.dst.protonum = IPPROTO_TCP;
+
+	exp = __ip_conntrack_expect_find(&tuple);
+	if (exp->master == ct)
+		return exp;
+	return NULL;
+}
+
+/****************************************************************************/
+static int set_expect_timeout(struct ip_conntrack_expect *exp,
+			      unsigned timeout)
+{
+	if (!exp || !del_timer(&exp->timeout))
+		return 0;
+
+	exp->timeout.expires = jiffies + timeout * HZ;
+	add_timer(&exp->timeout);
+
+	return 1;
+}
+
+/****************************************************************************/
+static int expect_q931(struct sk_buff **pskb, struct ip_conntrack *ct,
+		       enum ip_conntrack_info ctinfo,
+		       unsigned char **data,
+		       TransportAddress * addr, int count)
+{
+	struct ip_ct_h323_master *info = &ct->help.ct_h323_info;
+	int dir = CTINFO2DIR(ctinfo);
+	int ret = 0;
+	int i;
+	u_int32_t ip;
+	u_int16_t port;
+	struct ip_conntrack_expect *exp;
+
+	/* Look for the first related address */
+	for (i = 0; i < count; i++) {
+		if (get_h225_addr(*data, &addr[i], &ip, &port) &&
+		    ip == ct->tuplehash[dir].tuple.src.ip && port != 0)
+			break;
+	}
+
+	if (i >= count)		/* Not found */
+		return 0;
+
+	/* Create expect for Q.931 */
+	if ((exp = ip_conntrack_expect_alloc(ct)) == NULL)
+		return -1;
+	exp->tuple.src.ip = gkrouted_only ?	/* only accept calls from GK? */
+	    ct->tuplehash[!dir].tuple.src.ip : 0;
+	exp->tuple.src.u.tcp.port = 0;
+	exp->tuple.dst.ip = ct->tuplehash[!dir].tuple.dst.ip;
+	exp->tuple.dst.u.tcp.port = htons(port);
+	exp->tuple.dst.protonum = IPPROTO_TCP;
+	exp->mask.src.ip = gkrouted_only ? 0xFFFFFFFF : 0;
+	exp->mask.src.u.tcp.port = 0;
+	exp->mask.dst.ip = 0xFFFFFFFF;
+	exp->mask.dst.u.tcp.port = 0xFFFF;
+	exp->mask.dst.protonum = 0xFF;
+	exp->flags = IP_CT_EXPECT_PERMANENT;	/* Accept multiple calls */
+
+	if (nat_q931_hook) {	/* Need NAT */
+		ret = nat_q931_hook(pskb, ct, ctinfo, data, addr, i,
+				    port, exp);
+	} else {		/* Conntrack only */
+		exp->expectfn = ip_conntrack_q931_expect;
+
+		if (ip_conntrack_expect_related(exp) == 0) {
+			DEBUGP("ip_ct_ras: expect Q.931 "
+			       "%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+			       NIPQUAD(exp->tuple.src.ip),
+			       ntohs(exp->tuple.src.u.tcp.port),
+			       NIPQUAD(exp->tuple.dst.ip),
+			       ntohs(exp->tuple.dst.u.tcp.port));
+
+			/* Save port for looking up expect in processing RCF */
+			info->sig_port[dir] = port;
+		} else
+			ret = -1;
+	}
+
+	ip_conntrack_expect_put(exp);
+
+	return ret;
+}
+
+/****************************************************************************/
+static int process_grq(struct sk_buff **pskb, struct ip_conntrack *ct,
+		       enum ip_conntrack_info ctinfo,
+		       unsigned char **data, GatekeeperRequest * grq)
+{
+	DEBUGP("ip_ct_ras: GRQ\n");
+
+	if (set_ras_addr_hook)	/* NATed */
+		return set_ras_addr_hook(pskb, ct, ctinfo, data,
+					 &grq->rasAddress, 1);
+	return 0;
+}
+
+/* Declare before using */
+static void ip_conntrack_ras_expect(struct ip_conntrack *new,
+				    struct ip_conntrack_expect *this);
+
+/****************************************************************************/
+static int process_gcf(struct sk_buff **pskb, struct ip_conntrack *ct,
+		       enum ip_conntrack_info ctinfo,
+		       unsigned char **data, GatekeeperConfirm * gcf)
+{
+	int dir = CTINFO2DIR(ctinfo);
+	int ret = 0;
+	u_int32_t ip;
+	u_int16_t port;
+	struct ip_conntrack_expect *exp;
+
+	DEBUGP("ip_ct_ras: GCF\n");
+
+	if (!get_h225_addr(*data, &gcf->rasAddress, &ip, &port))
+		return 0;
+
+	/* Registration port is the same as discovery port */
+	if (ip == ct->tuplehash[dir].tuple.src.ip &&
+	    port == ntohs(ct->tuplehash[dir].tuple.src.u.udp.port))
+		return 0;
+
+	/* Avoid RAS expectation loops. A GCF is never expected. */
+	if (test_bit(IPS_EXPECTED_BIT, &ct->status))
+		return 0;
+
+	/* Need new expect */
+	if ((exp = ip_conntrack_expect_alloc(ct)) == NULL)
+		return -1;
+	exp->tuple.src.ip = ct->tuplehash[!dir].tuple.src.ip;
+	exp->tuple.src.u.tcp.port = 0;
+	exp->tuple.dst.ip = ip;
+	exp->tuple.dst.u.tcp.port = htons(port);
+	exp->tuple.dst.protonum = IPPROTO_UDP;
+	exp->mask.src.ip = 0xFFFFFFFF;
+	exp->mask.src.u.tcp.port = 0;
+	exp->mask.dst.ip = 0xFFFFFFFF;
+	exp->mask.dst.u.tcp.port = 0xFFFF;
+	exp->mask.dst.protonum = 0xFF;
+	exp->flags = 0;
+	exp->expectfn = ip_conntrack_ras_expect;
+	if (ip_conntrack_expect_related(exp) == 0) {
+		DEBUGP("ip_ct_ras: expect RAS "
+		       "%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+		       NIPQUAD(exp->tuple.src.ip),
+		       ntohs(exp->tuple.src.u.tcp.port),
+		       NIPQUAD(exp->tuple.dst.ip),
+		       ntohs(exp->tuple.dst.u.tcp.port));
+	} else
+		ret = -1;
+
+	ip_conntrack_expect_put(exp);
+
+	return ret;
+}
+
+/****************************************************************************/
+static int process_rrq(struct sk_buff **pskb, struct ip_conntrack *ct,
+		       enum ip_conntrack_info ctinfo,
+		       unsigned char **data, RegistrationRequest * rrq)
+{
+	struct ip_ct_h323_master *info = &ct->help.ct_h323_info;
+	int ret;
+
+	DEBUGP("ip_ct_ras: RRQ\n");
+
+	ret = expect_q931(pskb, ct, ctinfo, data,
+			  rrq->callSignalAddress.item,
+			  rrq->callSignalAddress.count);
+	if (ret < 0)
+		return -1;
+
+	if (set_ras_addr_hook) {
+		ret = set_ras_addr_hook(pskb, ct, ctinfo, data,
+					rrq->rasAddress.item,
+					rrq->rasAddress.count);
+		if (ret < 0)
+			return -1;
+	}
+
+	if (rrq->options & eRegistrationRequest_timeToLive) {
+		DEBUGP("ip_ct_ras: RRQ TTL = %u seconds\n", rrq->timeToLive);
+		info->timeout = rrq->timeToLive;
+	} else
+		info->timeout = 0;
+
+	return 0;
+}
+
+/****************************************************************************/
+static int process_rcf(struct sk_buff **pskb, struct ip_conntrack *ct,
+		       enum ip_conntrack_info ctinfo,
+		       unsigned char **data, RegistrationConfirm * rcf)
+{
+	struct ip_ct_h323_master *info = &ct->help.ct_h323_info;
+	int dir = CTINFO2DIR(ctinfo);
+	int ret;
+	struct ip_conntrack_expect *exp;
+
+	DEBUGP("ip_ct_ras: RCF\n");
+
+	if (set_sig_addr_hook) {
+		ret = set_sig_addr_hook(pskb, ct, ctinfo, data,
+					rcf->callSignalAddress.item,
+					rcf->callSignalAddress.count);
+		if (ret < 0)
+			return -1;
+	}
+
+	if (rcf->options & eRegistrationConfirm_timeToLive) {
+		DEBUGP("ip_ct_ras: RCF TTL = %u seconds\n", rcf->timeToLive);
+		info->timeout = rcf->timeToLive;
+	}
+
+	if (info->timeout > 0) {
+		DEBUGP
+		    ("ip_ct_ras: set RAS connection timeout to %u seconds\n",
+		     info->timeout);
+		ip_ct_refresh_acct(ct, ctinfo, NULL, info->timeout * HZ);
+
+		/* Set expect timeout */
+		read_lock_bh(&ip_conntrack_lock);
+		exp = find_expect(ct, ct->tuplehash[dir].tuple.dst.ip,
+				  info->sig_port[!dir]);
+		if (exp) {
+			DEBUGP("ip_ct_ras: set Q.931 expect "
+			       "(%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu) "
+			       "timeout to %u seconds\n",
+			       NIPQUAD(exp->tuple.src.ip),
+			       ntohs(exp->tuple.src.u.tcp.port),
+			       NIPQUAD(exp->tuple.dst.ip),
+			       ntohs(exp->tuple.dst.u.tcp.port),
+			       info->timeout);
+			set_expect_timeout(exp, info->timeout);
+		}
+		read_unlock_bh(&ip_conntrack_lock);
+	}
+
+	return 0;
+}
+
+/****************************************************************************/
+static int process_urq(struct sk_buff **pskb, struct ip_conntrack *ct,
+		       enum ip_conntrack_info ctinfo,
+		       unsigned char **data, UnregistrationRequest * urq)
+{
+	struct ip_ct_h323_master *info = &ct->help.ct_h323_info;
+	int dir = CTINFO2DIR(ctinfo);
+	int ret;
+
+	DEBUGP("ip_ct_ras: URQ\n");
+
+	if (set_sig_addr_hook) {
+		ret = set_sig_addr_hook(pskb, ct, ctinfo, data,
+					urq->callSignalAddress.item,
+					urq->callSignalAddress.count);
+		if (ret < 0)
+			return -1;
+	}
+
+	/* Clear old expect */
+	ip_ct_remove_expectations(ct);
+	info->sig_port[dir] = 0;
+	info->sig_port[!dir] = 0;
+
+	/* Give it 30 seconds for UCF or URJ */
+	ip_ct_refresh_acct(ct, ctinfo, NULL, 30 * HZ);
+
+	return 0;
+}
+
+/****************************************************************************/
+static int process_arq(struct sk_buff **pskb, struct ip_conntrack *ct,
+		       enum ip_conntrack_info ctinfo,
+		       unsigned char **data, AdmissionRequest * arq)
+{
+	struct ip_ct_h323_master *info = &ct->help.ct_h323_info;
+	int dir = CTINFO2DIR(ctinfo);
+	u_int32_t ip;
+	u_int16_t port;
+
+	DEBUGP("ip_ct_ras: ARQ\n");
+
+	if ((arq->options & eAdmissionRequest_destCallSignalAddress) &&
+	    get_h225_addr(*data, &arq->destCallSignalAddress, &ip, &port) &&
+	    ip == ct->tuplehash[dir].tuple.src.ip &&
+	    port == info->sig_port[dir] && set_h225_addr_hook) {
+		/* Answering ARQ */
+		return set_h225_addr_hook(pskb, data, 0,
+					  &arq->destCallSignalAddress,
+					  ct->tuplehash[!dir].tuple.dst.ip,
+					  info->sig_port[!dir]);
+	}
+
+	if ((arq->options & eAdmissionRequest_srcCallSignalAddress) &&
+	    get_h225_addr(*data, &arq->srcCallSignalAddress, &ip, &port) &&
+	    ip == ct->tuplehash[dir].tuple.src.ip && set_h225_addr_hook) {
+		/* Calling ARQ */
+		return set_h225_addr_hook(pskb, data, 0,
+					  &arq->srcCallSignalAddress,
+					  ct->tuplehash[!dir].tuple.dst.ip,
+					  port);
+	}
+
+	return 0;
+}
+
+/****************************************************************************/
+static int process_acf(struct sk_buff **pskb, struct ip_conntrack *ct,
+		       enum ip_conntrack_info ctinfo,
+		       unsigned char **data, AdmissionConfirm * acf)
+{
+	int dir = CTINFO2DIR(ctinfo);
+	int ret = 0;
+	u_int32_t ip;
+	u_int16_t port;
+	struct ip_conntrack_expect *exp;
+
+	DEBUGP("ip_ct_ras: ACF\n");
+
+	if (!get_h225_addr(*data, &acf->destCallSignalAddress, &ip, &port))
+		return 0;
+
+	if (ip == ct->tuplehash[dir].tuple.dst.ip) {	/* Answering ACF */
+		if (set_sig_addr_hook)
+			return set_sig_addr_hook(pskb, ct, ctinfo, data,
+						 &acf->destCallSignalAddress,
+						 1);
+		return 0;
+	}
+
+	/* Need new expect */
+	if ((exp = ip_conntrack_expect_alloc(ct)) == NULL)
+		return -1;
+	exp->tuple.src.ip = ct->tuplehash[!dir].tuple.src.ip;
+	exp->tuple.src.u.tcp.port = 0;
+	exp->tuple.dst.ip = ip;
+	exp->tuple.dst.u.tcp.port = htons(port);
+	exp->tuple.dst.protonum = IPPROTO_TCP;
+	exp->mask.src.ip = 0xFFFFFFFF;
+	exp->mask.src.u.tcp.port = 0;
+	exp->mask.dst.ip = 0xFFFFFFFF;
+	exp->mask.dst.u.tcp.port = 0xFFFF;
+	exp->mask.dst.protonum = 0xFF;
+	exp->flags = IP_CT_EXPECT_PERMANENT;
+	exp->expectfn = ip_conntrack_q931_expect;
+
+	if (ip_conntrack_expect_related(exp) == 0) {
+		DEBUGP("ip_ct_ras: expect Q.931 "
+		       "%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+		       NIPQUAD(exp->tuple.src.ip),
+		       ntohs(exp->tuple.src.u.tcp.port),
+		       NIPQUAD(exp->tuple.dst.ip),
+		       ntohs(exp->tuple.dst.u.tcp.port));
+	} else
+		ret = -1;
+
+	ip_conntrack_expect_put(exp);
+
+	return ret;
+}
+
+/****************************************************************************/
+static int process_lrq(struct sk_buff **pskb, struct ip_conntrack *ct,
+		       enum ip_conntrack_info ctinfo,
+		       unsigned char **data, LocationRequest * lrq)
+{
+	DEBUGP("ip_ct_ras: LRQ\n");
+
+	if (set_ras_addr_hook)
+		return set_ras_addr_hook(pskb, ct, ctinfo, data,
+					 &lrq->replyAddress, 1);
+	return 0;
+}
+
+/****************************************************************************/
+static int process_lcf(struct sk_buff **pskb, struct ip_conntrack *ct,
+		       enum ip_conntrack_info ctinfo,
+		       unsigned char **data, LocationConfirm * lcf)
+{
+	int dir = CTINFO2DIR(ctinfo);
+	int ret = 0;
+	u_int32_t ip;
+	u_int16_t port;
+	struct ip_conntrack_expect *exp = NULL;
+
+	DEBUGP("ip_ct_ras: LCF\n");
+
+	if (!get_h225_addr(*data, &lcf->callSignalAddress, &ip, &port))
+		return 0;
+
+	/* Need new expect for call signal */
+	if ((exp = ip_conntrack_expect_alloc(ct)) == NULL)
+		return -1;
+	exp->tuple.src.ip = ct->tuplehash[!dir].tuple.src.ip;
+	exp->tuple.src.u.tcp.port = 0;
+	exp->tuple.dst.ip = ip;
+	exp->tuple.dst.u.tcp.port = htons(port);
+	exp->tuple.dst.protonum = IPPROTO_TCP;
+	exp->mask.src.ip = 0xFFFFFFFF;
+	exp->mask.src.u.tcp.port = 0;
+	exp->mask.dst.ip = 0xFFFFFFFF;
+	exp->mask.dst.u.tcp.port = 0xFFFF;
+	exp->mask.dst.protonum = 0xFF;
+	exp->flags = IP_CT_EXPECT_PERMANENT;
+	exp->expectfn = ip_conntrack_q931_expect;
+
+	if (ip_conntrack_expect_related(exp) == 0) {
+		DEBUGP("ip_ct_ras: expect Q.931 "
+		       "%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+		       NIPQUAD(exp->tuple.src.ip),
+		       ntohs(exp->tuple.src.u.tcp.port),
+		       NIPQUAD(exp->tuple.dst.ip),
+		       ntohs(exp->tuple.dst.u.tcp.port));
+	} else
+		ret = -1;
+
+	ip_conntrack_expect_put(exp);
+
+	/* Ignore rasAddress */
+
+	return ret;
+}
+
+/****************************************************************************/
+static int process_irr(struct sk_buff **pskb, struct ip_conntrack *ct,
+		       enum ip_conntrack_info ctinfo,
+		       unsigned char **data, InfoRequestResponse * irr)
+{
+	int ret;
+
+	DEBUGP("ip_ct_ras: IRR\n");
+
+	if (set_ras_addr_hook) {
+		ret = set_ras_addr_hook(pskb, ct, ctinfo, data,
+					&irr->rasAddress, 1);
+		if (ret < 0)
+			return -1;
+	}
+
+	if (set_sig_addr_hook) {
+		ret = set_sig_addr_hook(pskb, ct, ctinfo, data,
+					irr->callSignalAddress.item,
+					irr->callSignalAddress.count);
+		if (ret < 0)
+			return -1;
+	}
+
+	return 0;
+}
+
+/****************************************************************************/
+static int process_ras(struct sk_buff **pskb, struct ip_conntrack *ct,
+		       enum ip_conntrack_info ctinfo,
+		       unsigned char **data, RasMessage * ras)
+{
+	switch (ras->choice) {
+	case eRasMessage_gatekeeperRequest:
+		return process_grq(pskb, ct, ctinfo, data,
+				   &ras->gatekeeperRequest);
+	case eRasMessage_gatekeeperConfirm:
+		return process_gcf(pskb, ct, ctinfo, data,
+				   &ras->gatekeeperConfirm);
+	case eRasMessage_registrationRequest:
+		return process_rrq(pskb, ct, ctinfo, data,
+				   &ras->registrationRequest);
+	case eRasMessage_registrationConfirm:
+		return process_rcf(pskb, ct, ctinfo, data,
+				   &ras->registrationConfirm);
+	case eRasMessage_unregistrationRequest:
+		return process_urq(pskb, ct, ctinfo, data,
+				   &ras->unregistrationRequest);
+	case eRasMessage_admissionRequest:
+		return process_arq(pskb, ct, ctinfo, data,
+				   &ras->admissionRequest);
+	case eRasMessage_admissionConfirm:
+		return process_acf(pskb, ct, ctinfo, data,
+				   &ras->admissionConfirm);
+	case eRasMessage_locationRequest:
+		return process_lrq(pskb, ct, ctinfo, data,
+				   &ras->locationRequest);
+	case eRasMessage_locationConfirm:
+		return process_lcf(pskb, ct, ctinfo, data,
+				   &ras->locationConfirm);
+	case eRasMessage_infoRequestResponse:
+		return process_irr(pskb, ct, ctinfo, data,
+				   &ras->infoRequestResponse);
+	default:
+		DEBUGP("ip_ct_ras: RAS message %d\n", ras->choice);
+		break;
+	}
+
+	return 0;
+}
+
+/****************************************************************************/
+static int ras_help(struct sk_buff **pskb, struct ip_conntrack *ct,
+		    enum ip_conntrack_info ctinfo)
+{
+	static RasMessage ras;
+	unsigned char *data;
+	int datalen = 0;
+	int ret;
+
+	DEBUGP("ip_ct_ras: skblen = %u\n", (*pskb)->len);
+
+	spin_lock_bh(&ip_h323_lock);
+
+	/* Get UDP data */
+	data = get_udp_data(pskb, &datalen);
+	if (data == NULL)
+		goto accept;
+	DEBUGP("ip_ct_ras: RAS message %u.%u.%u.%u->%u.%u.%u.%u, len=%d\n",
+	       NIPQUAD((*pskb)->nh.iph->saddr),
+	       NIPQUAD((*pskb)->nh.iph->daddr), datalen);
+
+	/* Decode RAS message */
+	ret = DecodeRasMessage(data, datalen, &ras);
+	if (ret < 0) {
+		if (net_ratelimit())
+			printk("ip_ct_ras: decoding error: %s\n",
+			       ret == H323_ERROR_BOUND ?
+			       "out of bound" : "out of range");
+		goto accept;
+	}
+
+	/* Process RAS message */
+	if (process_ras(pskb, ct, ctinfo, &data, &ras) < 0)
+		goto drop;
+
+      accept:
+	spin_unlock_bh(&ip_h323_lock);
+	return NF_ACCEPT;
+
+      drop:
+	spin_unlock_bh(&ip_h323_lock);
+	if (net_ratelimit())
+		printk("ip_ct_ras: packet dropped\n");
+	return NF_DROP;
+}
+
+/****************************************************************************/
+static struct ip_conntrack_helper ip_conntrack_helper_ras = {
+	.name = "RAS",
+	.me = THIS_MODULE,
+	.max_expected = 32,
+	.timeout = 240,
+	.tuple = {.src = {.u = {__constant_htons(RAS_PORT)}},
+		  .dst = {.protonum = IPPROTO_UDP}},
+	.mask = {.src = {.u = {0xFFFE}},
+		 .dst = {.protonum = 0xFF}},
+	.help = ras_help,
+};
+
+/****************************************************************************/
+static void ip_conntrack_ras_expect(struct ip_conntrack *new,
+				    struct ip_conntrack_expect *this)
+{
+	write_lock_bh(&ip_conntrack_lock);
+	new->helper = &ip_conntrack_helper_ras;
+	write_unlock_bh(&ip_conntrack_lock);
+}
+
+/****************************************************************************/
+/* Not __exit - called from init() */
+static void fini(void)
+{
+	ip_conntrack_helper_unregister(&ip_conntrack_helper_ras);
+	ip_conntrack_helper_unregister(&ip_conntrack_helper_q931);
+	kfree(h323_buffer);
+	DEBUGP("ip_ct_h323: fini\n");
+}
+
+/****************************************************************************/
+static int __init init(void)
+{
+	int ret;
+
+	h323_buffer = kmalloc(65536, GFP_KERNEL);
+	if (!h323_buffer)
+		return -ENOMEM;
+	if ((ret = ip_conntrack_helper_register(&ip_conntrack_helper_q931)) ||
+	    (ret = ip_conntrack_helper_register(&ip_conntrack_helper_ras))) {
+		fini();
+		return ret;
+	}
+
+	DEBUGP("ip_ct_h323: init success\n");
+	return 0;
+}
+
+/****************************************************************************/
+module_init(init);
+module_exit(fini);
+
+EXPORT_SYMBOL(get_h245_addr);
+EXPORT_SYMBOL(get_h225_addr);
+EXPORT_SYMBOL(ip_conntrack_h245_expect);
+EXPORT_SYMBOL(ip_conntrack_q931_expect);
+EXPORT_SYMBOL(set_h245_addr_hook);
+EXPORT_SYMBOL(set_h225_addr_hook);
+EXPORT_SYMBOL(set_sig_addr_hook);
+EXPORT_SYMBOL(set_ras_addr_hook);
+EXPORT_SYMBOL(nat_rtp_rtcp_hook);
+EXPORT_SYMBOL(nat_t120_hook);
+EXPORT_SYMBOL(nat_h245_hook);
+EXPORT_SYMBOL(nat_q931_hook);
+
+MODULE_AUTHOR("Jing Min Zhao <zhaojingmin@users.sourceforge.net>");
+MODULE_DESCRIPTION("H.323 connection tracking helper");
+MODULE_LICENSE("GPL");

net/ipv4/netfilter/ip_conntrack_helper_h323_asn1.c

+/****************************************************************************
+ * ip_conntrack_helper_h323_asn1.c - BER and PER decoding library for H.323
+ * 			      	     conntrack/NAT module.
+ *
+ * Copyright (c) 2006 by Jing Min Zhao <zhaojingmin@hotmail.com>
+ *
+ * This source code is licensed under General Public License version 2.
+ *
+ * See ip_conntrack_helper_h323_asn1.h for details.
+ *
+ ****************************************************************************/
+
+#ifdef __KERNEL__
+#include <linux/kernel.h>
+#else
+#include <stdio.h>
+#endif
+#include "ip_conntrack_helper_h323_asn1.h"
+
+/* Trace Flag */
+#ifndef H323_TRACE
+#define H323_TRACE 0
+#endif
+
+#if H323_TRACE
+#define TAB_SIZE 4
+#define IFTHEN(cond, act) if(cond){act;}
+#ifdef __KERNEL__
+#define PRINT printk
+#else
+#define PRINT printf
+#endif
+#define FNAME(name) name,
+#else
+#define IFTHEN(cond, act)
+#define PRINT(fmt, args...)
+#define FNAME(name)
+#endif
+
+/* ASN.1 Types */
+#define NUL 0
+#define BOOL 1
+#define OID 2
+#define INT 3
+#define ENUM 4
+#define BITSTR 5
+#define NUMSTR 6
+#define NUMDGT 6
+#define TBCDSTR 6
+#define OCTSTR 7
+#define PRTSTR 7
+#define IA5STR 7
+#define GENSTR 7
+#define BMPSTR 8
+#define SEQ 9
+#define SET 9
+#define SEQOF 10
+#define SETOF 10
+#define CHOICE 11
+
+/* Constraint Types */
+#define FIXD 0
+/* #define BITS 1-8 */
+#define BYTE 9
+#define WORD 10
+#define CONS 11
+#define SEMI 12
+#define UNCO 13
+
+/* ASN.1 Type Attributes */
+#define SKIP 0
+#define STOP 1
+#define DECODE 2
+#define EXT 4
+#define OPEN 8
+#define OPT 16
+
+
+/* ASN.1 Field Structure */
+typedef struct field_t {
+#if H323_TRACE
+	char *name;
+#endif
+	unsigned char type;
+	unsigned char sz;
+	unsigned char lb;
+	unsigned char ub;
+	unsigned short attr;
+	unsigned short offset;
+	struct field_t *fields;
+} field_t;
+
+/* Bit Stream */
+typedef struct {
+	unsigned char *buf;
+	unsigned char *beg;
+	unsigned char *end;
+	unsigned char *cur;
+	unsigned bit;
+} bitstr_t;
+
+/* Tool Functions */
+#define INC_BIT(bs) if((++bs->bit)>7){bs->cur++;bs->bit=0;}
+#define INC_BITS(bs,b) if((bs->bit+=b)>7){bs->cur+=bs->bit>>3;bs->bit&=7;}
+#define BYTE_ALIGN(bs) if(bs->bit){bs->cur++;bs->bit=0;}
+#define CHECK_BOUND(bs,n) if(bs->cur+(n)>bs->end)return(H323_ERROR_BOUND)
+static unsigned get_len(bitstr_t * bs);
+static unsigned get_bit(bitstr_t * bs);
+static unsigned get_bits(bitstr_t * bs, unsigned b);
+static unsigned get_bitmap(bitstr_t * bs, unsigned b);
+static unsigned get_uint(bitstr_t * bs, int b);
+
+/* Decoder Functions */
+static int decode_nul(bitstr_t * bs, field_t * f, char *base, int level);
+static int decode_bool(bitstr_t * bs, field_t * f, char *base, int level);
+static int decode_oid(bitstr_t * bs, field_t * f, char *base, int level);
+static int decode_int(bitstr_t * bs, field_t * f, char *base, int level);
+static int decode_enum(bitstr_t * bs, field_t * f, char *base, int level);
+static int decode_bitstr(bitstr_t * bs, field_t * f, char *base, int level);
+static int decode_numstr(bitstr_t * bs, field_t * f, char *base, int level);
+static int decode_octstr(bitstr_t * bs, field_t * f, char *base, int level);
+static int decode_bmpstr(bitstr_t * bs, field_t * f, char *base, int level);
+static int decode_seq(bitstr_t * bs, field_t * f, char *base, int level);
+static int decode_seqof(bitstr_t * bs, field_t * f, char *base, int level);
+static int decode_choice(bitstr_t * bs, field_t * f, char *base, int level);
+
+/* Decoder Functions Vector */
+typedef int (*decoder_t) (bitstr_t *, field_t *, char *, int);
+static decoder_t Decoders[] = {
+	decode_nul,
+	decode_bool,
+	decode_oid,
+	decode_int,
+	decode_enum,
+	decode_bitstr,
+	decode_numstr,
+	decode_octstr,
+	decode_bmpstr,
+	decode_seq,
+	decode_seqof,
+	decode_choice,
+};
+
+/****************************************************************************
+ * H.323 Types
+ ****************************************************************************/
+#include "ip_conntrack_helper_h323_types.c"
+
+/****************************************************************************
+ * Functions
+ ****************************************************************************/
+/* Assume bs is aligned && v < 16384 */
+unsigned get_len(bitstr_t * bs)
+{
+	unsigned v;
+
+	v = *bs->cur++;
+
+	if (v & 0x80) {
+		v &= 0x3f;
+		v <<= 8;
+		v += *bs->cur++;
+	}
+
+	return v;
+}
+
+/****************************************************************************/
+unsigned get_bit(bitstr_t * bs)
+{
+	unsigned b = (*bs->cur) & (0x80 >> bs->bit);
+
+	INC_BIT(bs);
+
+	return b;
+}
+
+/****************************************************************************/
+/* Assume b <= 8 */
+unsigned get_bits(bitstr_t * bs, unsigned b)
+{
+	unsigned v, l;
+
+	v = (*bs->cur) & (0xffU >> bs->bit);
+	l = b + bs->bit;
+
+	if (l < 8) {
+		v >>= 8 - l;
+		bs->bit = l;
+	} else if (l == 8) {
+		bs->cur++;
+		bs->bit = 0;
+	} else {		/* l > 8 */
+
+		v <<= 8;
+		v += *(++bs->cur);
+		v >>= 16 - l;
+		bs->bit = l - 8;
+	}
+
+	return v;
+}
+
+/****************************************************************************/
+/* Assume b <= 32 */
+unsigned get_bitmap(bitstr_t * bs, unsigned b)
+{
+	unsigned v, l, shift, bytes;
+
+	if (!b)
+		return 0;
+
+	l = bs->bit + b;
+
+	if (l < 8) {
+		v = (unsigned) (*bs->cur) << (bs->bit + 24);
+		bs->bit = l;
+	} else if (l == 8) {
+		v = (unsigned) (*bs->cur++) << (bs->bit + 24);
+		bs->bit = 0;
+	} else {
+		for (bytes = l >> 3, shift = 24, v = 0; bytes;
+		     bytes--, shift -= 8)
+			v |= (unsigned) (*bs->cur++) << shift;
+
+		if (l < 32) {
+			v |= (unsigned) (*bs->cur) << shift;
+			v <<= bs->bit;
+		} else if (l > 32) {
+			v <<= bs->bit;
+			v |= (*bs->cur) >> (8 - bs->bit);
+		}
+
+		bs->bit = l & 0x7;
+	}
+
+	v &= 0xffffffff << (32 - b);
+
+	return v;
+}
+
+/****************************************************************************
+ * Assume bs is aligned and sizeof(unsigned int) == 4
+ ****************************************************************************/
+unsigned get_uint(bitstr_t * bs, int b)
+{
+	unsigned v = 0;
+
+	switch (b) {
+	case 4:
+		v |= *bs->cur++;
+		v <<= 8;
+	case 3:
+		v |= *bs->cur++;
+		v <<= 8;
+	case 2:
+		v |= *bs->cur++;
+		v <<= 8;
+	case 1:
+		v |= *bs->cur++;
+		break;
+	}
+	return v;
+}
+
+/****************************************************************************/
+int decode_nul(bitstr_t * bs, field_t * f, char *base, int level)
+{
+	PRINT("%*.s%s\n", level * TAB_SIZE, " ", f->name);
+
+	return H323_ERROR_NONE;
+}
+
+/****************************************************************************/
+int decode_bool(bitstr_t * bs, field_t * f, char *base, int level)
+{
+	PRINT("%*.s%s\n", level * TAB_SIZE, " ", f->name);
+
+	INC_BIT(bs);
+
+	CHECK_BOUND(bs, 0);
+	return H323_ERROR_NONE;
+}
+
+/****************************************************************************/
+int decode_oid(bitstr_t * bs, field_t * f, char *base, int level)
+{
+	int len;
+
+	PRINT("%*.s%s\n", level * TAB_SIZE, " ", f->name);
+
+	BYTE_ALIGN(bs);
+	CHECK_BOUND(bs, 1);
+	len = *bs->cur++;
+	bs->cur += len;
+
+	CHECK_BOUND(bs, 0);
+	return H323_ERROR_NONE;
+}
+
+/****************************************************************************/
+int decode_int(bitstr_t * bs, field_t * f, char *base, int level)
+{
+	unsigned len;
+
+	PRINT("%*.s%s", level * TAB_SIZE, " ", f->name);
+
+	switch (f->sz) {
+	case BYTE:		/* Range == 256 */
+		BYTE_ALIGN(bs);
+		bs->cur++;
+		break;
+	case WORD:		/* 257 <= Range <= 64K */
+		BYTE_ALIGN(bs);
+		bs->cur += 2;
+		break;
+	case CONS:		/* 64K < Range < 4G */
+		len = get_bits(bs, 2) + 1;
+		BYTE_ALIGN(bs);
+		if (base && (f->attr & DECODE)) {	/* timeToLive */
+			unsigned v = get_uint(bs, len) + f->lb;
+			PRINT(" = %u", v);
+			*((unsigned *) (base + f->offset)) = v;
+		}
+		bs->cur += len;
+		break;
+	case UNCO:
+		BYTE_ALIGN(bs);
+		CHECK_BOUND(bs, 2);
+		len = get_len(bs);
+		bs->cur += len;
+		break;
+	default:		/* 2 <= Range <= 255 */
+		INC_BITS(bs, f->sz);
+		break;
+	}
+
+	PRINT("\n");
+
+	CHECK_BOUND(bs, 0);
+	return H323_ERROR_NONE;
+}
+
+/****************************************************************************/
+int decode_enum(bitstr_t * bs, field_t * f, char *base, int level)
+{
+	PRINT("%*.s%s\n", level * TAB_SIZE, " ", f->name);
+
+	if ((f->attr & EXT) && get_bit(bs)) {
+		INC_BITS(bs, 7);
+	} else {
+		INC_BITS(bs, f->sz);
+	}
+
+	CHECK_BOUND(bs, 0);
+	return H323_ERROR_NONE;
+}
+
+/****************************************************************************/
+int decode_bitstr(bitstr_t * bs, field_t * f, char *base, int level)
+{
+	unsigned len;
+
+	PRINT("%*.s%s\n", level * TAB_SIZE, " ", f->name);
+
+	BYTE_ALIGN(bs);
+	switch (f->sz) {
+	case FIXD:		/* fixed length > 16 */
+		len = f->lb;
+		break;
+	case WORD:		/* 2-byte length */
+		CHECK_BOUND(bs, 2);
+		len = (*bs->cur++) << 8;
+		len += (*bs->cur++) + f->lb;
+		break;
+	case SEMI:
+		CHECK_BOUND(bs, 2);
+		len = get_len(bs);
+		break;
+	default:
+		len = 0;
+		break;
+	}
+
+	bs->cur += len >> 3;
+	bs->bit = len & 7;
+
+	CHECK_BOUND(bs, 0);
+	return H323_ERROR_NONE;
+}
+
+/****************************************************************************/
+int decode_numstr(bitstr_t * bs, field_t * f, char *base, int level)
+{
+	unsigned len;
+
+	PRINT("%*.s%s\n", level * TAB_SIZE, " ", f->name);
+
+	/* 2 <= Range <= 255 */
+	len = get_bits(bs, f->sz) + f->lb;
+
+	BYTE_ALIGN(bs);
+	INC_BITS(bs, (len << 2));
+
+	CHECK_BOUND(bs, 0);
+	return H323_ERROR_NONE;
+}
+
+/****************************************************************************/
+int decode_octstr(bitstr_t * bs, field_t * f, char *base, int level)
+{
+	unsigned len;
+
+	PRINT("%*.s%s", level * TAB_SIZE, " ", f->name);
+
+	switch (f->sz) {
+	case FIXD:		/* Range == 1 */
+		if (f->lb > 2) {
+			BYTE_ALIGN(bs);
+			if (base && (f->attr & DECODE)) {
+				/* The IP Address */
+				IFTHEN(f->lb == 4,
+				       PRINT(" = %d.%d.%d.%d:%d",
+					     bs->cur[0], bs->cur[1],
+					     bs->cur[2], bs->cur[3],
+					     bs->cur[4] * 256 + bs->cur[5]));
+				*((unsigned *) (base + f->offset)) =
+				    bs->cur - bs->buf;
+			}
+		}
+		len = f->lb;
+		break;
+	case BYTE:		/* Range == 256 */
+		BYTE_ALIGN(bs);
+		CHECK_BOUND(bs, 1);
+		len = (*bs->cur++) + f->lb;
+		break;
+	case SEMI:
+		BYTE_ALIGN(bs);
+		CHECK_BOUND(bs, 2);
+		len = get_len(bs) + f->lb;
+		break;
+	default:		/* 2 <= Range <= 255 */
+		len = get_bits(bs, f->sz) + f->lb;
+		BYTE_ALIGN(bs);
+		break;
+	}
+
+	bs->cur += len;
+
+	PRINT("\n");
+
+	CHECK_BOUND(bs, 0);
+	return H323_ERROR_NONE;
+}
+
+/****************************************************************************/
+int decode_bmpstr(bitstr_t * bs, field_t * f, char *base, int level)
+{
+	unsigned len;
+
+	PRINT("%*.s%s\n", level * TAB_SIZE, " ", f->name);
+
+	switch (f->sz) {
+	case BYTE:		/* Range == 256 */
+		BYTE_ALIGN(bs);
+		CHECK_BOUND(bs, 1);
+		len = (*bs->cur++) + f->lb;
+		break;
+	default:		/* 2 <= Range <= 255 */
+		len = get_bits(bs, f->sz) + f->lb;
+		BYTE_ALIGN(bs);
+		break;
+	}
+
+	bs->cur += len << 1;
+
+	CHECK_BOUND(bs, 0);
+	return H323_ERROR_NONE;
+}
+
+/****************************************************************************/
+int decode_seq(bitstr_t * bs, field_t * f, char *base, int level)
+{
+	unsigned ext, bmp, i, opt, len = 0, bmp2, bmp2_len;
+	int err;
+	field_t *son;
+	unsigned char *beg = NULL;
+
+	PRINT("%*.s%s\n", level * TAB_SIZE, " ", f->name);
+
+	/* Decode? */
+	base = (base && (f->attr & DECODE)) ? base + f->offset : NULL;
+
+	/* Extensible? */
+	ext = (f->attr & EXT) ? get_bit(bs) : 0;
+
+	/* Get fields bitmap */
+	bmp = get_bitmap(bs, f->sz);
+	if (base)
+		*(unsigned *) base = bmp;
+
+	/* Decode the root components */
+	for (i = opt = 0, son = f->fields; i < f->lb; i++, son++) {
+		if (son->attr & STOP) {
+			PRINT("%*.s%s\n", (level + 1) * TAB_SIZE, " ",
+			      son->name);
+			return H323_ERROR_STOP;
+		}
+
+		if (son->attr & OPT) {	/* Optional component */
+			if (!((0x80000000U >> (opt++)) & bmp))	/* Not exist */
+				continue;
+		}
+
+		/* Decode */
+		if (son->attr & OPEN) {	/* Open field */
+			CHECK_BOUND(bs, 2);
+			len = get_len(bs);
+			CHECK_BOUND(bs, len);
+			if (!base) {
+				PRINT("%*.s%s\n", (level + 1) * TAB_SIZE,
+				      " ", son->name);
+				bs->cur += len;
+				continue;
+			}
+			beg = bs->cur;
+
+			/* Decode */
+			if ((err = (Decoders[son->type]) (bs, son, base,
+							  level + 1)) >
+			    H323_ERROR_STOP)
+				return err;
+
+			bs->cur = beg + len;
+			bs->bit = 0;
+		} else if ((err = (Decoders[son->type]) (bs, son, base,
+							 level + 1)))
+			return err;
+	}
+
+	/* No extension? */
+	if (!ext)
+		return H323_ERROR_NONE;
+
+	/* Get the extension bitmap */
+	bmp2_len = get_bits(bs, 7) + 1;
+	CHECK_BOUND(bs, (bmp2_len + 7) >> 3);
+	bmp2 = get_bitmap(bs, bmp2_len);
+	bmp |= bmp2 >> f->sz;
+	if (base)
+		*(unsigned *) base = bmp;
+	BYTE_ALIGN(bs);
+
+	/* Decode the extension components */
+	for (opt = 0; opt < bmp2_len; opt++, i++, son++) {
+		if (son->attr & STOP) {
+			PRINT("%*.s%s\n", (level + 1) * TAB_SIZE, " ",
+			      son->name);
+			return H323_ERROR_STOP;
+		}
+
+		if (!((0x80000000 >> opt) & bmp2))	/* Not present */
+			continue;
+
+		/* Check Range */
+		if (i >= f->ub) {	/* Newer Version? */
+			CHECK_BOUND(bs, 2);
+			len = get_len(bs);
+			CHECK_BOUND(bs, len);
+			bs->cur += len;
+			continue;
+		}
+
+		CHECK_BOUND(bs, 2);
+		len = get_len(bs);
+		CHECK_BOUND(bs, len);
+		if (!base || !(son->attr & DECODE)) {
+			PRINT("%*.s%s\n", (level + 1) * TAB_SIZE, " ",
+			      son->name);
+			bs->cur += len;
+			continue;
+		}
+		beg = bs->cur;
+
+		if ((err = (Decoders[son->type]) (bs, son, base,
+						  level + 1)) >
+		    H323_ERROR_STOP)
+			return err;
+
+		bs->cur = beg + len;
+		bs->bit = 0;
+	}
+	return H323_ERROR_NONE;
+}
+
+/****************************************************************************/
+int decode_seqof(bitstr_t * bs, field_t * f, char *base, int level)
+{
+	unsigned count, effective_count = 0, i, len = 0;
+	int err;
+	field_t *son;
+	unsigned char *beg = NULL;
+
+	PRINT("%*.s%s\n", level * TAB_SIZE, " ", f->name);
+
+	/* Decode? */
+	base = (base && (f->attr & DECODE)) ? base + f->offset : NULL;
+
+	/* Decode item count */
+	switch (f->sz) {
+	case BYTE:
+		BYTE_ALIGN(bs);
+		CHECK_BOUND(bs, 1);
+		count = *bs->cur++;
+		break;
+	case WORD:
+		BYTE_ALIGN(bs);
+		CHECK_BOUND(bs, 2);
+		count = *bs->cur++;
+		count <<= 8;
+		count = *bs->cur++;
+		break;
+	case SEMI:
+		BYTE_ALIGN(bs);
+		CHECK_BOUND(bs, 2);
+		count = get_len(bs);
+		break;
+	default:
+		count = get_bits(bs, f->sz);
+		break;
+	}
+	count += f->lb;
+
+	/* Write Count */
+	if (base) {
+		effective_count = count > f->ub ? f->ub : count;
+		*(unsigned *) base = effective_count;
+		base += sizeof(unsigned);
+	}
+
+	/* Decode nested field */
+	son = f->fields;
+	if (base)
+		base -= son->offset;
+	for (i = 0; i < count; i++) {
+		if (son->attr & OPEN) {
+			BYTE_ALIGN(bs);
+			len = get_len(bs);
+			CHECK_BOUND(bs, len);
+			if (!base || !(son->attr & DECODE)) {
+				PRINT("%*.s%s\n", (level + 1) * TAB_SIZE,
+				      " ", son->name);
+				bs->cur += len;
+				continue;
+			}
+			beg = bs->cur;
+
+			if ((err = (Decoders[son->type]) (bs, son,
+							  i <
+							  effective_count ?
+							  base : NULL,
+							  level + 1)) >
+			    H323_ERROR_STOP)
+				return err;
+
+			bs->cur = beg + len;
+			bs->bit = 0;
+		} else
+		    if ((err = (Decoders[son->type]) (bs, son,
+						      i < effective_count ?
+						      base : NULL,
+						      level + 1)))
+			return err;
+
+		if (base)
+			base += son->offset;
+	}
+
+	return H323_ERROR_NONE;
+}
+
+
+/****************************************************************************/
+int decode_choice(bitstr_t * bs, field_t * f, char *base, int level)
+{
+	unsigned type, ext, len = 0;
+	int err;
+	field_t *son;
+	unsigned char *beg = NULL;
+
+	PRINT("%*.s%s\n", level * TAB_SIZE, " ", f->name);
+
+	/* Decode? */
+	base = (base && (f->attr & DECODE)) ? base + f->offset : NULL;
+
+	/* Decode the choice index number */
+	if ((f->attr & EXT) && get_bit(bs)) {
+		ext = 1;
+		type = get_bits(bs, 7) + f->lb;
+	} else {
+		ext = 0;
+		type = get_bits(bs, f->sz);
+	}
+
+	/* Check Range */
+	if (type >= f->ub) {	/* Newer version? */
+		BYTE_ALIGN(bs);
+		len = get_len(bs);
+		CHECK_BOUND(bs, len);
+		bs->cur += len;
+		return H323_ERROR_NONE;
+	}
+
+	/* Write Type */
+	if (base)
+		*(unsigned *) base = type;
+
+	/* Transfer to son level */
+	son = &f->fields[type];
+	if (son->attr & STOP) {
+		PRINT("%*.s%s\n", (level + 1) * TAB_SIZE, " ", son->name);
+		return H323_ERROR_STOP;
+	}
+
+	if (ext || (son->attr & OPEN)) {
+		BYTE_ALIGN(bs);
+		len = get_len(bs);
+		CHECK_BOUND(bs, len);
+		if (!base || !(son->attr & DECODE)) {
+			PRINT("%*.s%s\n", (level + 1) * TAB_SIZE, " ",
+			      son->name);
+			bs->cur += len;
+			return H323_ERROR_NONE;
+		}
+		beg = bs->cur;
+
+		if ((err = (Decoders[son->type]) (bs, son, base, level + 1)) >
+		    H323_ERROR_STOP)
+			return err;
+
+		bs->cur = beg + len;
+		bs->bit = 0;
+	} else if ((err = (Decoders[son->type]) (bs, son, base, level + 1)))
+		return err;
+
+	return H323_ERROR_NONE;
+}
+
+/****************************************************************************/
+int DecodeRasMessage(unsigned char *buf, size_t sz, RasMessage * ras)
+{
+	static field_t ras_message = {
+		FNAME("RasMessage") CHOICE, 5, 24, 32, DECODE | EXT,
+		0, _RasMessage
+	};
+	bitstr_t bs;
+
+	bs.buf = bs.beg = bs.cur = buf;
+	bs.end = buf + sz;
+	bs.bit = 0;
+
+	return decode_choice(&bs, &ras_message, (char *) ras, 0);
+}
+
+/****************************************************************************/
+static int DecodeH323_UserInformation(unsigned char *buf, unsigned char *beg,
+				      size_t sz, H323_UserInformation * uuie)
+{
+	static field_t h323_userinformation = {
+		FNAME("H323-UserInformation") SEQ, 1, 2, 2, DECODE | EXT,
+		0, _H323_UserInformation
+	};
+	bitstr_t bs;
+
+	bs.buf = buf;
+	bs.beg = bs.cur = beg;
+	bs.end = beg + sz;
+	bs.bit = 0;
+
+	return decode_seq(&bs, &h323_userinformation, (char *) uuie, 0);
+}
+
+/****************************************************************************/
+int DecodeMultimediaSystemControlMessage(unsigned char *buf, size_t sz,
+					 MultimediaSystemControlMessage *
+					 mscm)
+{
+	static field_t multimediasystemcontrolmessage = {
+		FNAME("MultimediaSystemControlMessage") CHOICE, 2, 4, 4,
+		DECODE | EXT, 0, _MultimediaSystemControlMessage
+	};
+	bitstr_t bs;
+
+	bs.buf = bs.beg = bs.cur = buf;
+	bs.end = buf + sz;
+	bs.bit = 0;
+
+	return decode_choice(&bs, &multimediasystemcontrolmessage,
+			     (char *) mscm, 0);
+}
+
+/****************************************************************************/
+int DecodeQ931(unsigned char *buf, size_t sz, Q931 * q931)
+{
+	unsigned char *p = buf;
+	int len;
+
+	if (!p || sz < 1)
+		return H323_ERROR_BOUND;
+
+	/* Protocol Discriminator */
+	if (*p != 0x08) {
+		PRINT("Unknown Protocol Discriminator\n");
+		return H323_ERROR_RANGE;
+	}
+	p++;
+	sz--;
+
+	/* CallReferenceValue */
+	if (sz < 1)
+		return H323_ERROR_BOUND;
+	len = *p++;
+	sz--;
+	if (sz < len)
+		return H323_ERROR_BOUND;
+	p += len;
+	sz -= len;
+
+	/* Message Type */
+	if (sz < 1)
+		return H323_ERROR_BOUND;
+	q931->MessageType = *p++;
+	PRINT("MessageType = %02X\n", q931->MessageType);
+	if (*p & 0x80) {
+		p++;
+		sz--;
+	}
+
+	/* Decode Information Elements */
+	while (sz > 0) {
+		if (*p == 0x7e) {	/* UserUserIE */
+			if (sz < 3)
+				break;
+			p++;
+			len = *p++ << 8;
+			len |= *p++;
+			sz -= 3;
+			if (sz < len)
+				break;
+			p++;
+			len--;
+			return DecodeH323_UserInformation(buf, p, len,
+							  &q931->UUIE);
+		}
+		p++;
+		sz--;
+		if (sz < 1)
+			break;
+		len = *p++;
+		if (sz < len)
+			break;
+		p += len;
+		sz -= len;
+	}
+
+	PRINT("Q.931 UUIE not found\n");
+
+	return H323_ERROR_BOUND;
+}

net/ipv4/netfilter/ip_conntrack_helper_h323_asn1.h

+/****************************************************************************
+ * ip_conntrack_helper_h323_asn1.h - BER and PER decoding library for H.323
+ * 			      	     conntrack/NAT module.
+ *
+ * Copyright (c) 2006 by Jing Min Zhao <zhaojingmin@hotmail.com>
+ *
+ * This source code is licensed under General Public License version 2.
+ *
+ *
+ * This library is based on H.225 version 4, H.235 version 2 and H.245
+ * version 7. It is extremely optimized to decode only the absolutely
+ * necessary objects in a signal for Linux kernel NAT module use, so don't
+ * expect it to be a full ASN.1 library.
+ *
+ * Features:
+ *
+ * 1. Small. The total size of code plus data is less than 20 KB (IA32).
+ * 2. Fast. Decoding Netmeeting's Setup signal 1 million times on a PIII 866
+ *    takes only 3.9 seconds.
+ * 3. No memory allocation. It uses a static object. No need to initialize or
+ *    cleanup.
+ * 4. Thread safe.
+ * 5. Support embedded architectures that has no misaligned memory access
+ *    support.
+ *
+ * Limitations:
+ *
+ * 1. At most 30 faststart entries. Actually this is limited by ethernet's MTU.
+ *    If a Setup signal contains more than 30 faststart, the packet size will
+ *    very likely exceed the MTU size, then the TPKT will be fragmented. I
+ *    don't know how to handle this in a Netfilter module. Anybody can help?
+ *    Although I think 30 is enough for most of the cases.
+ * 2. IPv4 addresses only.
+ *
+ ****************************************************************************/
+
+#ifndef _IP_CONNTRACK_HELPER_H323_ASN1_H_
+#define _IP_CONNTRACK_HELPER_H323_ASN1_H_
+
+/*****************************************************************************
+ * H.323 Types
+ ****************************************************************************/
+#include "ip_conntrack_helper_h323_types.h"
+
+typedef struct {
+	enum {
+		Q931_NationalEscape = 0x00,
+		Q931_Alerting = 0x01,
+		Q931_CallProceeding = 0x02,
+		Q931_Connect = 0x07,
+		Q931_ConnectAck = 0x0F,
+		Q931_Progress = 0x03,
+		Q931_Setup = 0x05,
+		Q931_SetupAck = 0x0D,
+		Q931_Resume = 0x26,
+		Q931_ResumeAck = 0x2E,
+		Q931_ResumeReject = 0x22,
+		Q931_Suspend = 0x25,
+		Q931_SuspendAck = 0x2D,
+		Q931_SuspendReject = 0x21,
+		Q931_UserInformation = 0x20,
+		Q931_Disconnect = 0x45,
+		Q931_Release = 0x4D,
+		Q931_ReleaseComplete = 0x5A,
+		Q931_Restart = 0x46,
+		Q931_RestartAck = 0x4E,
+		Q931_Segment = 0x60,
+		Q931_CongestionCtrl = 0x79,
+		Q931_Information = 0x7B,
+		Q931_Notify = 0x6E,
+		Q931_Status = 0x7D,
+		Q931_StatusEnquiry = 0x75,
+		Q931_Facility = 0x62
+	} MessageType;
+	H323_UserInformation UUIE;
+} Q931;
+
+/*****************************************************************************
+ * Decode Functions Return Codes
+ ****************************************************************************/
+
+#define H323_ERROR_NONE 0	/* Decoded successfully */
+#define H323_ERROR_STOP 1	/* Decoding stopped, not really an error */
+#define H323_ERROR_BOUND -1
+#define H323_ERROR_RANGE -2
+
+
+/*****************************************************************************
+ * Decode Functions
+ ****************************************************************************/
+
+int DecodeRasMessage(unsigned char *buf, size_t sz, RasMessage * ras);
+int DecodeQ931(unsigned char *buf, size_t sz, Q931 * q931);
+int DecodeMultimediaSystemControlMessage(unsigned char *buf, size_t sz,
+					 MultimediaSystemControlMessage *
+					 mscm);
+
+#endif

net/ipv4/netfilter/ip_conntrack_helper_h323_types.c

+/* Generated by Jing Min Zhao's ASN.1 parser, Mar 15 2006
+ *
+ * Copyright (c) 2006 Jing Min Zhao <zhaojingmin@users.sourceforge.net>
+ *
+ * This source code is licensed under General Public License version 2.
+ */
+
+static field_t _TransportAddress_ipAddress[] = {	/* SEQUENCE */
+	{FNAME("ip") OCTSTR, FIXD, 4, 0, DECODE,
+	 offsetof(TransportAddress_ipAddress, ip), NULL},
+	{FNAME("port") INT, WORD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _TransportAddress_ipSourceRoute_route[] = {	/* SEQUENCE OF */
+	{FNAME("item") OCTSTR, FIXD, 4, 0, SKIP, 0, NULL},
+};
+
+static field_t _TransportAddress_ipSourceRoute_routing[] = {	/* CHOICE */
+	{FNAME("strict") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("loose") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _TransportAddress_ipSourceRoute[] = {	/* SEQUENCE */
+	{FNAME("ip") OCTSTR, FIXD, 4, 0, SKIP, 0, NULL},
+	{FNAME("port") INT, WORD, 0, 0, SKIP, 0, NULL},
+	{FNAME("route") SEQOF, SEMI, 0, 0, SKIP, 0,
+	 _TransportAddress_ipSourceRoute_route},
+	{FNAME("routing") CHOICE, 1, 2, 2, SKIP | EXT, 0,
+	 _TransportAddress_ipSourceRoute_routing},
+};
+
+static field_t _TransportAddress_ipxAddress[] = {	/* SEQUENCE */
+	{FNAME("node") OCTSTR, FIXD, 6, 0, SKIP, 0, NULL},
+	{FNAME("netnum") OCTSTR, FIXD, 4, 0, SKIP, 0, NULL},
+	{FNAME("port") OCTSTR, FIXD, 2, 0, SKIP, 0, NULL},
+};
+
+static field_t _TransportAddress_ip6Address[] = {	/* SEQUENCE */
+	{FNAME("ip") OCTSTR, FIXD, 16, 0, SKIP, 0, NULL},
+	{FNAME("port") INT, WORD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _H221NonStandard[] = {	/* SEQUENCE */
+	{FNAME("t35CountryCode") INT, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("t35Extension") INT, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("manufacturerCode") INT, WORD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _NonStandardIdentifier[] = {	/* CHOICE */
+	{FNAME("object") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("h221NonStandard") SEQ, 0, 3, 3, SKIP | EXT, 0,
+	 _H221NonStandard},
+};
+
+static field_t _NonStandardParameter[] = {	/* SEQUENCE */
+	{FNAME("nonStandardIdentifier") CHOICE, 1, 2, 2, SKIP | EXT, 0,
+	 _NonStandardIdentifier},
+	{FNAME("data") OCTSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _TransportAddress[] = {	/* CHOICE */
+	{FNAME("ipAddress") SEQ, 0, 2, 2, DECODE,
+	 offsetof(TransportAddress, ipAddress), _TransportAddress_ipAddress},
+	{FNAME("ipSourceRoute") SEQ, 0, 4, 4, SKIP | EXT, 0,
+	 _TransportAddress_ipSourceRoute},
+	{FNAME("ipxAddress") SEQ, 0, 3, 3, SKIP, 0,
+	 _TransportAddress_ipxAddress},
+	{FNAME("ip6Address") SEQ, 0, 2, 2, SKIP | EXT, 0,
+	 _TransportAddress_ip6Address},
+	{FNAME("netBios") OCTSTR, FIXD, 16, 0, SKIP, 0, NULL},
+	{FNAME("nsap") OCTSTR, 5, 1, 0, SKIP, 0, NULL},
+	{FNAME("nonStandardAddress") SEQ, 0, 2, 2, SKIP, 0,
+	 _NonStandardParameter},
+};
+
+static field_t _AliasAddress[] = {	/* CHOICE */
+	{FNAME("dialedDigits") NUMDGT, 7, 1, 0, SKIP, 0, NULL},
+	{FNAME("h323-ID") BMPSTR, BYTE, 1, 0, SKIP, 0, NULL},
+	{FNAME("url-ID") IA5STR, WORD, 1, 0, SKIP, 0, NULL},
+	{FNAME("transportID") CHOICE, 3, 7, 7, SKIP | EXT, 0, NULL},
+	{FNAME("email-ID") IA5STR, WORD, 1, 0, SKIP, 0, NULL},
+	{FNAME("partyNumber") CHOICE, 3, 5, 5, SKIP | EXT, 0, NULL},
+	{FNAME("mobileUIM") CHOICE, 1, 2, 2, SKIP | EXT, 0, NULL},
+};
+
+static field_t _Setup_UUIE_sourceAddress[] = {	/* SEQUENCE OF */
+	{FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
+};
+
+static field_t _VendorIdentifier[] = {	/* SEQUENCE */
+	{FNAME("vendor") SEQ, 0, 3, 3, SKIP | EXT, 0, _H221NonStandard},
+	{FNAME("productId") OCTSTR, BYTE, 1, 0, SKIP | OPT, 0, NULL},
+	{FNAME("versionId") OCTSTR, BYTE, 1, 0, SKIP | OPT, 0, NULL},
+};
+
+static field_t _GatekeeperInfo[] = {	/* SEQUENCE */
+	{FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+	 _NonStandardParameter},
+};
+
+static field_t _H310Caps[] = {	/* SEQUENCE */
+	{FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+	 _NonStandardParameter},
+	{FNAME("dataRatesSupported") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _H320Caps[] = {	/* SEQUENCE */
+	{FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+	 _NonStandardParameter},
+	{FNAME("dataRatesSupported") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _H321Caps[] = {	/* SEQUENCE */
+	{FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+	 _NonStandardParameter},
+	{FNAME("dataRatesSupported") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _H322Caps[] = {	/* SEQUENCE */
+	{FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+	 _NonStandardParameter},
+	{FNAME("dataRatesSupported") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _H323Caps[] = {	/* SEQUENCE */
+	{FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+	 _NonStandardParameter},
+	{FNAME("dataRatesSupported") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _H324Caps[] = {	/* SEQUENCE */
+	{FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+	 _NonStandardParameter},
+	{FNAME("dataRatesSupported") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _VoiceCaps[] = {	/* SEQUENCE */
+	{FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+	 _NonStandardParameter},
+	{FNAME("dataRatesSupported") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _T120OnlyCaps[] = {	/* SEQUENCE */
+	{FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+	 _NonStandardParameter},
+	{FNAME("dataRatesSupported") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _SupportedProtocols[] = {	/* CHOICE */
+	{FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP, 0,
+	 _NonStandardParameter},
+	{FNAME("h310") SEQ, 1, 1, 3, SKIP | EXT, 0, _H310Caps},
+	{FNAME("h320") SEQ, 1, 1, 3, SKIP | EXT, 0, _H320Caps},
+	{FNAME("h321") SEQ, 1, 1, 3, SKIP | EXT, 0, _H321Caps},
+	{FNAME("h322") SEQ, 1, 1, 3, SKIP | EXT, 0, _H322Caps},
+	{FNAME("h323") SEQ, 1, 1, 3, SKIP | EXT, 0, _H323Caps},
+	{FNAME("h324") SEQ, 1, 1, 3, SKIP | EXT, 0, _H324Caps},
+	{FNAME("voice") SEQ, 1, 1, 3, SKIP | EXT, 0, _VoiceCaps},
+	{FNAME("t120-only") SEQ, 1, 1, 3, SKIP | EXT, 0, _T120OnlyCaps},
+	{FNAME("nonStandardProtocol") SEQ, 2, 3, 3, SKIP | EXT, 0, NULL},
+	{FNAME("t38FaxAnnexbOnly") SEQ, 2, 5, 5, SKIP | EXT, 0, NULL},
+};
+
+static field_t _GatewayInfo_protocol[] = {	/* SEQUENCE OF */
+	{FNAME("item") CHOICE, 4, 9, 11, SKIP | EXT, 0, _SupportedProtocols},
+};
+
+static field_t _GatewayInfo[] = {	/* SEQUENCE */
+	{FNAME("protocol") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+	 _GatewayInfo_protocol},
+	{FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+	 _NonStandardParameter},
+};
+
+static field_t _McuInfo[] = {	/* SEQUENCE */
+	{FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+	 _NonStandardParameter},
+	{FNAME("protocol") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+};
+
+static field_t _TerminalInfo[] = {	/* SEQUENCE */
+	{FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+	 _NonStandardParameter},
+};
+
+static field_t _EndpointType[] = {	/* SEQUENCE */
+	{FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+	 _NonStandardParameter},
+	{FNAME("vendor") SEQ, 2, 3, 3, SKIP | EXT | OPT, 0,
+	 _VendorIdentifier},
+	{FNAME("gatekeeper") SEQ, 1, 1, 1, SKIP | EXT | OPT, 0,
+	 _GatekeeperInfo},
+	{FNAME("gateway") SEQ, 2, 2, 2, SKIP | EXT | OPT, 0, _GatewayInfo},
+	{FNAME("mcu") SEQ, 1, 1, 2, SKIP | EXT | OPT, 0, _McuInfo},
+	{FNAME("terminal") SEQ, 1, 1, 1, SKIP | EXT | OPT, 0, _TerminalInfo},
+	{FNAME("mc") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("undefinedNode") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("set") BITSTR, FIXD, 32, 0, SKIP | OPT, 0, NULL},
+	{FNAME("supportedTunnelledProtocols") SEQOF, SEMI, 0, 0, SKIP | OPT,
+	 0, NULL},
+};
+
+static field_t _Setup_UUIE_destinationAddress[] = {	/* SEQUENCE OF */
+	{FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
+};
+
+static field_t _Setup_UUIE_destExtraCallInfo[] = {	/* SEQUENCE OF */
+	{FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
+};
+
+static field_t _Setup_UUIE_destExtraCRV[] = {	/* SEQUENCE OF */
+	{FNAME("item") INT, WORD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _Setup_UUIE_conferenceGoal[] = {	/* CHOICE */
+	{FNAME("create") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("join") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("invite") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("capability-negotiation") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("callIndependentSupplementaryService") NUL, FIXD, 0, 0, SKIP,
+	 0, NULL},
+};
+
+static field_t _Q954Details[] = {	/* SEQUENCE */
+	{FNAME("conferenceCalling") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("threePartyService") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _QseriesOptions[] = {	/* SEQUENCE */
+	{FNAME("q932Full") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("q951Full") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("q952Full") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("q953Full") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("q955Full") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("q956Full") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("q957Full") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("q954Info") SEQ, 0, 2, 2, SKIP | EXT, 0, _Q954Details},
+};
+
+static field_t _CallType[] = {	/* CHOICE */
+	{FNAME("pointToPoint") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("oneToN") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("nToOne") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("nToN") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _H245_NonStandardIdentifier_h221NonStandard[] = {	/* SEQUENCE */
+	{FNAME("t35CountryCode") INT, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("t35Extension") INT, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("manufacturerCode") INT, WORD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _H245_NonStandardIdentifier[] = {	/* CHOICE */
+	{FNAME("object") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("h221NonStandard") SEQ, 0, 3, 3, SKIP, 0,
+	 _H245_NonStandardIdentifier_h221NonStandard},
+};
+
+static field_t _H245_NonStandardParameter[] = {	/* SEQUENCE */
+	{FNAME("nonStandardIdentifier") CHOICE, 1, 2, 2, SKIP, 0,
+	 _H245_NonStandardIdentifier},
+	{FNAME("data") OCTSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _H261VideoCapability[] = {	/* SEQUENCE */
+	{FNAME("qcifMPI") INT, 2, 1, 0, SKIP | OPT, 0, NULL},
+	{FNAME("cifMPI") INT, 2, 1, 0, SKIP | OPT, 0, NULL},
+	{FNAME("temporalSpatialTradeOffCapability") BOOL, FIXD, 0, 0, SKIP, 0,
+	 NULL},
+	{FNAME("maxBitRate") INT, WORD, 1, 0, SKIP, 0, NULL},
+	{FNAME("stillImageTransmission") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("videoBadMBsCap") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _H262VideoCapability[] = {	/* SEQUENCE */
+	{FNAME("profileAndLevel-SPatML") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("profileAndLevel-MPatLL") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("profileAndLevel-MPatML") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("profileAndLevel-MPatH-14") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("profileAndLevel-MPatHL") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("profileAndLevel-SNRatLL") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("profileAndLevel-SNRatML") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("profileAndLevel-SpatialatH-14") BOOL, FIXD, 0, 0, SKIP, 0,
+	 NULL},
+	{FNAME("profileAndLevel-HPatML") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("profileAndLevel-HPatH-14") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("profileAndLevel-HPatHL") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("videoBitRate") INT, CONS, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("vbvBufferSize") INT, CONS, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("samplesPerLine") INT, WORD, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("linesPerFrame") INT, WORD, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("framesPerSecond") INT, 4, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("luminanceSampleRate") INT, CONS, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("videoBadMBsCap") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _H263VideoCapability[] = {	/* SEQUENCE */
+	{FNAME("sqcifMPI") INT, 5, 1, 0, SKIP | OPT, 0, NULL},
+	{FNAME("qcifMPI") INT, 5, 1, 0, SKIP | OPT, 0, NULL},
+	{FNAME("cifMPI") INT, 5, 1, 0, SKIP | OPT, 0, NULL},
+	{FNAME("cif4MPI") INT, 5, 1, 0, SKIP | OPT, 0, NULL},
+	{FNAME("cif16MPI") INT, 5, 1, 0, SKIP | OPT, 0, NULL},
+	{FNAME("maxBitRate") INT, CONS, 1, 0, SKIP, 0, NULL},
+	{FNAME("unrestrictedVector") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("arithmeticCoding") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("advancedPrediction") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("pbFrames") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("temporalSpatialTradeOffCapability") BOOL, FIXD, 0, 0, SKIP, 0,
+	 NULL},
+	{FNAME("hrd-B") INT, CONS, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("bppMaxKb") INT, WORD, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("slowSqcifMPI") INT, WORD, 1, 0, SKIP | OPT, 0, NULL},
+	{FNAME("slowQcifMPI") INT, WORD, 1, 0, SKIP | OPT, 0, NULL},
+	{FNAME("slowCifMPI") INT, WORD, 1, 0, SKIP | OPT, 0, NULL},
+	{FNAME("slowCif4MPI") INT, WORD, 1, 0, SKIP | OPT, 0, NULL},
+	{FNAME("slowCif16MPI") INT, WORD, 1, 0, SKIP | OPT, 0, NULL},
+	{FNAME("errorCompensation") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("enhancementLayerInfo") SEQ, 3, 4, 4, SKIP | EXT | OPT, 0,
+	 NULL},
+	{FNAME("h263Options") SEQ, 5, 29, 31, SKIP | EXT | OPT, 0, NULL},
+};
+
+static field_t _IS11172VideoCapability[] = {	/* SEQUENCE */
+	{FNAME("constrainedBitstream") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("videoBitRate") INT, CONS, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("vbvBufferSize") INT, CONS, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("samplesPerLine") INT, WORD, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("linesPerFrame") INT, WORD, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("pictureRate") INT, 4, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("luminanceSampleRate") INT, CONS, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("videoBadMBsCap") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _VideoCapability[] = {	/* CHOICE */
+	{FNAME("nonStandard") SEQ, 0, 2, 2, SKIP, 0,
+	 _H245_NonStandardParameter},
+	{FNAME("h261VideoCapability") SEQ, 2, 5, 6, SKIP | EXT, 0,
+	 _H261VideoCapability},
+	{FNAME("h262VideoCapability") SEQ, 6, 17, 18, SKIP | EXT, 0,
+	 _H262VideoCapability},
+	{FNAME("h263VideoCapability") SEQ, 7, 13, 21, SKIP | EXT, 0,
+	 _H263VideoCapability},
+	{FNAME("is11172VideoCapability") SEQ, 6, 7, 8, SKIP | EXT, 0,
+	 _IS11172VideoCapability},
+	{FNAME("genericVideoCapability") SEQ, 5, 6, 6, SKIP | EXT, 0, NULL},
+};
+
+static field_t _AudioCapability_g7231[] = {	/* SEQUENCE */
+	{FNAME("maxAl-sduAudioFrames") INT, BYTE, 1, 0, SKIP, 0, NULL},
+	{FNAME("silenceSuppression") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _IS11172AudioCapability[] = {	/* SEQUENCE */
+	{FNAME("audioLayer1") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("audioLayer2") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("audioLayer3") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("audioSampling32k") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("audioSampling44k1") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("audioSampling48k") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("singleChannel") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("twoChannels") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("bitRate") INT, WORD, 1, 0, SKIP, 0, NULL},
+};
+
+static field_t _IS13818AudioCapability[] = {	/* SEQUENCE */
+	{FNAME("audioLayer1") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("audioLayer2") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("audioLayer3") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("audioSampling16k") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("audioSampling22k05") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("audioSampling24k") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("audioSampling32k") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("audioSampling44k1") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("audioSampling48k") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("singleChannel") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("twoChannels") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("threeChannels2-1") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("threeChannels3-0") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("fourChannels2-0-2-0") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("fourChannels2-2") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("fourChannels3-1") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("fiveChannels3-0-2-0") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("fiveChannels3-2") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("lowFrequencyEnhancement") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("multilingual") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("bitRate") INT, WORD, 1, 0, SKIP, 0, NULL},
+};
+
+static field_t _AudioCapability[] = {	/* CHOICE */
+	{FNAME("nonStandard") SEQ, 0, 2, 2, SKIP, 0,
+	 _H245_NonStandardParameter},
+	{FNAME("g711Alaw64k") INT, BYTE, 1, 0, SKIP, 0, NULL},
+	{FNAME("g711Alaw56k") INT, BYTE, 1, 0, SKIP, 0, NULL},
+	{FNAME("g711Ulaw64k") INT, BYTE, 1, 0, SKIP, 0, NULL},
+	{FNAME("g711Ulaw56k") INT, BYTE, 1, 0, SKIP, 0, NULL},
+	{FNAME("g722-64k") INT, BYTE, 1, 0, SKIP, 0, NULL},
+	{FNAME("g722-56k") INT, BYTE, 1, 0, SKIP, 0, NULL},
+	{FNAME("g722-48k") INT, BYTE, 1, 0, SKIP, 0, NULL},
+	{FNAME("g7231") SEQ, 0, 2, 2, SKIP, 0, _AudioCapability_g7231},
+	{FNAME("g728") INT, BYTE, 1, 0, SKIP, 0, NULL},
+	{FNAME("g729") INT, BYTE, 1, 0, SKIP, 0, NULL},
+	{FNAME("g729AnnexA") INT, BYTE, 1, 0, SKIP, 0, NULL},
+	{FNAME("is11172AudioCapability") SEQ, 0, 9, 9, SKIP | EXT, 0,
+	 _IS11172AudioCapability},
+	{FNAME("is13818AudioCapability") SEQ, 0, 21, 21, SKIP | EXT, 0,
+	 _IS13818AudioCapability},
+	{FNAME("g729wAnnexB") INT, BYTE, 1, 0, SKIP, 0, NULL},
+	{FNAME("g729AnnexAwAnnexB") INT, BYTE, 1, 0, SKIP, 0, NULL},
+	{FNAME("g7231AnnexCCapability") SEQ, 1, 3, 3, SKIP | EXT, 0, NULL},
+	{FNAME("gsmFullRate") SEQ, 0, 3, 3, SKIP | EXT, 0, NULL},
+	{FNAME("gsmHalfRate") SEQ, 0, 3, 3, SKIP | EXT, 0, NULL},
+	{FNAME("gsmEnhancedFullRate") SEQ, 0, 3, 3, SKIP | EXT, 0, NULL},
+	{FNAME("genericAudioCapability") SEQ, 5, 6, 6, SKIP | EXT, 0, NULL},
+	{FNAME("g729Extensions") SEQ, 1, 8, 8, SKIP | EXT, 0, NULL},
+};
+
+static field_t _DataProtocolCapability[] = {	/* CHOICE */
+	{FNAME("nonStandard") SEQ, 0, 2, 2, SKIP, 0,
+	 _H245_NonStandardParameter},
+	{FNAME("v14buffered") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("v42lapm") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("hdlcFrameTunnelling") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("h310SeparateVCStack") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("h310SingleVCStack") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("transparent") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("segmentationAndReassembly") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("hdlcFrameTunnelingwSAR") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("v120") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("separateLANStack") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("v76wCompression") CHOICE, 2, 3, 3, SKIP | EXT, 0, NULL},
+	{FNAME("tcp") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("udp") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _T84Profile_t84Restricted[] = {	/* SEQUENCE */
+	{FNAME("qcif") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("cif") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("ccir601Seq") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("ccir601Prog") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("hdtvSeq") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("hdtvProg") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("g3FacsMH200x100") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("g3FacsMH200x200") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("g4FacsMMR200x100") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("g4FacsMMR200x200") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("jbig200x200Seq") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("jbig200x200Prog") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("jbig300x300Seq") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("jbig300x300Prog") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("digPhotoLow") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("digPhotoMedSeq") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("digPhotoMedProg") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("digPhotoHighSeq") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("digPhotoHighProg") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _T84Profile[] = {	/* CHOICE */
+	{FNAME("t84Unrestricted") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("t84Restricted") SEQ, 0, 19, 19, SKIP | EXT, 0,
+	 _T84Profile_t84Restricted},
+};
+
+static field_t _DataApplicationCapability_application_t84[] = {	/* SEQUENCE */
+	{FNAME("t84Protocol") CHOICE, 3, 7, 14, SKIP | EXT, 0,
+	 _DataProtocolCapability},
+	{FNAME("t84Profile") CHOICE, 1, 2, 2, SKIP, 0, _T84Profile},
+};
+
+static field_t _DataApplicationCapability_application_nlpid[] = {	/* SEQUENCE */
+	{FNAME("nlpidProtocol") CHOICE, 3, 7, 14, SKIP | EXT, 0,
+	 _DataProtocolCapability},
+	{FNAME("nlpidData") OCTSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _DataApplicationCapability_application[] = {	/* CHOICE */
+	{FNAME("nonStandard") SEQ, 0, 2, 2, SKIP, 0,
+	 _H245_NonStandardParameter},
+	{FNAME("t120") CHOICE, 3, 7, 14, DECODE | EXT,
+	 offsetof(DataApplicationCapability_application, t120),
+	 _DataProtocolCapability},
+	{FNAME("dsm-cc") CHOICE, 3, 7, 14, SKIP | EXT, 0,
+	 _DataProtocolCapability},
+	{FNAME("userData") CHOICE, 3, 7, 14, SKIP | EXT, 0,
+	 _DataProtocolCapability},
+	{FNAME("t84") SEQ, 0, 2, 2, SKIP, 0,
+	 _DataApplicationCapability_application_t84},
+	{FNAME("t434") CHOICE, 3, 7, 14, SKIP | EXT, 0,
+	 _DataProtocolCapability},
+	{FNAME("h224") CHOICE, 3, 7, 14, SKIP | EXT, 0,
+	 _DataProtocolCapability},
+	{FNAME("nlpid") SEQ, 0, 2, 2, SKIP, 0,
+	 _DataApplicationCapability_application_nlpid},
+	{FNAME("dsvdControl") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("h222DataPartitioning") CHOICE, 3, 7, 14, SKIP | EXT, 0,
+	 _DataProtocolCapability},
+	{FNAME("t30fax") CHOICE, 3, 7, 14, SKIP | EXT, 0, NULL},
+	{FNAME("t140") CHOICE, 3, 7, 14, SKIP | EXT, 0, NULL},
+	{FNAME("t38fax") SEQ, 0, 2, 2, SKIP, 0, NULL},
+	{FNAME("genericDataCapability") SEQ, 5, 6, 6, SKIP | EXT, 0, NULL},
+};
+
+static field_t _DataApplicationCapability[] = {	/* SEQUENCE */
+	{FNAME("application") CHOICE, 4, 10, 14, DECODE | EXT,
+	 offsetof(DataApplicationCapability, application),
+	 _DataApplicationCapability_application},
+	{FNAME("maxBitRate") INT, CONS, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _EncryptionMode[] = {	/* CHOICE */
+	{FNAME("nonStandard") SEQ, 0, 2, 2, SKIP, 0,
+	 _H245_NonStandardParameter},
+	{FNAME("h233Encryption") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _DataType[] = {	/* CHOICE */
+	{FNAME("nonStandard") SEQ, 0, 2, 2, SKIP, 0,
+	 _H245_NonStandardParameter},
+	{FNAME("nullData") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("videoData") CHOICE, 3, 5, 6, SKIP | EXT, 0, _VideoCapability},
+	{FNAME("audioData") CHOICE, 4, 14, 22, SKIP | EXT, 0,
+	 _AudioCapability},
+	{FNAME("data") SEQ, 0, 2, 2, DECODE | EXT, offsetof(DataType, data),
+	 _DataApplicationCapability},
+	{FNAME("encryptionData") CHOICE, 1, 2, 2, SKIP | EXT, 0,
+	 _EncryptionMode},
+	{FNAME("h235Control") SEQ, 0, 2, 2, SKIP, 0, NULL},
+	{FNAME("h235Media") SEQ, 0, 2, 2, SKIP | EXT, 0, NULL},
+	{FNAME("multiplexedStream") SEQ, 0, 2, 2, SKIP | EXT, 0, NULL},
+};
+
+static field_t _H222LogicalChannelParameters[] = {	/* SEQUENCE */
+	{FNAME("resourceID") INT, WORD, 0, 0, SKIP, 0, NULL},
+	{FNAME("subChannelID") INT, WORD, 0, 0, SKIP, 0, NULL},
+	{FNAME("pcr-pid") INT, WORD, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("programDescriptors") OCTSTR, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("streamDescriptors") OCTSTR, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+};
+
+static field_t _H223LogicalChannelParameters_adaptationLayerType_al3[] = {	/* SEQUENCE */
+	{FNAME("controlFieldOctets") INT, 2, 0, 0, SKIP, 0, NULL},
+	{FNAME("sendBufferSize") INT, CONS, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _H223LogicalChannelParameters_adaptationLayerType[] = {	/* CHOICE */
+	{FNAME("nonStandard") SEQ, 0, 2, 2, SKIP, 0,
+	 _H245_NonStandardParameter},
+	{FNAME("al1Framed") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("al1NotFramed") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("al2WithoutSequenceNumbers") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("al2WithSequenceNumbers") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("al3") SEQ, 0, 2, 2, SKIP, 0,
+	 _H223LogicalChannelParameters_adaptationLayerType_al3},
+	{FNAME("al1M") SEQ, 0, 7, 8, SKIP | EXT, 0, NULL},
+	{FNAME("al2M") SEQ, 0, 2, 2, SKIP | EXT, 0, NULL},
+	{FNAME("al3M") SEQ, 0, 5, 6, SKIP | EXT, 0, NULL},
+};
+
+static field_t _H223LogicalChannelParameters[] = {	/* SEQUENCE */
+	{FNAME("adaptationLayerType") CHOICE, 3, 6, 9, SKIP | EXT, 0,
+	 _H223LogicalChannelParameters_adaptationLayerType},
+	{FNAME("segmentableFlag") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _CRCLength[] = {	/* CHOICE */
+	{FNAME("crc8bit") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("crc16bit") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("crc32bit") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _V76HDLCParameters[] = {	/* SEQUENCE */
+	{FNAME("crcLength") CHOICE, 2, 3, 3, SKIP | EXT, 0, _CRCLength},
+	{FNAME("n401") INT, WORD, 1, 0, SKIP, 0, NULL},
+	{FNAME("loopbackTestProcedure") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _V76LogicalChannelParameters_suspendResume[] = {	/* CHOICE */
+	{FNAME("noSuspendResume") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("suspendResumewAddress") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("suspendResumewoAddress") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _V76LogicalChannelParameters_mode_eRM_recovery[] = {	/* CHOICE */
+	{FNAME("rej") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("sREJ") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("mSREJ") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _V76LogicalChannelParameters_mode_eRM[] = {	/* SEQUENCE */
+	{FNAME("windowSize") INT, 7, 1, 0, SKIP, 0, NULL},
+	{FNAME("recovery") CHOICE, 2, 3, 3, SKIP | EXT, 0,
+	 _V76LogicalChannelParameters_mode_eRM_recovery},
+};
+
+static field_t _V76LogicalChannelParameters_mode[] = {	/* CHOICE */
+	{FNAME("eRM") SEQ, 0, 2, 2, SKIP | EXT, 0,
+	 _V76LogicalChannelParameters_mode_eRM},
+	{FNAME("uNERM") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _V75Parameters[] = {	/* SEQUENCE */
+	{FNAME("audioHeaderPresent") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _V76LogicalChannelParameters[] = {	/* SEQUENCE */
+	{FNAME("hdlcParameters") SEQ, 0, 3, 3, SKIP | EXT, 0,
+	 _V76HDLCParameters},
+	{FNAME("suspendResume") CHOICE, 2, 3, 3, SKIP | EXT, 0,
+	 _V76LogicalChannelParameters_suspendResume},
+	{FNAME("uIH") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("mode") CHOICE, 1, 2, 2, SKIP | EXT, 0,
+	 _V76LogicalChannelParameters_mode},
+	{FNAME("v75Parameters") SEQ, 0, 1, 1, SKIP | EXT, 0, _V75Parameters},
+};
+
+static field_t _H2250LogicalChannelParameters_nonStandard[] = {	/* SEQUENCE OF */
+	{FNAME("item") SEQ, 0, 2, 2, SKIP, 0, _H245_NonStandardParameter},
+};
+
+static field_t _UnicastAddress_iPAddress[] = {	/* SEQUENCE */
+	{FNAME("network") OCTSTR, FIXD, 4, 0, DECODE,
+	 offsetof(UnicastAddress_iPAddress, network), NULL},
+	{FNAME("tsapIdentifier") INT, WORD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _UnicastAddress_iPXAddress[] = {	/* SEQUENCE */
+	{FNAME("node") OCTSTR, FIXD, 6, 0, SKIP, 0, NULL},
+	{FNAME("netnum") OCTSTR, FIXD, 4, 0, SKIP, 0, NULL},
+	{FNAME("tsapIdentifier") OCTSTR, FIXD, 2, 0, SKIP, 0, NULL},
+};
+
+static field_t _UnicastAddress_iP6Address[] = {	/* SEQUENCE */
+	{FNAME("network") OCTSTR, FIXD, 16, 0, SKIP, 0, NULL},
+	{FNAME("tsapIdentifier") INT, WORD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _UnicastAddress_iPSourceRouteAddress_routing[] = {	/* CHOICE */
+	{FNAME("strict") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("loose") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _UnicastAddress_iPSourceRouteAddress_route[] = {	/* SEQUENCE OF */
+	{FNAME("item") OCTSTR, FIXD, 4, 0, SKIP, 0, NULL},
+};
+
+static field_t _UnicastAddress_iPSourceRouteAddress[] = {	/* SEQUENCE */
+	{FNAME("routing") CHOICE, 1, 2, 2, SKIP, 0,
+	 _UnicastAddress_iPSourceRouteAddress_routing},
+	{FNAME("network") OCTSTR, FIXD, 4, 0, SKIP, 0, NULL},
+	{FNAME("tsapIdentifier") INT, WORD, 0, 0, SKIP, 0, NULL},
+	{FNAME("route") SEQOF, SEMI, 0, 0, SKIP, 0,
+	 _UnicastAddress_iPSourceRouteAddress_route},
+};
+
+static field_t _UnicastAddress[] = {	/* CHOICE */
+	{FNAME("iPAddress") SEQ, 0, 2, 2, DECODE | EXT,
+	 offsetof(UnicastAddress, iPAddress), _UnicastAddress_iPAddress},
+	{FNAME("iPXAddress") SEQ, 0, 3, 3, SKIP | EXT, 0,
+	 _UnicastAddress_iPXAddress},
+	{FNAME("iP6Address") SEQ, 0, 2, 2, SKIP | EXT, 0,
+	 _UnicastAddress_iP6Address},
+	{FNAME("netBios") OCTSTR, FIXD, 16, 0, SKIP, 0, NULL},
+	{FNAME("iPSourceRouteAddress") SEQ, 0, 4, 4, SKIP | EXT, 0,
+	 _UnicastAddress_iPSourceRouteAddress},
+	{FNAME("nsap") OCTSTR, 5, 1, 0, SKIP, 0, NULL},
+	{FNAME("nonStandardAddress") SEQ, 0, 2, 2, SKIP, 0, NULL},
+};
+
+static field_t _MulticastAddress_iPAddress[] = {	/* SEQUENCE */
+	{FNAME("network") OCTSTR, FIXD, 4, 0, SKIP, 0, NULL},
+	{FNAME("tsapIdentifier") INT, WORD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _MulticastAddress_iP6Address[] = {	/* SEQUENCE */
+	{FNAME("network") OCTSTR, FIXD, 16, 0, SKIP, 0, NULL},
+	{FNAME("tsapIdentifier") INT, WORD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _MulticastAddress[] = {	/* CHOICE */
+	{FNAME("iPAddress") SEQ, 0, 2, 2, SKIP | EXT, 0,
+	 _MulticastAddress_iPAddress},
+	{FNAME("iP6Address") SEQ, 0, 2, 2, SKIP | EXT, 0,
+	 _MulticastAddress_iP6Address},
+	{FNAME("nsap") OCTSTR, 5, 1, 0, SKIP, 0, NULL},
+	{FNAME("nonStandardAddress") SEQ, 0, 2, 2, SKIP, 0, NULL},
+};
+
+static field_t _H245_TransportAddress[] = {	/* CHOICE */
+	{FNAME("unicastAddress") CHOICE, 3, 5, 7, DECODE | EXT,
+	 offsetof(H245_TransportAddress, unicastAddress), _UnicastAddress},
+	{FNAME("multicastAddress") CHOICE, 1, 2, 4, SKIP | EXT, 0,
+	 _MulticastAddress},
+};
+
+static field_t _H2250LogicalChannelParameters[] = {	/* SEQUENCE */
+	{FNAME("nonStandard") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+	 _H2250LogicalChannelParameters_nonStandard},
+	{FNAME("sessionID") INT, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("associatedSessionID") INT, 8, 1, 0, SKIP | OPT, 0, NULL},
+	{FNAME("mediaChannel") CHOICE, 1, 2, 2, DECODE | EXT | OPT,
+	 offsetof(H2250LogicalChannelParameters, mediaChannel),
+	 _H245_TransportAddress},
+	{FNAME("mediaGuaranteedDelivery") BOOL, FIXD, 0, 0, SKIP | OPT, 0,
+	 NULL},
+	{FNAME("mediaControlChannel") CHOICE, 1, 2, 2, DECODE | EXT | OPT,
+	 offsetof(H2250LogicalChannelParameters, mediaControlChannel),
+	 _H245_TransportAddress},
+	{FNAME("mediaControlGuaranteedDelivery") BOOL, FIXD, 0, 0, STOP | OPT,
+	 0, NULL},
+	{FNAME("silenceSuppression") BOOL, FIXD, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("destination") SEQ, 0, 2, 2, STOP | EXT | OPT, 0, NULL},
+	{FNAME("dynamicRTPPayloadType") INT, 5, 96, 0, STOP | OPT, 0, NULL},
+	{FNAME("mediaPacketization") CHOICE, 0, 1, 2, STOP | EXT | OPT, 0,
+	 NULL},
+	{FNAME("transportCapability") SEQ, 3, 3, 3, STOP | EXT | OPT, 0,
+	 NULL},
+	{FNAME("redundancyEncoding") SEQ, 1, 2, 2, STOP | EXT | OPT, 0, NULL},
+	{FNAME("source") SEQ, 0, 2, 2, SKIP | EXT | OPT, 0, NULL},
+};
+
+static field_t _OpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters[] = {	/* CHOICE */
+	{FNAME("h222LogicalChannelParameters") SEQ, 3, 5, 5, SKIP | EXT, 0,
+	 _H222LogicalChannelParameters},
+	{FNAME("h223LogicalChannelParameters") SEQ, 0, 2, 2, SKIP | EXT, 0,
+	 _H223LogicalChannelParameters},
+	{FNAME("v76LogicalChannelParameters") SEQ, 0, 5, 5, SKIP | EXT, 0,
+	 _V76LogicalChannelParameters},
+	{FNAME("h2250LogicalChannelParameters") SEQ, 10, 11, 14, DECODE | EXT,
+	 offsetof
+	 (OpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters,
+	  h2250LogicalChannelParameters), _H2250LogicalChannelParameters},
+	{FNAME("none") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _OpenLogicalChannel_forwardLogicalChannelParameters[] = {	/* SEQUENCE */
+	{FNAME("portNumber") INT, WORD, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("dataType") CHOICE, 3, 6, 9, DECODE | EXT,
+	 offsetof(OpenLogicalChannel_forwardLogicalChannelParameters,
+		  dataType), _DataType},
+	{FNAME("multiplexParameters") CHOICE, 2, 3, 5, DECODE | EXT,
+	 offsetof(OpenLogicalChannel_forwardLogicalChannelParameters,
+		  multiplexParameters),
+	 _OpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters},
+	{FNAME("forwardLogicalChannelDependency") INT, WORD, 1, 0, SKIP | OPT,
+	 0, NULL},
+	{FNAME("replacementFor") INT, WORD, 1, 0, SKIP | OPT, 0, NULL},
+};
+
+static field_t _OpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters[] = {	/* CHOICE */
+	{FNAME("h223LogicalChannelParameters") SEQ, 0, 2, 2, SKIP | EXT, 0,
+	 _H223LogicalChannelParameters},
+	{FNAME("v76LogicalChannelParameters") SEQ, 0, 5, 5, SKIP | EXT, 0,
+	 _V76LogicalChannelParameters},
+	{FNAME("h2250LogicalChannelParameters") SEQ, 10, 11, 14, DECODE | EXT,
+	 offsetof
+	 (OpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters,
+	  h2250LogicalChannelParameters), _H2250LogicalChannelParameters},
+};
+
+static field_t _OpenLogicalChannel_reverseLogicalChannelParameters[] = {	/* SEQUENCE */
+	{FNAME("dataType") CHOICE, 3, 6, 9, SKIP | EXT, 0, _DataType},
+	{FNAME("multiplexParameters") CHOICE, 1, 2, 3, DECODE | EXT | OPT,
+	 offsetof(OpenLogicalChannel_reverseLogicalChannelParameters,
+		  multiplexParameters),
+	 _OpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters},
+	{FNAME("reverseLogicalChannelDependency") INT, WORD, 1, 0, SKIP | OPT,
+	 0, NULL},
+	{FNAME("replacementFor") INT, WORD, 1, 0, SKIP | OPT, 0, NULL},
+};
+
+static field_t _NetworkAccessParameters_distribution[] = {	/* CHOICE */
+	{FNAME("unicast") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("multicast") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _Q2931Address_address[] = {	/* CHOICE */
+	{FNAME("internationalNumber") NUMSTR, 4, 1, 0, SKIP, 0, NULL},
+	{FNAME("nsapAddress") OCTSTR, 5, 1, 0, SKIP, 0, NULL},
+};
+
+static field_t _Q2931Address[] = {	/* SEQUENCE */
+	{FNAME("address") CHOICE, 1, 2, 2, SKIP | EXT, 0,
+	 _Q2931Address_address},
+	{FNAME("subaddress") OCTSTR, 5, 1, 0, SKIP | OPT, 0, NULL},
+};
+
+static field_t _NetworkAccessParameters_networkAddress[] = {	/* CHOICE */
+	{FNAME("q2931Address") SEQ, 1, 2, 2, SKIP | EXT, 0, _Q2931Address},
+	{FNAME("e164Address") NUMDGT, 7, 1, 0, SKIP, 0, NULL},
+	{FNAME("localAreaAddress") CHOICE, 1, 2, 2, DECODE | EXT,
+	 offsetof(NetworkAccessParameters_networkAddress, localAreaAddress),
+	 _H245_TransportAddress},
+};
+
+static field_t _NetworkAccessParameters[] = {	/* SEQUENCE */
+	{FNAME("distribution") CHOICE, 1, 2, 2, SKIP | EXT | OPT, 0,
+	 _NetworkAccessParameters_distribution},
+	{FNAME("networkAddress") CHOICE, 2, 3, 3, DECODE | EXT,
+	 offsetof(NetworkAccessParameters, networkAddress),
+	 _NetworkAccessParameters_networkAddress},
+	{FNAME("associateConference") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("externalReference") OCTSTR, 8, 1, 0, SKIP | OPT, 0, NULL},
+	{FNAME("t120SetupProcedure") CHOICE, 2, 3, 3, SKIP | EXT | OPT, 0,
+	 NULL},
+};
+
+static field_t _OpenLogicalChannel[] = {	/* SEQUENCE */
+	{FNAME("forwardLogicalChannelNumber") INT, WORD, 1, 0, SKIP, 0, NULL},
+	{FNAME("forwardLogicalChannelParameters") SEQ, 1, 3, 5, DECODE | EXT,
+	 offsetof(OpenLogicalChannel, forwardLogicalChannelParameters),
+	 _OpenLogicalChannel_forwardLogicalChannelParameters},
+	{FNAME("reverseLogicalChannelParameters") SEQ, 1, 2, 4,
+	 DECODE | EXT | OPT, offsetof(OpenLogicalChannel,
+				      reverseLogicalChannelParameters),
+	 _OpenLogicalChannel_reverseLogicalChannelParameters},
+	{FNAME("separateStack") SEQ, 2, 4, 5, DECODE | EXT | OPT,
+	 offsetof(OpenLogicalChannel, separateStack),
+	 _NetworkAccessParameters},
+	{FNAME("encryptionSync") SEQ, 2, 4, 4, STOP | EXT | OPT, 0, NULL},
+};
+
+static field_t _Setup_UUIE_fastStart[] = {	/* SEQUENCE OF */
+	{FNAME("item") SEQ, 1, 3, 5, DECODE | OPEN | EXT,
+	 sizeof(OpenLogicalChannel), _OpenLogicalChannel}
+	,
+};
+
+static field_t _Setup_UUIE[] = {	/* SEQUENCE */
+	{FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("h245Address") CHOICE, 3, 7, 7, DECODE | EXT | OPT,
+	 offsetof(Setup_UUIE, h245Address), _TransportAddress},
+	{FNAME("sourceAddress") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+	 _Setup_UUIE_sourceAddress},
+	{FNAME("sourceInfo") SEQ, 6, 8, 10, SKIP | EXT, 0, _EndpointType},
+	{FNAME("destinationAddress") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+	 _Setup_UUIE_destinationAddress},
+	{FNAME("destCallSignalAddress") CHOICE, 3, 7, 7, DECODE | EXT | OPT,
+	 offsetof(Setup_UUIE, destCallSignalAddress), _TransportAddress},
+	{FNAME("destExtraCallInfo") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+	 _Setup_UUIE_destExtraCallInfo},
+	{FNAME("destExtraCRV") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+	 _Setup_UUIE_destExtraCRV},
+	{FNAME("activeMC") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("conferenceID") OCTSTR, FIXD, 16, 0, SKIP, 0, NULL},
+	{FNAME("conferenceGoal") CHOICE, 2, 3, 5, SKIP | EXT, 0,
+	 _Setup_UUIE_conferenceGoal},
+	{FNAME("callServices") SEQ, 0, 8, 8, SKIP | EXT | OPT, 0,
+	 _QseriesOptions},
+	{FNAME("callType") CHOICE, 2, 4, 4, SKIP | EXT, 0, _CallType},
+	{FNAME("sourceCallSignalAddress") CHOICE, 3, 7, 7, DECODE | EXT | OPT,
+	 offsetof(Setup_UUIE, sourceCallSignalAddress), _TransportAddress},
+	{FNAME("remoteExtensionAddress") CHOICE, 1, 2, 7, SKIP | EXT | OPT, 0,
+	 NULL},
+	{FNAME("callIdentifier") SEQ, 0, 1, 1, SKIP | EXT, 0, NULL},
+	{FNAME("h245SecurityCapability") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+	 NULL},
+	{FNAME("tokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("fastStart") SEQOF, SEMI, 0, 30, DECODE | OPT,
+	 offsetof(Setup_UUIE, fastStart), _Setup_UUIE_fastStart},
+	{FNAME("mediaWaitForConnect") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("canOverlapSend") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("endpointIdentifier") BMPSTR, 7, 1, 0, STOP | OPT, 0, NULL},
+	{FNAME("multipleCalls") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("maintainConnection") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("connectionParameters") SEQ, 0, 3, 3, SKIP | EXT | OPT, 0,
+	 NULL},
+	{FNAME("language") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("presentationIndicator") CHOICE, 2, 3, 3, SKIP | EXT | OPT, 0,
+	 NULL},
+	{FNAME("screeningIndicator") ENUM, 2, 0, 0, SKIP | EXT | OPT, 0,
+	 NULL},
+	{FNAME("serviceControl") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("symmetricOperationRequired") NUL, FIXD, 0, 0, SKIP | OPT, 0,
+	 NULL},
+	{FNAME("capacity") SEQ, 2, 2, 2, SKIP | EXT | OPT, 0, NULL},
+	{FNAME("circuitInfo") SEQ, 3, 3, 3, SKIP | EXT | OPT, 0, NULL},
+	{FNAME("desiredProtocols") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("neededFeatures") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("desiredFeatures") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("supportedFeatures") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("parallelH245Control") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("additionalSourceAddresses") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+	 NULL},
+};
+
+static field_t _CallProceeding_UUIE_fastStart[] = {	/* SEQUENCE OF */
+	{FNAME("item") SEQ, 1, 3, 5, DECODE | OPEN | EXT,
+	 sizeof(OpenLogicalChannel), _OpenLogicalChannel}
+	,
+};
+
+static field_t _CallProceeding_UUIE[] = {	/* SEQUENCE */
+	{FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("destinationInfo") SEQ, 6, 8, 10, SKIP | EXT, 0,
+	 _EndpointType},
+	{FNAME("h245Address") CHOICE, 3, 7, 7, DECODE | EXT | OPT,
+	 offsetof(CallProceeding_UUIE, h245Address), _TransportAddress},
+	{FNAME("callIdentifier") SEQ, 0, 1, 1, SKIP | EXT, 0, NULL},
+	{FNAME("h245SecurityMode") CHOICE, 2, 4, 4, SKIP | EXT | OPT, 0,
+	 NULL},
+	{FNAME("tokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("fastStart") SEQOF, SEMI, 0, 30, DECODE | OPT,
+	 offsetof(CallProceeding_UUIE, fastStart),
+	 _CallProceeding_UUIE_fastStart},
+	{FNAME("multipleCalls") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("maintainConnection") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("fastConnectRefused") NUL, FIXD, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("featureSet") SEQ, 3, 4, 4, SKIP | EXT | OPT, 0, NULL},
+};
+
+static field_t _Connect_UUIE_fastStart[] = {	/* SEQUENCE OF */
+	{FNAME("item") SEQ, 1, 3, 5, DECODE | OPEN | EXT,
+	 sizeof(OpenLogicalChannel), _OpenLogicalChannel}
+	,
+};
+
+static field_t _Connect_UUIE[] = {	/* SEQUENCE */
+	{FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("h245Address") CHOICE, 3, 7, 7, DECODE | EXT | OPT,
+	 offsetof(Connect_UUIE, h245Address), _TransportAddress},
+	{FNAME("destinationInfo") SEQ, 6, 8, 10, SKIP | EXT, 0,
+	 _EndpointType},
+	{FNAME("conferenceID") OCTSTR, FIXD, 16, 0, SKIP, 0, NULL},
+	{FNAME("callIdentifier") SEQ, 0, 1, 1, SKIP | EXT, 0, NULL},
+	{FNAME("h245SecurityMode") CHOICE, 2, 4, 4, SKIP | EXT | OPT, 0,
+	 NULL},
+	{FNAME("tokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("fastStart") SEQOF, SEMI, 0, 30, DECODE | OPT,
+	 offsetof(Connect_UUIE, fastStart), _Connect_UUIE_fastStart},
+	{FNAME("multipleCalls") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("maintainConnection") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("language") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("connectedAddress") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("presentationIndicator") CHOICE, 2, 3, 3, SKIP | EXT | OPT, 0,
+	 NULL},
+	{FNAME("screeningIndicator") ENUM, 2, 0, 0, SKIP | EXT | OPT, 0,
+	 NULL},
+	{FNAME("fastConnectRefused") NUL, FIXD, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("serviceControl") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("capacity") SEQ, 2, 2, 2, SKIP | EXT | OPT, 0, NULL},
+	{FNAME("featureSet") SEQ, 3, 4, 4, SKIP | EXT | OPT, 0, NULL},
+};
+
+static field_t _Alerting_UUIE_fastStart[] = {	/* SEQUENCE OF */
+	{FNAME("item") SEQ, 1, 3, 5, DECODE | OPEN | EXT,
+	 sizeof(OpenLogicalChannel), _OpenLogicalChannel}
+	,
+};
+
+static field_t _Alerting_UUIE[] = {	/* SEQUENCE */
+	{FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("destinationInfo") SEQ, 6, 8, 10, SKIP | EXT, 0,
+	 _EndpointType},
+	{FNAME("h245Address") CHOICE, 3, 7, 7, DECODE | EXT | OPT,
+	 offsetof(Alerting_UUIE, h245Address), _TransportAddress},
+	{FNAME("callIdentifier") SEQ, 0, 1, 1, SKIP | EXT, 0, NULL},
+	{FNAME("h245SecurityMode") CHOICE, 2, 4, 4, SKIP | EXT | OPT, 0,
+	 NULL},
+	{FNAME("tokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("fastStart") SEQOF, SEMI, 0, 30, DECODE | OPT,
+	 offsetof(Alerting_UUIE, fastStart), _Alerting_UUIE_fastStart},
+	{FNAME("multipleCalls") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("maintainConnection") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("alertingAddress") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("presentationIndicator") CHOICE, 2, 3, 3, SKIP | EXT | OPT, 0,
+	 NULL},
+	{FNAME("screeningIndicator") ENUM, 2, 0, 0, SKIP | EXT | OPT, 0,
+	 NULL},
+	{FNAME("fastConnectRefused") NUL, FIXD, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("serviceControl") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("capacity") SEQ, 2, 2, 2, SKIP | EXT | OPT, 0, NULL},
+	{FNAME("featureSet") SEQ, 3, 4, 4, SKIP | EXT | OPT, 0, NULL},
+};
+
+static field_t _Information_UUIE_fastStart[] = {	/* SEQUENCE OF */
+	{FNAME("item") SEQ, 1, 3, 5, DECODE | OPEN | EXT,
+	 sizeof(OpenLogicalChannel), _OpenLogicalChannel}
+	,
+};
+
+static field_t _Information_UUIE[] = {	/* SEQUENCE */
+	{FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("callIdentifier") SEQ, 0, 1, 1, SKIP | EXT, 0, NULL},
+	{FNAME("tokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("fastStart") SEQOF, SEMI, 0, 30, DECODE | OPT,
+	 offsetof(Information_UUIE, fastStart), _Information_UUIE_fastStart},
+	{FNAME("fastConnectRefused") NUL, FIXD, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("circuitInfo") SEQ, 3, 3, 3, SKIP | EXT | OPT, 0, NULL},
+};
+
+static field_t _ReleaseCompleteReason[] = {	/* CHOICE */
+	{FNAME("noBandwidth") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("gatekeeperResources") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("unreachableDestination") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("destinationRejection") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("invalidRevision") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("noPermission") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("unreachableGatekeeper") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("gatewayResources") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("badFormatAddress") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("adaptiveBusy") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("inConf") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("undefinedReason") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("facilityCallDeflection") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("securityDenied") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("calledPartyNotRegistered") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("callerNotRegistered") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("newConnectionNeeded") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("nonStandardReason") SEQ, 0, 2, 2, SKIP, 0, NULL},
+	{FNAME("replaceWithConferenceInvite") OCTSTR, FIXD, 16, 0, SKIP, 0,
+	 NULL},
+	{FNAME("genericDataReason") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("neededFeatureNotSupported") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("tunnelledSignallingRejected") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _ReleaseComplete_UUIE[] = {	/* SEQUENCE */
+	{FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("reason") CHOICE, 4, 12, 22, SKIP | EXT | OPT, 0,
+	 _ReleaseCompleteReason},
+	{FNAME("callIdentifier") SEQ, 0, 1, 1, SKIP | EXT, 0, NULL},
+	{FNAME("tokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("busyAddress") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("presentationIndicator") CHOICE, 2, 3, 3, SKIP | EXT | OPT, 0,
+	 NULL},
+	{FNAME("screeningIndicator") ENUM, 2, 0, 0, SKIP | EXT | OPT, 0,
+	 NULL},
+	{FNAME("capacity") SEQ, 2, 2, 2, SKIP | EXT | OPT, 0, NULL},
+	{FNAME("serviceControl") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("featureSet") SEQ, 3, 4, 4, SKIP | EXT | OPT, 0, NULL},
+};
+
+static field_t _Facility_UUIE_alternativeAliasAddress[] = {	/* SEQUENCE OF */
+	{FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
+};
+
+static field_t _FacilityReason[] = {	/* CHOICE */
+	{FNAME("routeCallToGatekeeper") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("callForwarded") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("routeCallToMC") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("undefinedReason") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("conferenceListChoice") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("startH245") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("noH245") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("newTokens") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("featureSetUpdate") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("forwardedElements") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("transportedInformation") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _Facility_UUIE_fastStart[] = {	/* SEQUENCE OF */
+	{FNAME("item") SEQ, 1, 3, 5, DECODE | OPEN | EXT,
+	 sizeof(OpenLogicalChannel), _OpenLogicalChannel}
+	,
+};
+
+static field_t _Facility_UUIE[] = {	/* SEQUENCE */
+	{FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("alternativeAddress") CHOICE, 3, 7, 7, SKIP | EXT | OPT, 0,
+	 _TransportAddress},
+	{FNAME("alternativeAliasAddress") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+	 _Facility_UUIE_alternativeAliasAddress},
+	{FNAME("conferenceID") OCTSTR, FIXD, 16, 0, SKIP | OPT, 0, NULL},
+	{FNAME("reason") CHOICE, 2, 4, 11, DECODE | EXT,
+	 offsetof(Facility_UUIE, reason), _FacilityReason},
+	{FNAME("callIdentifier") SEQ, 0, 1, 1, SKIP | EXT, 0, NULL},
+	{FNAME("destExtraCallInfo") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("remoteExtensionAddress") CHOICE, 1, 2, 7, SKIP | EXT | OPT, 0,
+	 NULL},
+	{FNAME("tokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("conferences") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("h245Address") CHOICE, 3, 7, 7, DECODE | EXT | OPT,
+	 offsetof(Facility_UUIE, h245Address), _TransportAddress},
+	{FNAME("fastStart") SEQOF, SEMI, 0, 30, DECODE | OPT,
+	 offsetof(Facility_UUIE, fastStart), _Facility_UUIE_fastStart},
+	{FNAME("multipleCalls") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("maintainConnection") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("fastConnectRefused") NUL, FIXD, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("serviceControl") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("circuitInfo") SEQ, 3, 3, 3, SKIP | EXT | OPT, 0, NULL},
+	{FNAME("featureSet") SEQ, 3, 4, 4, SKIP | EXT | OPT, 0, NULL},
+	{FNAME("destinationInfo") SEQ, 6, 8, 10, SKIP | EXT | OPT, 0, NULL},
+	{FNAME("h245SecurityMode") CHOICE, 2, 4, 4, SKIP | EXT | OPT, 0,
+	 NULL},
+};
+
+static field_t _CallIdentifier[] = {	/* SEQUENCE */
+	{FNAME("guid") OCTSTR, FIXD, 16, 0, SKIP, 0, NULL},
+};
+
+static field_t _SecurityServiceMode[] = {	/* CHOICE */
+	{FNAME("nonStandard") SEQ, 0, 2, 2, SKIP, 0, _NonStandardParameter},
+	{FNAME("none") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("default") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _SecurityCapabilities[] = {	/* SEQUENCE */
+	{FNAME("nonStandard") SEQ, 0, 2, 2, SKIP | OPT, 0,
+	 _NonStandardParameter},
+	{FNAME("encryption") CHOICE, 2, 3, 3, SKIP | EXT, 0,
+	 _SecurityServiceMode},
+	{FNAME("authenticaton") CHOICE, 2, 3, 3, SKIP | EXT, 0,
+	 _SecurityServiceMode},
+	{FNAME("integrity") CHOICE, 2, 3, 3, SKIP | EXT, 0,
+	 _SecurityServiceMode},
+};
+
+static field_t _H245Security[] = {	/* CHOICE */
+	{FNAME("nonStandard") SEQ, 0, 2, 2, SKIP, 0, _NonStandardParameter},
+	{FNAME("noSecurity") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("tls") SEQ, 1, 4, 4, SKIP | EXT, 0, _SecurityCapabilities},
+	{FNAME("ipsec") SEQ, 1, 4, 4, SKIP | EXT, 0, _SecurityCapabilities},
+};
+
+static field_t _DHset[] = {	/* SEQUENCE */
+	{FNAME("halfkey") BITSTR, WORD, 0, 0, SKIP, 0, NULL},
+	{FNAME("modSize") BITSTR, WORD, 0, 0, SKIP, 0, NULL},
+	{FNAME("generator") BITSTR, WORD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _TypedCertificate[] = {	/* SEQUENCE */
+	{FNAME("type") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("certificate") OCTSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _H235_NonStandardParameter[] = {	/* SEQUENCE */
+	{FNAME("nonStandardIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("data") OCTSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _ClearToken[] = {	/* SEQUENCE */
+	{FNAME("tokenOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("timeStamp") INT, CONS, 1, 0, SKIP | OPT, 0, NULL},
+	{FNAME("password") BMPSTR, 7, 1, 0, SKIP | OPT, 0, NULL},
+	{FNAME("dhkey") SEQ, 0, 3, 3, SKIP | EXT | OPT, 0, _DHset},
+	{FNAME("challenge") OCTSTR, 7, 8, 0, SKIP | OPT, 0, NULL},
+	{FNAME("random") INT, UNCO, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("certificate") SEQ, 0, 2, 2, SKIP | EXT | OPT, 0,
+	 _TypedCertificate},
+	{FNAME("generalID") BMPSTR, 7, 1, 0, SKIP | OPT, 0, NULL},
+	{FNAME("nonStandard") SEQ, 0, 2, 2, SKIP | OPT, 0,
+	 _H235_NonStandardParameter},
+	{FNAME("eckasdhkey") CHOICE, 1, 2, 2, SKIP | EXT | OPT, 0, NULL},
+	{FNAME("sendersID") BMPSTR, 7, 1, 0, SKIP | OPT, 0, NULL},
+};
+
+static field_t _Progress_UUIE_tokens[] = {	/* SEQUENCE OF */
+	{FNAME("item") SEQ, 8, 9, 11, SKIP | EXT, 0, _ClearToken},
+};
+
+static field_t _Params[] = {	/* SEQUENCE */
+	{FNAME("ranInt") INT, UNCO, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("iv8") OCTSTR, FIXD, 8, 0, SKIP | OPT, 0, NULL},
+	{FNAME("iv16") OCTSTR, FIXD, 16, 0, SKIP | OPT, 0, NULL},
+};
+
+static field_t _CryptoH323Token_cryptoEPPwdHash_token[] = {	/* SEQUENCE */
+	{FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
+	{FNAME("hash") BITSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _CryptoH323Token_cryptoEPPwdHash[] = {	/* SEQUENCE */
+	{FNAME("alias") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
+	{FNAME("timeStamp") INT, CONS, 1, 0, SKIP, 0, NULL},
+	{FNAME("token") SEQ, 0, 3, 3, SKIP, 0,
+	 _CryptoH323Token_cryptoEPPwdHash_token},
+};
+
+static field_t _CryptoH323Token_cryptoGKPwdHash_token[] = {	/* SEQUENCE */
+	{FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
+	{FNAME("hash") BITSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _CryptoH323Token_cryptoGKPwdHash[] = {	/* SEQUENCE */
+	{FNAME("gatekeeperId") BMPSTR, 7, 1, 0, SKIP, 0, NULL},
+	{FNAME("timeStamp") INT, CONS, 1, 0, SKIP, 0, NULL},
+	{FNAME("token") SEQ, 0, 3, 3, SKIP, 0,
+	 _CryptoH323Token_cryptoGKPwdHash_token},
+};
+
+static field_t _CryptoH323Token_cryptoEPPwdEncr[] = {	/* SEQUENCE */
+	{FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
+	{FNAME("encryptedData") OCTSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _CryptoH323Token_cryptoGKPwdEncr[] = {	/* SEQUENCE */
+	{FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
+	{FNAME("encryptedData") OCTSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _CryptoH323Token_cryptoEPCert[] = {	/* SEQUENCE */
+	{FNAME("toBeSigned") SEQ, 8, 9, 11, SKIP | OPEN | EXT, 0, NULL},
+	{FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
+	{FNAME("signature") BITSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _CryptoH323Token_cryptoGKCert[] = {	/* SEQUENCE */
+	{FNAME("toBeSigned") SEQ, 8, 9, 11, SKIP | OPEN | EXT, 0, NULL},
+	{FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
+	{FNAME("signature") BITSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _CryptoH323Token_cryptoFastStart[] = {	/* SEQUENCE */
+	{FNAME("toBeSigned") SEQ, 8, 9, 11, SKIP | OPEN | EXT, 0, NULL},
+	{FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
+	{FNAME("signature") BITSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _CryptoToken_cryptoEncryptedToken_token[] = {	/* SEQUENCE */
+	{FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
+	{FNAME("encryptedData") OCTSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _CryptoToken_cryptoEncryptedToken[] = {	/* SEQUENCE */
+	{FNAME("tokenOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("token") SEQ, 0, 3, 3, SKIP, 0,
+	 _CryptoToken_cryptoEncryptedToken_token},
+};
+
+static field_t _CryptoToken_cryptoSignedToken_token[] = {	/* SEQUENCE */
+	{FNAME("toBeSigned") SEQ, 8, 9, 11, SKIP | OPEN | EXT, 0, NULL},
+	{FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
+	{FNAME("signature") BITSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _CryptoToken_cryptoSignedToken[] = {	/* SEQUENCE */
+	{FNAME("tokenOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("token") SEQ, 0, 4, 4, SKIP, 0,
+	 _CryptoToken_cryptoSignedToken_token},
+};
+
+static field_t _CryptoToken_cryptoHashedToken_token[] = {	/* SEQUENCE */
+	{FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
+	{FNAME("hash") BITSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _CryptoToken_cryptoHashedToken[] = {	/* SEQUENCE */
+	{FNAME("tokenOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("hashedVals") SEQ, 8, 9, 11, SKIP | EXT, 0, _ClearToken},
+	{FNAME("token") SEQ, 0, 3, 3, SKIP, 0,
+	 _CryptoToken_cryptoHashedToken_token},
+};
+
+static field_t _CryptoToken_cryptoPwdEncr[] = {	/* SEQUENCE */
+	{FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
+	{FNAME("encryptedData") OCTSTR, SEMI, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _CryptoToken[] = {	/* CHOICE */
+	{FNAME("cryptoEncryptedToken") SEQ, 0, 2, 2, SKIP, 0,
+	 _CryptoToken_cryptoEncryptedToken},
+	{FNAME("cryptoSignedToken") SEQ, 0, 2, 2, SKIP, 0,
+	 _CryptoToken_cryptoSignedToken},
+	{FNAME("cryptoHashedToken") SEQ, 0, 3, 3, SKIP, 0,
+	 _CryptoToken_cryptoHashedToken},
+	{FNAME("cryptoPwdEncr") SEQ, 0, 3, 3, SKIP, 0,
+	 _CryptoToken_cryptoPwdEncr},
+};
+
+static field_t _CryptoH323Token[] = {	/* CHOICE */
+	{FNAME("cryptoEPPwdHash") SEQ, 0, 3, 3, SKIP, 0,
+	 _CryptoH323Token_cryptoEPPwdHash},
+	{FNAME("cryptoGKPwdHash") SEQ, 0, 3, 3, SKIP, 0,
+	 _CryptoH323Token_cryptoGKPwdHash},
+	{FNAME("cryptoEPPwdEncr") SEQ, 0, 3, 3, SKIP, 0,
+	 _CryptoH323Token_cryptoEPPwdEncr},
+	{FNAME("cryptoGKPwdEncr") SEQ, 0, 3, 3, SKIP, 0,
+	 _CryptoH323Token_cryptoGKPwdEncr},
+	{FNAME("cryptoEPCert") SEQ, 0, 4, 4, SKIP, 0,
+	 _CryptoH323Token_cryptoEPCert},
+	{FNAME("cryptoGKCert") SEQ, 0, 4, 4, SKIP, 0,
+	 _CryptoH323Token_cryptoGKCert},
+	{FNAME("cryptoFastStart") SEQ, 0, 4, 4, SKIP, 0,
+	 _CryptoH323Token_cryptoFastStart},
+	{FNAME("nestedcryptoToken") CHOICE, 2, 4, 4, SKIP | EXT, 0,
+	 _CryptoToken},
+};
+
+static field_t _Progress_UUIE_cryptoTokens[] = {	/* SEQUENCE OF */
+	{FNAME("item") CHOICE, 3, 8, 8, SKIP | EXT, 0, _CryptoH323Token},
+};
+
+static field_t _Progress_UUIE_fastStart[] = {	/* SEQUENCE OF */
+	{FNAME("item") SEQ, 1, 3, 5, DECODE | OPEN | EXT,
+	 sizeof(OpenLogicalChannel), _OpenLogicalChannel}
+	,
+};
+
+static field_t _Progress_UUIE[] = {	/* SEQUENCE */
+	{FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("destinationInfo") SEQ, 6, 8, 10, SKIP | EXT, 0,
+	 _EndpointType},
+	{FNAME("h245Address") CHOICE, 3, 7, 7, DECODE | EXT | OPT,
+	 offsetof(Progress_UUIE, h245Address), _TransportAddress},
+	{FNAME("callIdentifier") SEQ, 0, 1, 1, SKIP | EXT, 0,
+	 _CallIdentifier},
+	{FNAME("h245SecurityMode") CHOICE, 2, 4, 4, SKIP | EXT | OPT, 0,
+	 _H245Security},
+	{FNAME("tokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+	 _Progress_UUIE_tokens},
+	{FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+	 _Progress_UUIE_cryptoTokens},
+	{FNAME("fastStart") SEQOF, SEMI, 0, 30, DECODE | OPT,
+	 offsetof(Progress_UUIE, fastStart), _Progress_UUIE_fastStart},
+	{FNAME("multipleCalls") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("maintainConnection") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("fastConnectRefused") NUL, FIXD, 0, 0, SKIP | OPT, 0, NULL},
+};
+
+static field_t _H323_UU_PDU_h323_message_body[] = {	/* CHOICE */
+	{FNAME("setup") SEQ, 7, 13, 39, DECODE | EXT,
+	 offsetof(H323_UU_PDU_h323_message_body, setup), _Setup_UUIE},
+	{FNAME("callProceeding") SEQ, 1, 3, 12, DECODE | EXT,
+	 offsetof(H323_UU_PDU_h323_message_body, callProceeding),
+	 _CallProceeding_UUIE},
+	{FNAME("connect") SEQ, 1, 4, 19, DECODE | EXT,
+	 offsetof(H323_UU_PDU_h323_message_body, connect), _Connect_UUIE},
+	{FNAME("alerting") SEQ, 1, 3, 17, DECODE | EXT,
+	 offsetof(H323_UU_PDU_h323_message_body, alerting), _Alerting_UUIE},
+	{FNAME("information") SEQ, 0, 1, 7, DECODE | EXT,
+	 offsetof(H323_UU_PDU_h323_message_body, information),
+	 _Information_UUIE},
+	{FNAME("releaseComplete") SEQ, 1, 2, 11, SKIP | EXT, 0,
+	 _ReleaseComplete_UUIE},
+	{FNAME("facility") SEQ, 3, 5, 21, DECODE | EXT,
+	 offsetof(H323_UU_PDU_h323_message_body, facility), _Facility_UUIE},
+	{FNAME("progress") SEQ, 5, 8, 11, DECODE | EXT,
+	 offsetof(H323_UU_PDU_h323_message_body, progress), _Progress_UUIE},
+	{FNAME("empty") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("status") SEQ, 2, 4, 4, SKIP | EXT, 0, NULL},
+	{FNAME("statusInquiry") SEQ, 2, 4, 4, SKIP | EXT, 0, NULL},
+	{FNAME("setupAcknowledge") SEQ, 2, 4, 4, SKIP | EXT, 0, NULL},
+	{FNAME("notify") SEQ, 2, 4, 4, SKIP | EXT, 0, NULL},
+};
+
+static field_t _RequestMessage[] = {	/* CHOICE */
+	{FNAME("nonStandard") SEQ, 0, 1, 1, STOP | EXT, 0, NULL},
+	{FNAME("masterSlaveDetermination") SEQ, 0, 2, 2, STOP | EXT, 0, NULL},
+	{FNAME("terminalCapabilitySet") SEQ, 3, 5, 5, STOP | EXT, 0, NULL},
+	{FNAME("openLogicalChannel") SEQ, 1, 3, 5, DECODE | EXT,
+	 offsetof(RequestMessage, openLogicalChannel), _OpenLogicalChannel},
+	{FNAME("closeLogicalChannel") SEQ, 0, 2, 3, STOP | EXT, 0, NULL},
+	{FNAME("requestChannelClose") SEQ, 0, 1, 3, STOP | EXT, 0, NULL},
+	{FNAME("multiplexEntrySend") SEQ, 0, 2, 2, STOP | EXT, 0, NULL},
+	{FNAME("requestMultiplexEntry") SEQ, 0, 1, 1, STOP | EXT, 0, NULL},
+	{FNAME("requestMode") SEQ, 0, 2, 2, STOP | EXT, 0, NULL},
+	{FNAME("roundTripDelayRequest") SEQ, 0, 1, 1, STOP | EXT, 0, NULL},
+	{FNAME("maintenanceLoopRequest") SEQ, 0, 1, 1, STOP | EXT, 0, NULL},
+	{FNAME("communicationModeRequest") SEQ, 0, 0, 0, STOP | EXT, 0, NULL},
+	{FNAME("conferenceRequest") CHOICE, 3, 8, 16, STOP | EXT, 0, NULL},
+	{FNAME("multilinkRequest") CHOICE, 3, 5, 5, STOP | EXT, 0, NULL},
+	{FNAME("logicalChannelRateRequest") SEQ, 0, 3, 3, STOP | EXT, 0,
+	 NULL},
+};
+
+static field_t _OpenLogicalChannelAck_reverseLogicalChannelParameters_multiplexParameters[] = {	/* CHOICE */
+	{FNAME("h222LogicalChannelParameters") SEQ, 3, 5, 5, SKIP | EXT, 0,
+	 _H222LogicalChannelParameters},
+	{FNAME("h2250LogicalChannelParameters") SEQ, 10, 11, 14, DECODE | EXT,
+	 offsetof
+	 (OpenLogicalChannelAck_reverseLogicalChannelParameters_multiplexParameters,
+	  h2250LogicalChannelParameters), _H2250LogicalChannelParameters},
+};
+
+static field_t _OpenLogicalChannelAck_reverseLogicalChannelParameters[] = {	/* SEQUENCE */
+	{FNAME("reverseLogicalChannelNumber") INT, WORD, 1, 0, SKIP, 0, NULL},
+	{FNAME("portNumber") INT, WORD, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("multiplexParameters") CHOICE, 0, 1, 2, DECODE | EXT | OPT,
+	 offsetof(OpenLogicalChannelAck_reverseLogicalChannelParameters,
+		  multiplexParameters),
+	 _OpenLogicalChannelAck_reverseLogicalChannelParameters_multiplexParameters},
+	{FNAME("replacementFor") INT, WORD, 1, 0, SKIP | OPT, 0, NULL},
+};
+
+static field_t _H2250LogicalChannelAckParameters_nonStandard[] = {	/* SEQUENCE OF */
+	{FNAME("item") SEQ, 0, 2, 2, SKIP, 0, _H245_NonStandardParameter},
+};
+
+static field_t _H2250LogicalChannelAckParameters[] = {	/* SEQUENCE */
+	{FNAME("nonStandard") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+	 _H2250LogicalChannelAckParameters_nonStandard},
+	{FNAME("sessionID") INT, 8, 1, 0, SKIP | OPT, 0, NULL},
+	{FNAME("mediaChannel") CHOICE, 1, 2, 2, DECODE | EXT | OPT,
+	 offsetof(H2250LogicalChannelAckParameters, mediaChannel),
+	 _H245_TransportAddress},
+	{FNAME("mediaControlChannel") CHOICE, 1, 2, 2, DECODE | EXT | OPT,
+	 offsetof(H2250LogicalChannelAckParameters, mediaControlChannel),
+	 _H245_TransportAddress},
+	{FNAME("dynamicRTPPayloadType") INT, 5, 96, 0, SKIP | OPT, 0, NULL},
+	{FNAME("flowControlToZero") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("portNumber") INT, WORD, 0, 0, SKIP | OPT, 0, NULL},
+};
+
+static field_t _OpenLogicalChannelAck_forwardMultiplexAckParameters[] = {	/* CHOICE */
+	{FNAME("h2250LogicalChannelAckParameters") SEQ, 5, 5, 7, DECODE | EXT,
+	 offsetof(OpenLogicalChannelAck_forwardMultiplexAckParameters,
+		  h2250LogicalChannelAckParameters),
+	 _H2250LogicalChannelAckParameters},
+};
+
+static field_t _OpenLogicalChannelAck[] = {	/* SEQUENCE */
+	{FNAME("forwardLogicalChannelNumber") INT, WORD, 1, 0, SKIP, 0, NULL},
+	{FNAME("reverseLogicalChannelParameters") SEQ, 2, 3, 4,
+	 DECODE | EXT | OPT, offsetof(OpenLogicalChannelAck,
+				      reverseLogicalChannelParameters),
+	 _OpenLogicalChannelAck_reverseLogicalChannelParameters},
+	{FNAME("separateStack") SEQ, 2, 4, 5, SKIP | EXT | OPT, 0, NULL},
+	{FNAME("forwardMultiplexAckParameters") CHOICE, 0, 1, 1,
+	 DECODE | EXT | OPT, offsetof(OpenLogicalChannelAck,
+				      forwardMultiplexAckParameters),
+	 _OpenLogicalChannelAck_forwardMultiplexAckParameters},
+	{FNAME("encryptionSync") SEQ, 2, 4, 4, STOP | EXT | OPT, 0, NULL},
+};
+
+static field_t _ResponseMessage[] = {	/* CHOICE */
+	{FNAME("nonStandard") SEQ, 0, 1, 1, STOP | EXT, 0, NULL},
+	{FNAME("masterSlaveDeterminationAck") SEQ, 0, 1, 1, STOP | EXT, 0,
+	 NULL},
+	{FNAME("masterSlaveDeterminationReject") SEQ, 0, 1, 1, STOP | EXT, 0,
+	 NULL},
+	{FNAME("terminalCapabilitySetAck") SEQ, 0, 1, 1, STOP | EXT, 0, NULL},
+	{FNAME("terminalCapabilitySetReject") SEQ, 0, 2, 2, STOP | EXT, 0,
+	 NULL},
+	{FNAME("openLogicalChannelAck") SEQ, 1, 2, 5, DECODE | EXT,
+	 offsetof(ResponseMessage, openLogicalChannelAck),
+	 _OpenLogicalChannelAck},
+	{FNAME("openLogicalChannelReject") SEQ, 0, 2, 2, STOP | EXT, 0, NULL},
+	{FNAME("closeLogicalChannelAck") SEQ, 0, 1, 1, STOP | EXT, 0, NULL},
+	{FNAME("requestChannelCloseAck") SEQ, 0, 1, 1, STOP | EXT, 0, NULL},
+	{FNAME("requestChannelCloseReject") SEQ, 0, 2, 2, STOP | EXT, 0,
+	 NULL},
+	{FNAME("multiplexEntrySendAck") SEQ, 0, 2, 2, STOP | EXT, 0, NULL},
+	{FNAME("multiplexEntrySendReject") SEQ, 0, 2, 2, STOP | EXT, 0, NULL},
+	{FNAME("requestMultiplexEntryAck") SEQ, 0, 1, 1, STOP | EXT, 0, NULL},
+	{FNAME("requestMultiplexEntryReject") SEQ, 0, 2, 2, STOP | EXT, 0,
+	 NULL},
+	{FNAME("requestModeAck") SEQ, 0, 2, 2, STOP | EXT, 0, NULL},
+	{FNAME("requestModeReject") SEQ, 0, 2, 2, STOP | EXT, 0, NULL},
+	{FNAME("roundTripDelayResponse") SEQ, 0, 1, 1, STOP | EXT, 0, NULL},
+	{FNAME("maintenanceLoopAck") SEQ, 0, 1, 1, STOP | EXT, 0, NULL},
+	{FNAME("maintenanceLoopReject") SEQ, 0, 2, 2, STOP | EXT, 0, NULL},
+	{FNAME("communicationModeResponse") CHOICE, 0, 1, 1, STOP | EXT, 0,
+	 NULL},
+	{FNAME("conferenceResponse") CHOICE, 3, 8, 16, STOP | EXT, 0, NULL},
+	{FNAME("multilinkResponse") CHOICE, 3, 5, 5, STOP | EXT, 0, NULL},
+	{FNAME("logicalChannelRateAcknowledge") SEQ, 0, 3, 3, STOP | EXT, 0,
+	 NULL},
+	{FNAME("logicalChannelRateReject") SEQ, 1, 4, 4, STOP | EXT, 0, NULL},
+};
+
+static field_t _MultimediaSystemControlMessage[] = {	/* CHOICE */
+	{FNAME("request") CHOICE, 4, 11, 15, DECODE | EXT,
+	 offsetof(MultimediaSystemControlMessage, request), _RequestMessage},
+	{FNAME("response") CHOICE, 5, 19, 24, DECODE | EXT,
+	 offsetof(MultimediaSystemControlMessage, response),
+	 _ResponseMessage},
+	{FNAME("command") CHOICE, 3, 7, 12, STOP | EXT, 0, NULL},
+	{FNAME("indication") CHOICE, 4, 14, 23, STOP | EXT, 0, NULL},
+};
+
+static field_t _H323_UU_PDU_h245Control[] = {	/* SEQUENCE OF */
+	{FNAME("item") CHOICE, 2, 4, 4, DECODE | OPEN | EXT,
+	 sizeof(MultimediaSystemControlMessage),
+	 _MultimediaSystemControlMessage}
+	,
+};
+
+static field_t _H323_UU_PDU[] = {	/* SEQUENCE */
+	{FNAME("h323-message-body") CHOICE, 3, 7, 13, DECODE | EXT,
+	 offsetof(H323_UU_PDU, h323_message_body),
+	 _H323_UU_PDU_h323_message_body},
+	{FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+	 _NonStandardParameter},
+	{FNAME("h4501SupplementaryService") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+	 NULL},
+	{FNAME("h245Tunneling") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("h245Control") SEQOF, SEMI, 0, 4, DECODE | OPT,
+	 offsetof(H323_UU_PDU, h245Control), _H323_UU_PDU_h245Control},
+	{FNAME("nonStandardControl") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("callLinkage") SEQ, 2, 2, 2, STOP | EXT | OPT, 0, NULL},
+	{FNAME("tunnelledSignallingMessage") SEQ, 2, 4, 4, STOP | EXT | OPT,
+	 0, NULL},
+	{FNAME("provisionalRespToH245Tunneling") NUL, FIXD, 0, 0, STOP | OPT,
+	 0, NULL},
+	{FNAME("stimulusControl") SEQ, 3, 3, 3, STOP | EXT | OPT, 0, NULL},
+	{FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+};
+
+static field_t _H323_UserInformation[] = {	/* SEQUENCE */
+	{FNAME("h323-uu-pdu") SEQ, 1, 2, 11, DECODE | EXT,
+	 offsetof(H323_UserInformation, h323_uu_pdu), _H323_UU_PDU},
+	{FNAME("user-data") SEQ, 0, 2, 2, STOP | EXT | OPT, 0, NULL},
+};
+
+static field_t _GatekeeperRequest[] = {	/* SEQUENCE */
+	{FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
+	{FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+	 _NonStandardParameter},
+	{FNAME("rasAddress") CHOICE, 3, 7, 7, DECODE | EXT,
+	 offsetof(GatekeeperRequest, rasAddress), _TransportAddress},
+	{FNAME("endpointType") SEQ, 6, 8, 10, STOP | EXT, 0, NULL},
+	{FNAME("gatekeeperIdentifier") BMPSTR, 7, 1, 0, STOP | OPT, 0, NULL},
+	{FNAME("callServices") SEQ, 0, 8, 8, STOP | EXT | OPT, 0, NULL},
+	{FNAME("endpointAlias") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("alternateEndpoints") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("tokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("authenticationCapability") SEQOF, SEMI, 0, 0, STOP | OPT, 0,
+	 NULL},
+	{FNAME("algorithmOIDs") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("integrity") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("integrityCheckValue") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+	{FNAME("supportsAltGK") NUL, FIXD, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("featureSet") SEQ, 3, 4, 4, STOP | EXT | OPT, 0, NULL},
+	{FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+};
+
+static field_t _GatekeeperConfirm[] = {	/* SEQUENCE */
+	{FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
+	{FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+	 _NonStandardParameter},
+	{FNAME("gatekeeperIdentifier") BMPSTR, 7, 1, 0, SKIP | OPT, 0, NULL},
+	{FNAME("rasAddress") CHOICE, 3, 7, 7, DECODE | EXT,
+	 offsetof(GatekeeperConfirm, rasAddress), _TransportAddress},
+	{FNAME("alternateGatekeeper") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("authenticationMode") CHOICE, 3, 7, 8, STOP | EXT | OPT, 0,
+	 NULL},
+	{FNAME("tokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("algorithmOID") OID, BYTE, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("integrity") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("integrityCheckValue") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+	{FNAME("featureSet") SEQ, 3, 4, 4, STOP | EXT | OPT, 0, NULL},
+	{FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+};
+
+static field_t _RegistrationRequest_callSignalAddress[] = {	/* SEQUENCE OF */
+	{FNAME("item") CHOICE, 3, 7, 7, DECODE | EXT,
+	 sizeof(TransportAddress), _TransportAddress}
+	,
+};
+
+static field_t _RegistrationRequest_rasAddress[] = {	/* SEQUENCE OF */
+	{FNAME("item") CHOICE, 3, 7, 7, DECODE | EXT,
+	 sizeof(TransportAddress), _TransportAddress}
+	,
+};
+
+static field_t _RegistrationRequest_terminalAlias[] = {	/* SEQUENCE OF */
+	{FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
+};
+
+static field_t _RegistrationRequest[] = {	/* SEQUENCE */
+	{FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
+	{FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+	 _NonStandardParameter},
+	{FNAME("discoveryComplete") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("callSignalAddress") SEQOF, SEMI, 0, 10, DECODE,
+	 offsetof(RegistrationRequest, callSignalAddress),
+	 _RegistrationRequest_callSignalAddress},
+	{FNAME("rasAddress") SEQOF, SEMI, 0, 10, DECODE,
+	 offsetof(RegistrationRequest, rasAddress),
+	 _RegistrationRequest_rasAddress},
+	{FNAME("terminalType") SEQ, 6, 8, 10, SKIP | EXT, 0, _EndpointType},
+	{FNAME("terminalAlias") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+	 _RegistrationRequest_terminalAlias},
+	{FNAME("gatekeeperIdentifier") BMPSTR, 7, 1, 0, SKIP | OPT, 0, NULL},
+	{FNAME("endpointVendor") SEQ, 2, 3, 3, SKIP | EXT, 0,
+	 _VendorIdentifier},
+	{FNAME("alternateEndpoints") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("timeToLive") INT, CONS, 1, 0, DECODE | OPT,
+	 offsetof(RegistrationRequest, timeToLive), NULL},
+	{FNAME("tokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("integrityCheckValue") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+	{FNAME("keepAlive") BOOL, FIXD, 0, 0, STOP, 0, NULL},
+	{FNAME("endpointIdentifier") BMPSTR, 7, 1, 0, STOP | OPT, 0, NULL},
+	{FNAME("willSupplyUUIEs") BOOL, FIXD, 0, 0, STOP, 0, NULL},
+	{FNAME("maintainConnection") BOOL, FIXD, 0, 0, STOP, 0, NULL},
+	{FNAME("alternateTransportAddresses") SEQ, 1, 1, 1, STOP | EXT | OPT,
+	 0, NULL},
+	{FNAME("additiveRegistration") NUL, FIXD, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("terminalAliasPattern") SEQOF, SEMI, 0, 0, STOP | OPT, 0,
+	 NULL},
+	{FNAME("supportsAltGK") NUL, FIXD, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("usageReportingCapability") SEQ, 3, 4, 4, STOP | EXT | OPT, 0,
+	 NULL},
+	{FNAME("multipleCalls") BOOL, FIXD, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("supportedH248Packages") SEQOF, SEMI, 0, 0, STOP | OPT, 0,
+	 NULL},
+	{FNAME("callCreditCapability") SEQ, 2, 2, 2, STOP | EXT | OPT, 0,
+	 NULL},
+	{FNAME("capacityReportingCapability") SEQ, 0, 1, 1, STOP | EXT | OPT,
+	 0, NULL},
+	{FNAME("capacity") SEQ, 2, 2, 2, STOP | EXT | OPT, 0, NULL},
+	{FNAME("featureSet") SEQ, 3, 4, 4, STOP | EXT | OPT, 0, NULL},
+	{FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+};
+
+static field_t _RegistrationConfirm_callSignalAddress[] = {	/* SEQUENCE OF */
+	{FNAME("item") CHOICE, 3, 7, 7, DECODE | EXT,
+	 sizeof(TransportAddress), _TransportAddress}
+	,
+};
+
+static field_t _RegistrationConfirm_terminalAlias[] = {	/* SEQUENCE OF */
+	{FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
+};
+
+static field_t _RegistrationConfirm[] = {	/* SEQUENCE */
+	{FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
+	{FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
+	{FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+	 _NonStandardParameter},
+	{FNAME("callSignalAddress") SEQOF, SEMI, 0, 10, DECODE,
+	 offsetof(RegistrationConfirm, callSignalAddress),
+	 _RegistrationConfirm_callSignalAddress},
+	{FNAME("terminalAlias") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+	 _RegistrationConfirm_terminalAlias},
+	{FNAME("gatekeeperIdentifier") BMPSTR, 7, 1, 0, SKIP | OPT, 0, NULL},
+	{FNAME("endpointIdentifier") BMPSTR, 7, 1, 0, SKIP, 0, NULL},
+	{FNAME("alternateGatekeeper") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
+	{FNAME("timeToLive") INT, CONS, 1, 0, DECODE | OPT,
+	 offsetof(RegistrationConfirm, timeToLive), NULL},
+	{FNAME("tokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("integrityCheckValue") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+	{FNAME("willRespondToIRR") BOOL, FIXD, 0, 0, STOP, 0, NULL},
+	{FNAME("preGrantedARQ") SEQ, 0, 4, 8, STOP | EXT | OPT, 0, NULL},
+	{FNAME("maintainConnection") BOOL, FIXD, 0, 0, STOP, 0, NULL},
+	{FNAME("serviceControl") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("supportsAdditiveRegistration") NUL, FIXD, 0, 0, STOP | OPT, 0,
+	 NULL},
+	{FNAME("terminalAliasPattern") SEQOF, SEMI, 0, 0, STOP | OPT, 0,
+	 NULL},
+	{FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("usageSpec") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("featureServerAlias") CHOICE, 1, 2, 7, STOP | EXT | OPT, 0,
+	 NULL},
+	{FNAME("capacityReportingSpec") SEQ, 0, 1, 1, STOP | EXT | OPT, 0,
+	 NULL},
+	{FNAME("featureSet") SEQ, 3, 4, 4, STOP | EXT | OPT, 0, NULL},
+	{FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+};
+
+static field_t _UnregistrationRequest_callSignalAddress[] = {	/* SEQUENCE OF */
+	{FNAME("item") CHOICE, 3, 7, 7, DECODE | EXT,
+	 sizeof(TransportAddress), _TransportAddress}
+	,
+};
+
+static field_t _UnregistrationRequest[] = {	/* SEQUENCE */
+	{FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
+	{FNAME("callSignalAddress") SEQOF, SEMI, 0, 10, DECODE,
+	 offsetof(UnregistrationRequest, callSignalAddress),
+	 _UnregistrationRequest_callSignalAddress},
+	{FNAME("endpointAlias") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("nonStandardData") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+	{FNAME("endpointIdentifier") BMPSTR, 7, 1, 0, STOP | OPT, 0, NULL},
+	{FNAME("alternateEndpoints") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("gatekeeperIdentifier") BMPSTR, 7, 1, 0, STOP | OPT, 0, NULL},
+	{FNAME("tokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("integrityCheckValue") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+	{FNAME("reason") CHOICE, 2, 4, 5, STOP | EXT | OPT, 0, NULL},
+	{FNAME("endpointAliasPattern") SEQOF, SEMI, 0, 0, STOP | OPT, 0,
+	 NULL},
+	{FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("alternateGatekeeper") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+};
+
+static field_t _CallModel[] = {	/* CHOICE */
+	{FNAME("direct") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+	{FNAME("gatekeeperRouted") NUL, FIXD, 0, 0, SKIP, 0, NULL},
+};
+
+static field_t _AdmissionRequest_destinationInfo[] = {	/* SEQUENCE OF */
+	{FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
+};
+
+static field_t _AdmissionRequest_destExtraCallInfo[] = {	/* SEQUENCE OF */
+	{FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
+};
+
+static field_t _AdmissionRequest_srcInfo[] = {	/* SEQUENCE OF */
+	{FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
+};
+
+static field_t _AdmissionRequest[] = {	/* SEQUENCE */
+	{FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
+	{FNAME("callType") CHOICE, 2, 4, 4, SKIP | EXT, 0, _CallType},
+	{FNAME("callModel") CHOICE, 1, 2, 2, SKIP | EXT | OPT, 0, _CallModel},
+	{FNAME("endpointIdentifier") BMPSTR, 7, 1, 0, SKIP, 0, NULL},
+	{FNAME("destinationInfo") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+	 _AdmissionRequest_destinationInfo},
+	{FNAME("destCallSignalAddress") CHOICE, 3, 7, 7, DECODE | EXT | OPT,
+	 offsetof(AdmissionRequest, destCallSignalAddress),
+	 _TransportAddress},
+	{FNAME("destExtraCallInfo") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
+	 _AdmissionRequest_destExtraCallInfo},
+	{FNAME("srcInfo") SEQOF, SEMI, 0, 0, SKIP, 0,
+	 _AdmissionRequest_srcInfo},
+	{FNAME("srcCallSignalAddress") CHOICE, 3, 7, 7, DECODE | EXT | OPT,
+	 offsetof(AdmissionRequest, srcCallSignalAddress), _TransportAddress},
+	{FNAME("bandWidth") INT, CONS, 0, 0, STOP, 0, NULL},
+	{FNAME("callReferenceValue") INT, WORD, 0, 0, STOP, 0, NULL},
+	{FNAME("nonStandardData") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+	{FNAME("callServices") SEQ, 0, 8, 8, STOP | EXT | OPT, 0, NULL},
+	{FNAME("conferenceID") OCTSTR, FIXD, 16, 0, STOP, 0, NULL},
+	{FNAME("activeMC") BOOL, FIXD, 0, 0, STOP, 0, NULL},
+	{FNAME("answerCall") BOOL, FIXD, 0, 0, STOP, 0, NULL},
+	{FNAME("canMapAlias") BOOL, FIXD, 0, 0, STOP, 0, NULL},
+	{FNAME("callIdentifier") SEQ, 0, 1, 1, STOP | EXT, 0, NULL},
+	{FNAME("srcAlternatives") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("destAlternatives") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("gatekeeperIdentifier") BMPSTR, 7, 1, 0, STOP | OPT, 0, NULL},
+	{FNAME("tokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("integrityCheckValue") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+	{FNAME("transportQOS") CHOICE, 2, 3, 3, STOP | EXT | OPT, 0, NULL},
+	{FNAME("willSupplyUUIEs") BOOL, FIXD, 0, 0, STOP, 0, NULL},
+	{FNAME("callLinkage") SEQ, 2, 2, 2, STOP | EXT | OPT, 0, NULL},
+	{FNAME("gatewayDataRate") SEQ, 2, 3, 3, STOP | EXT | OPT, 0, NULL},
+	{FNAME("capacity") SEQ, 2, 2, 2, STOP | EXT | OPT, 0, NULL},
+	{FNAME("circuitInfo") SEQ, 3, 3, 3, STOP | EXT | OPT, 0, NULL},
+	{FNAME("desiredProtocols") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("desiredTunnelledProtocol") SEQ, 1, 2, 2, STOP | EXT | OPT, 0,
+	 NULL},
+	{FNAME("featureSet") SEQ, 3, 4, 4, STOP | EXT | OPT, 0, NULL},
+	{FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+};
+
+static field_t _AdmissionConfirm[] = {	/* SEQUENCE */
+	{FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
+	{FNAME("bandWidth") INT, CONS, 0, 0, SKIP, 0, NULL},
+	{FNAME("callModel") CHOICE, 1, 2, 2, SKIP | EXT, 0, _CallModel},
+	{FNAME("destCallSignalAddress") CHOICE, 3, 7, 7, DECODE | EXT,
+	 offsetof(AdmissionConfirm, destCallSignalAddress),
+	 _TransportAddress},
+	{FNAME("irrFrequency") INT, WORD, 1, 0, STOP | OPT, 0, NULL},
+	{FNAME("nonStandardData") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+	{FNAME("destinationInfo") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("destExtraCallInfo") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("destinationType") SEQ, 6, 8, 10, STOP | EXT | OPT, 0, NULL},
+	{FNAME("remoteExtensionAddress") SEQOF, SEMI, 0, 0, STOP | OPT, 0,
+	 NULL},
+	{FNAME("alternateEndpoints") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("tokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("integrityCheckValue") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+	{FNAME("transportQOS") CHOICE, 2, 3, 3, STOP | EXT | OPT, 0, NULL},
+	{FNAME("willRespondToIRR") BOOL, FIXD, 0, 0, STOP, 0, NULL},
+	{FNAME("uuiesRequested") SEQ, 0, 9, 13, STOP | EXT, 0, NULL},
+	{FNAME("language") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("alternateTransportAddresses") SEQ, 1, 1, 1, STOP | EXT | OPT,
+	 0, NULL},
+	{FNAME("useSpecifiedTransport") CHOICE, 1, 2, 2, STOP | EXT | OPT, 0,
+	 NULL},
+	{FNAME("circuitInfo") SEQ, 3, 3, 3, STOP | EXT | OPT, 0, NULL},
+	{FNAME("usageSpec") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("supportedProtocols") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("serviceControl") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("multipleCalls") BOOL, FIXD, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("featureSet") SEQ, 3, 4, 4, STOP | EXT | OPT, 0, NULL},
+	{FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+};
+
+static field_t _LocationRequest_destinationInfo[] = {	/* SEQUENCE OF */
+	{FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
+};
+
+static field_t _LocationRequest[] = {	/* SEQUENCE */
+	{FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
+	{FNAME("endpointIdentifier") BMPSTR, 7, 1, 0, SKIP | OPT, 0, NULL},
+	{FNAME("destinationInfo") SEQOF, SEMI, 0, 0, SKIP, 0,
+	 _LocationRequest_destinationInfo},
+	{FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+	 _NonStandardParameter},
+	{FNAME("replyAddress") CHOICE, 3, 7, 7, DECODE | EXT,
+	 offsetof(LocationRequest, replyAddress), _TransportAddress},
+	{FNAME("sourceInfo") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("canMapAlias") BOOL, FIXD, 0, 0, STOP, 0, NULL},
+	{FNAME("gatekeeperIdentifier") BMPSTR, 7, 1, 0, STOP | OPT, 0, NULL},
+	{FNAME("tokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("integrityCheckValue") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+	{FNAME("desiredProtocols") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("desiredTunnelledProtocol") SEQ, 1, 2, 2, STOP | EXT | OPT, 0,
+	 NULL},
+	{FNAME("featureSet") SEQ, 3, 4, 4, STOP | EXT | OPT, 0, NULL},
+	{FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("hopCount") INT, 8, 1, 0, STOP | OPT, 0, NULL},
+	{FNAME("circuitInfo") SEQ, 3, 3, 3, STOP | EXT | OPT, 0, NULL},
+};
+
+static field_t _LocationConfirm[] = {	/* SEQUENCE */
+	{FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
+	{FNAME("callSignalAddress") CHOICE, 3, 7, 7, DECODE | EXT,
+	 offsetof(LocationConfirm, callSignalAddress), _TransportAddress},
+	{FNAME("rasAddress") CHOICE, 3, 7, 7, DECODE | EXT,
+	 offsetof(LocationConfirm, rasAddress), _TransportAddress},
+	{FNAME("nonStandardData") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+	{FNAME("destinationInfo") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("destExtraCallInfo") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("destinationType") SEQ, 6, 8, 10, STOP | EXT | OPT, 0, NULL},
+	{FNAME("remoteExtensionAddress") SEQOF, SEMI, 0, 0, STOP | OPT, 0,
+	 NULL},
+	{FNAME("alternateEndpoints") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("tokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("integrityCheckValue") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+	{FNAME("alternateTransportAddresses") SEQ, 1, 1, 1, STOP | EXT | OPT,
+	 0, NULL},
+	{FNAME("supportedProtocols") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("multipleCalls") BOOL, FIXD, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("featureSet") SEQ, 3, 4, 4, STOP | EXT | OPT, 0, NULL},
+	{FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("circuitInfo") SEQ, 3, 3, 3, STOP | EXT | OPT, 0, NULL},
+	{FNAME("serviceControl") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+};
+
+static field_t _InfoRequestResponse_callSignalAddress[] = {	/* SEQUENCE OF */
+	{FNAME("item") CHOICE, 3, 7, 7, DECODE | EXT,
+	 sizeof(TransportAddress), _TransportAddress}
+	,
+};
+
+static field_t _InfoRequestResponse[] = {	/* SEQUENCE */
+	{FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
+	 _NonStandardParameter},
+	{FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
+	{FNAME("endpointType") SEQ, 6, 8, 10, SKIP | EXT, 0, _EndpointType},
+	{FNAME("endpointIdentifier") BMPSTR, 7, 1, 0, SKIP, 0, NULL},
+	{FNAME("rasAddress") CHOICE, 3, 7, 7, DECODE | EXT,
+	 offsetof(InfoRequestResponse, rasAddress), _TransportAddress},
+	{FNAME("callSignalAddress") SEQOF, SEMI, 0, 10, DECODE,
+	 offsetof(InfoRequestResponse, callSignalAddress),
+	 _InfoRequestResponse_callSignalAddress},
+	{FNAME("endpointAlias") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("perCallInfo") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("tokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("cryptoTokens") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+	{FNAME("integrityCheckValue") SEQ, 0, 2, 2, STOP | OPT, 0, NULL},
+	{FNAME("needResponse") BOOL, FIXD, 0, 0, STOP, 0, NULL},
+	{FNAME("capacity") SEQ, 2, 2, 2, STOP | EXT | OPT, 0, NULL},
+	{FNAME("irrStatus") CHOICE, 2, 4, 4, STOP | EXT | OPT, 0, NULL},
+	{FNAME("unsolicited") BOOL, FIXD, 0, 0, STOP, 0, NULL},
+	{FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
+};
+
+static field_t _RasMessage[] = {	/* CHOICE */
+	{FNAME("gatekeeperRequest") SEQ, 4, 8, 18, DECODE | EXT,
+	 offsetof(RasMessage, gatekeeperRequest), _GatekeeperRequest},
+	{FNAME("gatekeeperConfirm") SEQ, 2, 5, 14, DECODE | EXT,
+	 offsetof(RasMessage, gatekeeperConfirm), _GatekeeperConfirm},
+	{FNAME("gatekeeperReject") SEQ, 2, 5, 11, STOP | EXT, 0, NULL},
+	{FNAME("registrationRequest") SEQ, 3, 10, 31, DECODE | EXT,
+	 offsetof(RasMessage, registrationRequest), _RegistrationRequest},
+	{FNAME("registrationConfirm") SEQ, 3, 7, 24, DECODE | EXT,
+	 offsetof(RasMessage, registrationConfirm), _RegistrationConfirm},
+	{FNAME("registrationReject") SEQ, 2, 5, 11, STOP | EXT, 0, NULL},
+	{FNAME("unregistrationRequest") SEQ, 3, 5, 15, DECODE | EXT,
+	 offsetof(RasMessage, unregistrationRequest), _UnregistrationRequest},
+	{FNAME("unregistrationConfirm") SEQ, 1, 2, 6, STOP | EXT, 0, NULL},
+	{FNAME("unregistrationReject") SEQ, 1, 3, 8, STOP | EXT, 0, NULL},
+	{FNAME("admissionRequest") SEQ, 7, 16, 34, DECODE | EXT,
+	 offsetof(RasMessage, admissionRequest), _AdmissionRequest},
+	{FNAME("admissionConfirm") SEQ, 2, 6, 27, DECODE | EXT,
+	 offsetof(RasMessage, admissionConfirm), _AdmissionConfirm},
+	{FNAME("admissionReject") SEQ, 1, 3, 11, STOP | EXT, 0, NULL},
+	{FNAME("bandwidthRequest") SEQ, 2, 7, 18, STOP | EXT, 0, NULL},
+	{FNAME("bandwidthConfirm") SEQ, 1, 3, 8, STOP | EXT, 0, NULL},
+	{FNAME("bandwidthReject") SEQ, 1, 4, 9, STOP | EXT, 0, NULL},
+	{FNAME("disengageRequest") SEQ, 1, 6, 19, STOP | EXT, 0, NULL},
+	{FNAME("disengageConfirm") SEQ, 1, 2, 9, STOP | EXT, 0, NULL},
+	{FNAME("disengageReject") SEQ, 1, 3, 8, STOP | EXT, 0, NULL},
+	{FNAME("locationRequest") SEQ, 2, 5, 17, DECODE | EXT,
+	 offsetof(RasMessage, locationRequest), _LocationRequest},
+	{FNAME("locationConfirm") SEQ, 1, 4, 19, DECODE | EXT,
+	 offsetof(RasMessage, locationConfirm), _LocationConfirm},
+	{FNAME("locationReject") SEQ, 1, 3, 10, STOP | EXT, 0, NULL},
+	{FNAME("infoRequest") SEQ, 2, 4, 15, STOP | EXT, 0, NULL},
+	{FNAME("infoRequestResponse") SEQ, 3, 8, 16, DECODE | EXT,
+	 offsetof(RasMessage, infoRequestResponse), _InfoRequestResponse},
+	{FNAME("nonStandardMessage") SEQ, 0, 2, 7, STOP | EXT, 0, NULL},
+	{FNAME("unknownMessageResponse") SEQ, 0, 1, 5, STOP | EXT, 0, NULL},
+	{FNAME("requestInProgress") SEQ, 4, 6, 6, STOP | EXT, 0, NULL},
+	{FNAME("resourcesAvailableIndicate") SEQ, 4, 9, 11, STOP | EXT, 0,
+	 NULL},
+	{FNAME("resourcesAvailableConfirm") SEQ, 4, 6, 7, STOP | EXT, 0,
+	 NULL},
+	{FNAME("infoRequestAck") SEQ, 4, 5, 5, STOP | EXT, 0, NULL},
+	{FNAME("infoRequestNak") SEQ, 5, 7, 7, STOP | EXT, 0, NULL},
+	{FNAME("serviceControlIndication") SEQ, 8, 10, 10, STOP | EXT, 0,
+	 NULL},
+	{FNAME("serviceControlResponse") SEQ, 7, 8, 8, STOP | EXT, 0, NULL},
+};

net/ipv4/netfilter/ip_conntrack_helper_h323_types.h

+/* Generated by Jing Min Zhao's ASN.1 parser, Mar 15 2006
+ *
+ * Copyright (c) 2006 Jing Min Zhao <zhaojingmin@users.sourceforge.net>
+ *
+ * This source code is licensed under General Public License version 2.
+ */
+
+typedef struct TransportAddress_ipAddress {	/* SEQUENCE */
+	int options;		/* No use */
+	unsigned ip;
+} TransportAddress_ipAddress;
+
+typedef struct TransportAddress {	/* CHOICE */
+	enum {
+		eTransportAddress_ipAddress,
+		eTransportAddress_ipSourceRoute,
+		eTransportAddress_ipxAddress,
+		eTransportAddress_ip6Address,
+		eTransportAddress_netBios,
+		eTransportAddress_nsap,
+		eTransportAddress_nonStandardAddress,
+	} choice;
+	union {
+		TransportAddress_ipAddress ipAddress;
+	};
+} TransportAddress;
+
+typedef struct DataProtocolCapability {	/* CHOICE */
+	enum {
+		eDataProtocolCapability_nonStandard,
+		eDataProtocolCapability_v14buffered,
+		eDataProtocolCapability_v42lapm,
+		eDataProtocolCapability_hdlcFrameTunnelling,
+		eDataProtocolCapability_h310SeparateVCStack,
+		eDataProtocolCapability_h310SingleVCStack,
+		eDataProtocolCapability_transparent,
+		eDataProtocolCapability_segmentationAndReassembly,
+		eDataProtocolCapability_hdlcFrameTunnelingwSAR,
+		eDataProtocolCapability_v120,
+		eDataProtocolCapability_separateLANStack,
+		eDataProtocolCapability_v76wCompression,
+		eDataProtocolCapability_tcp,
+		eDataProtocolCapability_udp,
+	} choice;
+} DataProtocolCapability;
+
+typedef struct DataApplicationCapability_application {	/* CHOICE */
+	enum {
+		eDataApplicationCapability_application_nonStandard,
+		eDataApplicationCapability_application_t120,
+		eDataApplicationCapability_application_dsm_cc,
+		eDataApplicationCapability_application_userData,
+		eDataApplicationCapability_application_t84,
+		eDataApplicationCapability_application_t434,
+		eDataApplicationCapability_application_h224,
+		eDataApplicationCapability_application_nlpid,
+		eDataApplicationCapability_application_dsvdControl,
+		eDataApplicationCapability_application_h222DataPartitioning,
+		eDataApplicationCapability_application_t30fax,
+		eDataApplicationCapability_application_t140,
+		eDataApplicationCapability_application_t38fax,
+		eDataApplicationCapability_application_genericDataCapability,
+	} choice;
+	union {
+		DataProtocolCapability t120;
+	};
+} DataApplicationCapability_application;
+
+typedef struct DataApplicationCapability {	/* SEQUENCE */
+	int options;		/* No use */
+	DataApplicationCapability_application application;
+} DataApplicationCapability;
+
+typedef struct DataType {	/* CHOICE */
+	enum {
+		eDataType_nonStandard,
+		eDataType_nullData,
+		eDataType_videoData,
+		eDataType_audioData,
+		eDataType_data,
+		eDataType_encryptionData,
+		eDataType_h235Control,
+		eDataType_h235Media,
+		eDataType_multiplexedStream,
+	} choice;
+	union {
+		DataApplicationCapability data;
+	};
+} DataType;
+
+typedef struct UnicastAddress_iPAddress {	/* SEQUENCE */
+	int options;		/* No use */
+	unsigned network;
+} UnicastAddress_iPAddress;
+
+typedef struct UnicastAddress {	/* CHOICE */
+	enum {
+		eUnicastAddress_iPAddress,
+		eUnicastAddress_iPXAddress,
+		eUnicastAddress_iP6Address,
+		eUnicastAddress_netBios,
+		eUnicastAddress_iPSourceRouteAddress,
+		eUnicastAddress_nsap,
+		eUnicastAddress_nonStandardAddress,
+	} choice;
+	union {
+		UnicastAddress_iPAddress iPAddress;
+	};
+} UnicastAddress;
+
+typedef struct H245_TransportAddress {	/* CHOICE */
+	enum {
+		eH245_TransportAddress_unicastAddress,
+		eH245_TransportAddress_multicastAddress,
+	} choice;
+	union {
+		UnicastAddress unicastAddress;
+	};
+} H245_TransportAddress;
+
+typedef struct H2250LogicalChannelParameters {	/* SEQUENCE */
+	enum {
+		eH2250LogicalChannelParameters_nonStandard = (1 << 31),
+		eH2250LogicalChannelParameters_associatedSessionID =
+		    (1 << 30),
+		eH2250LogicalChannelParameters_mediaChannel = (1 << 29),
+		eH2250LogicalChannelParameters_mediaGuaranteedDelivery =
+		    (1 << 28),
+		eH2250LogicalChannelParameters_mediaControlChannel =
+		    (1 << 27),
+		eH2250LogicalChannelParameters_mediaControlGuaranteedDelivery
+		    = (1 << 26),
+		eH2250LogicalChannelParameters_silenceSuppression = (1 << 25),
+		eH2250LogicalChannelParameters_destination = (1 << 24),
+		eH2250LogicalChannelParameters_dynamicRTPPayloadType =
+		    (1 << 23),
+		eH2250LogicalChannelParameters_mediaPacketization = (1 << 22),
+		eH2250LogicalChannelParameters_transportCapability =
+		    (1 << 21),
+		eH2250LogicalChannelParameters_redundancyEncoding = (1 << 20),
+		eH2250LogicalChannelParameters_source = (1 << 19),
+	} options;
+	H245_TransportAddress mediaChannel;
+	H245_TransportAddress mediaControlChannel;
+} H2250LogicalChannelParameters;
+
+typedef struct OpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters {	/* CHOICE */
+	enum {
+		eOpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters_h222LogicalChannelParameters,
+		eOpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters_h223LogicalChannelParameters,
+		eOpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters_v76LogicalChannelParameters,
+		eOpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters_h2250LogicalChannelParameters,
+		eOpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters_none,
+	} choice;
+	union {
+		H2250LogicalChannelParameters h2250LogicalChannelParameters;
+	};
+} OpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters;
+
+typedef struct OpenLogicalChannel_forwardLogicalChannelParameters {	/* SEQUENCE */
+	enum {
+		eOpenLogicalChannel_forwardLogicalChannelParameters_portNumber
+		    = (1 << 31),
+		eOpenLogicalChannel_forwardLogicalChannelParameters_forwardLogicalChannelDependency
+		    = (1 << 30),
+		eOpenLogicalChannel_forwardLogicalChannelParameters_replacementFor
+		    = (1 << 29),
+	} options;
+	DataType dataType;
+	OpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters
+	    multiplexParameters;
+} OpenLogicalChannel_forwardLogicalChannelParameters;
+
+typedef struct OpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters {	/* CHOICE */
+	enum {
+		eOpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters_h223LogicalChannelParameters,
+		eOpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters_v76LogicalChannelParameters,
+		eOpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters_h2250LogicalChannelParameters,
+	} choice;
+	union {
+		H2250LogicalChannelParameters h2250LogicalChannelParameters;
+	};
+} OpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters;
+
+typedef struct OpenLogicalChannel_reverseLogicalChannelParameters {	/* SEQUENCE */
+	enum {
+		eOpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters
+		    = (1 << 31),
+		eOpenLogicalChannel_reverseLogicalChannelParameters_reverseLogicalChannelDependency
+		    = (1 << 30),
+		eOpenLogicalChannel_reverseLogicalChannelParameters_replacementFor
+		    = (1 << 29),
+	} options;
+	OpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters
+	    multiplexParameters;
+} OpenLogicalChannel_reverseLogicalChannelParameters;
+
+typedef struct NetworkAccessParameters_networkAddress {	/* CHOICE */
+	enum {
+		eNetworkAccessParameters_networkAddress_q2931Address,
+		eNetworkAccessParameters_networkAddress_e164Address,
+		eNetworkAccessParameters_networkAddress_localAreaAddress,
+	} choice;
+	union {
+		H245_TransportAddress localAreaAddress;
+	};
+} NetworkAccessParameters_networkAddress;
+
+typedef struct NetworkAccessParameters {	/* SEQUENCE */
+	enum {
+		eNetworkAccessParameters_distribution = (1 << 31),
+		eNetworkAccessParameters_externalReference = (1 << 30),
+		eNetworkAccessParameters_t120SetupProcedure = (1 << 29),
+	} options;
+	NetworkAccessParameters_networkAddress networkAddress;
+} NetworkAccessParameters;
+
+typedef struct OpenLogicalChannel {	/* SEQUENCE */
+	enum {
+		eOpenLogicalChannel_reverseLogicalChannelParameters =
+		    (1 << 31),
+		eOpenLogicalChannel_separateStack = (1 << 30),
+		eOpenLogicalChannel_encryptionSync = (1 << 29),
+	} options;
+	OpenLogicalChannel_forwardLogicalChannelParameters
+	    forwardLogicalChannelParameters;
+	OpenLogicalChannel_reverseLogicalChannelParameters
+	    reverseLogicalChannelParameters;
+	NetworkAccessParameters separateStack;
+} OpenLogicalChannel;
+
+typedef struct Setup_UUIE_fastStart {	/* SEQUENCE OF */
+	int count;
+	OpenLogicalChannel item[30];
+} Setup_UUIE_fastStart;
+
+typedef struct Setup_UUIE {	/* SEQUENCE */
+	enum {
+		eSetup_UUIE_h245Address = (1 << 31),
+		eSetup_UUIE_sourceAddress = (1 << 30),
+		eSetup_UUIE_destinationAddress = (1 << 29),
+		eSetup_UUIE_destCallSignalAddress = (1 << 28),
+		eSetup_UUIE_destExtraCallInfo = (1 << 27),
+		eSetup_UUIE_destExtraCRV = (1 << 26),
+		eSetup_UUIE_callServices = (1 << 25),
+		eSetup_UUIE_sourceCallSignalAddress = (1 << 24),
+		eSetup_UUIE_remoteExtensionAddress = (1 << 23),
+		eSetup_UUIE_callIdentifier = (1 << 22),
+		eSetup_UUIE_h245SecurityCapability = (1 << 21),
+		eSetup_UUIE_tokens = (1 << 20),
+		eSetup_UUIE_cryptoTokens = (1 << 19),
+		eSetup_UUIE_fastStart = (1 << 18),
+		eSetup_UUIE_mediaWaitForConnect = (1 << 17),
+		eSetup_UUIE_canOverlapSend = (1 << 16),
+		eSetup_UUIE_endpointIdentifier = (1 << 15),
+		eSetup_UUIE_multipleCalls = (1 << 14),
+		eSetup_UUIE_maintainConnection = (1 << 13),
+		eSetup_UUIE_connectionParameters = (1 << 12),
+		eSetup_UUIE_language = (1 << 11),
+		eSetup_UUIE_presentationIndicator = (1 << 10),
+		eSetup_UUIE_screeningIndicator = (1 << 9),
+		eSetup_UUIE_serviceControl = (1 << 8),
+		eSetup_UUIE_symmetricOperationRequired = (1 << 7),
+		eSetup_UUIE_capacity = (1 << 6),
+		eSetup_UUIE_circuitInfo = (1 << 5),
+		eSetup_UUIE_desiredProtocols = (1 << 4),
+		eSetup_UUIE_neededFeatures = (1 << 3),
+		eSetup_UUIE_desiredFeatures = (1 << 2),
+		eSetup_UUIE_supportedFeatures = (1 << 1),
+		eSetup_UUIE_parallelH245Control = (1 << 0),
+	} options;
+	TransportAddress h245Address;
+	TransportAddress destCallSignalAddress;
+	TransportAddress sourceCallSignalAddress;
+	Setup_UUIE_fastStart fastStart;
+} Setup_UUIE;
+
+typedef struct CallProceeding_UUIE_fastStart {	/* SEQUENCE OF */
+	int count;
+	OpenLogicalChannel item[30];
+} CallProceeding_UUIE_fastStart;
+
+typedef struct CallProceeding_UUIE {	/* SEQUENCE */
+	enum {
+		eCallProceeding_UUIE_h245Address = (1 << 31),
+		eCallProceeding_UUIE_callIdentifier = (1 << 30),
+		eCallProceeding_UUIE_h245SecurityMode = (1 << 29),
+		eCallProceeding_UUIE_tokens = (1 << 28),
+		eCallProceeding_UUIE_cryptoTokens = (1 << 27),
+		eCallProceeding_UUIE_fastStart = (1 << 26),
+		eCallProceeding_UUIE_multipleCalls = (1 << 25),
+		eCallProceeding_UUIE_maintainConnection = (1 << 24),
+		eCallProceeding_UUIE_fastConnectRefused = (1 << 23),
+		eCallProceeding_UUIE_featureSet = (1 << 22),
+	} options;
+	TransportAddress h245Address;
+	CallProceeding_UUIE_fastStart fastStart;
+} CallProceeding_UUIE;
+
+typedef struct Connect_UUIE_fastStart {	/* SEQUENCE OF */
+	int count;
+	OpenLogicalChannel item[30];
+} Connect_UUIE_fastStart;
+
+typedef struct Connect_UUIE {	/* SEQUENCE */
+	enum {
+		eConnect_UUIE_h245Address = (1 << 31),
+		eConnect_UUIE_callIdentifier = (1 << 30),
+		eConnect_UUIE_h245SecurityMode = (1 << 29),
+		eConnect_UUIE_tokens = (1 << 28),
+		eConnect_UUIE_cryptoTokens = (1 << 27),
+		eConnect_UUIE_fastStart = (1 << 26),
+		eConnect_UUIE_multipleCalls = (1 << 25),
+		eConnect_UUIE_maintainConnection = (1 << 24),
+		eConnect_UUIE_language = (1 << 23),
+		eConnect_UUIE_connectedAddress = (1 << 22),
+		eConnect_UUIE_presentationIndicator = (1 << 21),
+		eConnect_UUIE_screeningIndicator = (1 << 20),
+		eConnect_UUIE_fastConnectRefused = (1 << 19),
+		eConnect_UUIE_serviceControl = (1 << 18),
+		eConnect_UUIE_capacity = (1 << 17),
+		eConnect_UUIE_featureSet = (1 << 16),
+	} options;
+	TransportAddress h245Address;
+	Connect_UUIE_fastStart fastStart;
+} Connect_UUIE;
+
+typedef struct Alerting_UUIE_fastStart {	/* SEQUENCE OF */
+	int count;
+	OpenLogicalChannel item[30];
+} Alerting_UUIE_fastStart;
+
+typedef struct Alerting_UUIE {	/* SEQUENCE */
+	enum {
+		eAlerting_UUIE_h245Address = (1 << 31),
+		eAlerting_UUIE_callIdentifier = (1 << 30),
+		eAlerting_UUIE_h245SecurityMode = (1 << 29),
+		eAlerting_UUIE_tokens = (1 << 28),
+		eAlerting_UUIE_cryptoTokens = (1 << 27),
+		eAlerting_UUIE_fastStart = (1 << 26),
+		eAlerting_UUIE_multipleCalls = (1 << 25),
+		eAlerting_UUIE_maintainConnection = (1 << 24),
+		eAlerting_UUIE_alertingAddress = (1 << 23),
+		eAlerting_UUIE_presentationIndicator = (1 << 22),
+		eAlerting_UUIE_screeningIndicator = (1 << 21),
+		eAlerting_UUIE_fastConnectRefused = (1 << 20),
+		eAlerting_UUIE_serviceControl = (1 << 19),
+		eAlerting_UUIE_capacity = (1 << 18),
+		eAlerting_UUIE_featureSet = (1 << 17),
+	} options;
+	TransportAddress h245Address;
+	Alerting_UUIE_fastStart fastStart;
+} Alerting_UUIE;
+
+typedef struct Information_UUIE_fastStart {	/* SEQUENCE OF */
+	int count;
+	OpenLogicalChannel item[30];
+} Information_UUIE_fastStart;
+
+typedef struct Information_UUIE {	/* SEQUENCE */
+	enum {
+		eInformation_UUIE_callIdentifier = (1 << 31),
+		eInformation_UUIE_tokens = (1 << 30),
+		eInformation_UUIE_cryptoTokens = (1 << 29),
+		eInformation_UUIE_fastStart = (1 << 28),
+		eInformation_UUIE_fastConnectRefused = (1 << 27),
+		eInformation_UUIE_circuitInfo = (1 << 26),
+	} options;
+	Information_UUIE_fastStart fastStart;
+} Information_UUIE;
+
+typedef struct FacilityReason {	/* CHOICE */
+	enum {
+		eFacilityReason_routeCallToGatekeeper,
+		eFacilityReason_callForwarded,
+		eFacilityReason_routeCallToMC,
+		eFacilityReason_undefinedReason,
+		eFacilityReason_conferenceListChoice,
+		eFacilityReason_startH245,
+		eFacilityReason_noH245,
+		eFacilityReason_newTokens,
+		eFacilityReason_featureSetUpdate,
+		eFacilityReason_forwardedElements,
+		eFacilityReason_transportedInformation,
+	} choice;
+} FacilityReason;
+
+typedef struct Facility_UUIE_fastStart {	/* SEQUENCE OF */
+	int count;
+	OpenLogicalChannel item[30];
+} Facility_UUIE_fastStart;
+
+typedef struct Facility_UUIE {	/* SEQUENCE */
+	enum {
+		eFacility_UUIE_alternativeAddress = (1 << 31),
+		eFacility_UUIE_alternativeAliasAddress = (1 << 30),
+		eFacility_UUIE_conferenceID = (1 << 29),
+		eFacility_UUIE_callIdentifier = (1 << 28),
+		eFacility_UUIE_destExtraCallInfo = (1 << 27),
+		eFacility_UUIE_remoteExtensionAddress = (1 << 26),
+		eFacility_UUIE_tokens = (1 << 25),
+		eFacility_UUIE_cryptoTokens = (1 << 24),
+		eFacility_UUIE_conferences = (1 << 23),
+		eFacility_UUIE_h245Address = (1 << 22),
+		eFacility_UUIE_fastStart = (1 << 21),
+		eFacility_UUIE_multipleCalls = (1 << 20),
+		eFacility_UUIE_maintainConnection = (1 << 19),
+		eFacility_UUIE_fastConnectRefused = (1 << 18),
+		eFacility_UUIE_serviceControl = (1 << 17),
+		eFacility_UUIE_circuitInfo = (1 << 16),
+		eFacility_UUIE_featureSet = (1 << 15),
+		eFacility_UUIE_destinationInfo = (1 << 14),
+		eFacility_UUIE_h245SecurityMode = (1 << 13),
+	} options;
+	FacilityReason reason;
+	TransportAddress h245Address;
+	Facility_UUIE_fastStart fastStart;
+} Facility_UUIE;
+
+typedef struct Progress_UUIE_fastStart {	/* SEQUENCE OF */
+	int count;
+	OpenLogicalChannel item[30];
+} Progress_UUIE_fastStart;
+
+typedef struct Progress_UUIE {	/* SEQUENCE */
+	enum {
+		eProgress_UUIE_h245Address = (1 << 31),
+		eProgress_UUIE_h245SecurityMode = (1 << 30),
+		eProgress_UUIE_tokens = (1 << 29),
+		eProgress_UUIE_cryptoTokens = (1 << 28),
+		eProgress_UUIE_fastStart = (1 << 27),
+		eProgress_UUIE_multipleCalls = (1 << 26),
+		eProgress_UUIE_maintainConnection = (1 << 25),
+		eProgress_UUIE_fastConnectRefused = (1 << 24),
+	} options;
+	TransportAddress h245Address;
+	Progress_UUIE_fastStart fastStart;
+} Progress_UUIE;
+
+typedef struct H323_UU_PDU_h323_message_body {	/* CHOICE */
+	enum {
+		eH323_UU_PDU_h323_message_body_setup,
+		eH323_UU_PDU_h323_message_body_callProceeding,
+		eH323_UU_PDU_h323_message_body_connect,
+		eH323_UU_PDU_h323_message_body_alerting,
+		eH323_UU_PDU_h323_message_body_information,
+		eH323_UU_PDU_h323_message_body_releaseComplete,
+		eH323_UU_PDU_h323_message_body_facility,
+		eH323_UU_PDU_h323_message_body_progress,
+		eH323_UU_PDU_h323_message_body_empty,
+		eH323_UU_PDU_h323_message_body_status,
+		eH323_UU_PDU_h323_message_body_statusInquiry,
+		eH323_UU_PDU_h323_message_body_setupAcknowledge,
+		eH323_UU_PDU_h323_message_body_notify,
+	} choice;
+	union {
+		Setup_UUIE setup;
+		CallProceeding_UUIE callProceeding;
+		Connect_UUIE connect;
+		Alerting_UUIE alerting;
+		Information_UUIE information;
+		Facility_UUIE facility;
+		Progress_UUIE progress;
+	};
+} H323_UU_PDU_h323_message_body;
+
+typedef struct RequestMessage {	/* CHOICE */
+	enum {
+		eRequestMessage_nonStandard,
+		eRequestMessage_masterSlaveDetermination,
+		eRequestMessage_terminalCapabilitySet,
+		eRequestMessage_openLogicalChannel,
+		eRequestMessage_closeLogicalChannel,
+		eRequestMessage_requestChannelClose,
+		eRequestMessage_multiplexEntrySend,
+		eRequestMessage_requestMultiplexEntry,
+		eRequestMessage_requestMode,
+		eRequestMessage_roundTripDelayRequest,
+		eRequestMessage_maintenanceLoopRequest,
+		eRequestMessage_communicationModeRequest,
+		eRequestMessage_conferenceRequest,
+		eRequestMessage_multilinkRequest,
+		eRequestMessage_logicalChannelRateRequest,
+	} choice;
+	union {
+		OpenLogicalChannel openLogicalChannel;
+	};
+} RequestMessage;
+
+typedef struct OpenLogicalChannelAck_reverseLogicalChannelParameters_multiplexParameters {	/* CHOICE */
+	enum {
+		eOpenLogicalChannelAck_reverseLogicalChannelParameters_multiplexParameters_h222LogicalChannelParameters,
+		eOpenLogicalChannelAck_reverseLogicalChannelParameters_multiplexParameters_h2250LogicalChannelParameters,
+	} choice;
+	union {
+		H2250LogicalChannelParameters h2250LogicalChannelParameters;
+	};
+} OpenLogicalChannelAck_reverseLogicalChannelParameters_multiplexParameters;
+
+typedef struct OpenLogicalChannelAck_reverseLogicalChannelParameters {	/* SEQUENCE */
+	enum {
+		eOpenLogicalChannelAck_reverseLogicalChannelParameters_portNumber
+		    = (1 << 31),
+		eOpenLogicalChannelAck_reverseLogicalChannelParameters_multiplexParameters
+		    = (1 << 30),
+		eOpenLogicalChannelAck_reverseLogicalChannelParameters_replacementFor
+		    = (1 << 29),
+	} options;
+	OpenLogicalChannelAck_reverseLogicalChannelParameters_multiplexParameters
+	    multiplexParameters;
+} OpenLogicalChannelAck_reverseLogicalChannelParameters;
+
+typedef struct H2250LogicalChannelAckParameters {	/* SEQUENCE */
+	enum {
+		eH2250LogicalChannelAckParameters_nonStandard = (1 << 31),
+		eH2250LogicalChannelAckParameters_sessionID = (1 << 30),
+		eH2250LogicalChannelAckParameters_mediaChannel = (1 << 29),
+		eH2250LogicalChannelAckParameters_mediaControlChannel =
+		    (1 << 28),
+		eH2250LogicalChannelAckParameters_dynamicRTPPayloadType =
+		    (1 << 27),
+		eH2250LogicalChannelAckParameters_flowControlToZero =
+		    (1 << 26),
+		eH2250LogicalChannelAckParameters_portNumber = (1 << 25),
+	} options;
+	H245_TransportAddress mediaChannel;
+	H245_TransportAddress mediaControlChannel;
+} H2250LogicalChannelAckParameters;
+
+typedef struct OpenLogicalChannelAck_forwardMultiplexAckParameters {	/* CHOICE */
+	enum {
+		eOpenLogicalChannelAck_forwardMultiplexAckParameters_h2250LogicalChannelAckParameters,
+	} choice;
+	union {
+		H2250LogicalChannelAckParameters
+		    h2250LogicalChannelAckParameters;
+	};
+} OpenLogicalChannelAck_forwardMultiplexAckParameters;
+
+typedef struct OpenLogicalChannelAck {	/* SEQUENCE */
+	enum {
+		eOpenLogicalChannelAck_reverseLogicalChannelParameters =
+		    (1 << 31),
+		eOpenLogicalChannelAck_separateStack = (1 << 30),
+		eOpenLogicalChannelAck_forwardMultiplexAckParameters =
+		    (1 << 29),
+		eOpenLogicalChannelAck_encryptionSync = (1 << 28),
+	} options;
+	OpenLogicalChannelAck_reverseLogicalChannelParameters
+	    reverseLogicalChannelParameters;
+	OpenLogicalChannelAck_forwardMultiplexAckParameters
+	    forwardMultiplexAckParameters;
+} OpenLogicalChannelAck;
+
+typedef struct ResponseMessage {	/* CHOICE */
+	enum {
+		eResponseMessage_nonStandard,
+		eResponseMessage_masterSlaveDeterminationAck,
+		eResponseMessage_masterSlaveDeterminationReject,
+		eResponseMessage_terminalCapabilitySetAck,
+		eResponseMessage_terminalCapabilitySetReject,
+		eResponseMessage_openLogicalChannelAck,
+		eResponseMessage_openLogicalChannelReject,
+		eResponseMessage_closeLogicalChannelAck,
+		eResponseMessage_requestChannelCloseAck,
+		eResponseMessage_requestChannelCloseReject,
+		eResponseMessage_multiplexEntrySendAck,
+		eResponseMessage_multiplexEntrySendReject,
+		eResponseMessage_requestMultiplexEntryAck,
+		eResponseMessage_requestMultiplexEntryReject,
+		eResponseMessage_requestModeAck,
+		eResponseMessage_requestModeReject,
+		eResponseMessage_roundTripDelayResponse,
+		eResponseMessage_maintenanceLoopAck,
+		eResponseMessage_maintenanceLoopReject,
+		eResponseMessage_communicationModeResponse,
+		eResponseMessage_conferenceResponse,
+		eResponseMessage_multilinkResponse,
+		eResponseMessage_logicalChannelRateAcknowledge,
+		eResponseMessage_logicalChannelRateReject,
+	} choice;
+	union {
+		OpenLogicalChannelAck openLogicalChannelAck;
+	};
+} ResponseMessage;
+
+typedef struct MultimediaSystemControlMessage {	/* CHOICE */
+	enum {
+		eMultimediaSystemControlMessage_request,
+		eMultimediaSystemControlMessage_response,
+		eMultimediaSystemControlMessage_command,
+		eMultimediaSystemControlMessage_indication,
+	} choice;
+	union {
+		RequestMessage request;
+		ResponseMessage response;
+	};
+} MultimediaSystemControlMessage;
+
+typedef struct H323_UU_PDU_h245Control {	/* SEQUENCE OF */
+	int count;
+	MultimediaSystemControlMessage item[4];
+} H323_UU_PDU_h245Control;
+
+typedef struct H323_UU_PDU {	/* SEQUENCE */
+	enum {
+		eH323_UU_PDU_nonStandardData = (1 << 31),
+		eH323_UU_PDU_h4501SupplementaryService = (1 << 30),
+		eH323_UU_PDU_h245Tunneling = (1 << 29),
+		eH323_UU_PDU_h245Control = (1 << 28),
+		eH323_UU_PDU_nonStandardControl = (1 << 27),
+		eH323_UU_PDU_callLinkage = (1 << 26),
+		eH323_UU_PDU_tunnelledSignallingMessage = (1 << 25),
+		eH323_UU_PDU_provisionalRespToH245Tunneling = (1 << 24),
+		eH323_UU_PDU_stimulusControl = (1 << 23),
+		eH323_UU_PDU_genericData = (1 << 22),
+	} options;
+	H323_UU_PDU_h323_message_body h323_message_body;
+	H323_UU_PDU_h245Control h245Control;
+} H323_UU_PDU;
+
+typedef struct H323_UserInformation {	/* SEQUENCE */
+	enum {
+		eH323_UserInformation_user_data = (1 << 31),
+	} options;
+	H323_UU_PDU h323_uu_pdu;
+} H323_UserInformation;
+
+typedef struct GatekeeperRequest {	/* SEQUENCE */
+	enum {
+		eGatekeeperRequest_nonStandardData = (1 << 31),
+		eGatekeeperRequest_gatekeeperIdentifier = (1 << 30),
+		eGatekeeperRequest_callServices = (1 << 29),
+		eGatekeeperRequest_endpointAlias = (1 << 28),
+		eGatekeeperRequest_alternateEndpoints = (1 << 27),
+		eGatekeeperRequest_tokens = (1 << 26),
+		eGatekeeperRequest_cryptoTokens = (1 << 25),
+		eGatekeeperRequest_authenticationCapability = (1 << 24),
+		eGatekeeperRequest_algorithmOIDs = (1 << 23),
+		eGatekeeperRequest_integrity = (1 << 22),
+		eGatekeeperRequest_integrityCheckValue = (1 << 21),
+		eGatekeeperRequest_supportsAltGK = (1 << 20),
+		eGatekeeperRequest_featureSet = (1 << 19),
+		eGatekeeperRequest_genericData = (1 << 18),
+	} options;
+	TransportAddress rasAddress;
+} GatekeeperRequest;
+
+typedef struct GatekeeperConfirm {	/* SEQUENCE */
+	enum {
+		eGatekeeperConfirm_nonStandardData = (1 << 31),
+		eGatekeeperConfirm_gatekeeperIdentifier = (1 << 30),
+		eGatekeeperConfirm_alternateGatekeeper = (1 << 29),
+		eGatekeeperConfirm_authenticationMode = (1 << 28),
+		eGatekeeperConfirm_tokens = (1 << 27),
+		eGatekeeperConfirm_cryptoTokens = (1 << 26),
+		eGatekeeperConfirm_algorithmOID = (1 << 25),
+		eGatekeeperConfirm_integrity = (1 << 24),
+		eGatekeeperConfirm_integrityCheckValue = (1 << 23),
+		eGatekeeperConfirm_featureSet = (1 << 22),
+		eGatekeeperConfirm_genericData = (1 << 21),
+	} options;
+	TransportAddress rasAddress;
+} GatekeeperConfirm;
+
+typedef struct RegistrationRequest_callSignalAddress {	/* SEQUENCE OF */
+	int count;
+	TransportAddress item[10];
+} RegistrationRequest_callSignalAddress;
+
+typedef struct RegistrationRequest_rasAddress {	/* SEQUENCE OF */
+	int count;
+	TransportAddress item[10];
+} RegistrationRequest_rasAddress;
+
+typedef struct RegistrationRequest {	/* SEQUENCE */
+	enum {
+		eRegistrationRequest_nonStandardData = (1 << 31),
+		eRegistrationRequest_terminalAlias = (1 << 30),
+		eRegistrationRequest_gatekeeperIdentifier = (1 << 29),
+		eRegistrationRequest_alternateEndpoints = (1 << 28),
+		eRegistrationRequest_timeToLive = (1 << 27),
+		eRegistrationRequest_tokens = (1 << 26),
+		eRegistrationRequest_cryptoTokens = (1 << 25),
+		eRegistrationRequest_integrityCheckValue = (1 << 24),
+		eRegistrationRequest_keepAlive = (1 << 23),
+		eRegistrationRequest_endpointIdentifier = (1 << 22),
+		eRegistrationRequest_willSupplyUUIEs = (1 << 21),
+		eRegistrationRequest_maintainConnection = (1 << 20),
+		eRegistrationRequest_alternateTransportAddresses = (1 << 19),
+		eRegistrationRequest_additiveRegistration = (1 << 18),
+		eRegistrationRequest_terminalAliasPattern = (1 << 17),
+		eRegistrationRequest_supportsAltGK = (1 << 16),
+		eRegistrationRequest_usageReportingCapability = (1 << 15),
+		eRegistrationRequest_multipleCalls = (1 << 14),
+		eRegistrationRequest_supportedH248Packages = (1 << 13),
+		eRegistrationRequest_callCreditCapability = (1 << 12),
+		eRegistrationRequest_capacityReportingCapability = (1 << 11),
+		eRegistrationRequest_capacity = (1 << 10),
+		eRegistrationRequest_featureSet = (1 << 9),
+		eRegistrationRequest_genericData = (1 << 8),
+	} options;
+	RegistrationRequest_callSignalAddress callSignalAddress;
+	RegistrationRequest_rasAddress rasAddress;
+	unsigned timeToLive;
+} RegistrationRequest;
+
+typedef struct RegistrationConfirm_callSignalAddress {	/* SEQUENCE OF */
+	int count;
+	TransportAddress item[10];
+} RegistrationConfirm_callSignalAddress;
+
+typedef struct RegistrationConfirm {	/* SEQUENCE */
+	enum {
+		eRegistrationConfirm_nonStandardData = (1 << 31),
+		eRegistrationConfirm_terminalAlias = (1 << 30),
+		eRegistrationConfirm_gatekeeperIdentifier = (1 << 29),
+		eRegistrationConfirm_alternateGatekeeper = (1 << 28),
+		eRegistrationConfirm_timeToLive = (1 << 27),
+		eRegistrationConfirm_tokens = (1 << 26),
+		eRegistrationConfirm_cryptoTokens = (1 << 25),
+		eRegistrationConfirm_integrityCheckValue = (1 << 24),
+		eRegistrationConfirm_willRespondToIRR = (1 << 23),
+		eRegistrationConfirm_preGrantedARQ = (1 << 22),
+		eRegistrationConfirm_maintainConnection = (1 << 21),
+		eRegistrationConfirm_serviceControl = (1 << 20),
+		eRegistrationConfirm_supportsAdditiveRegistration = (1 << 19),
+		eRegistrationConfirm_terminalAliasPattern = (1 << 18),
+		eRegistrationConfirm_supportedPrefixes = (1 << 17),
+		eRegistrationConfirm_usageSpec = (1 << 16),
+		eRegistrationConfirm_featureServerAlias = (1 << 15),
+		eRegistrationConfirm_capacityReportingSpec = (1 << 14),
+		eRegistrationConfirm_featureSet = (1 << 13),
+		eRegistrationConfirm_genericData = (1 << 12),
+	} options;
+	RegistrationConfirm_callSignalAddress callSignalAddress;
+	unsigned timeToLive;
+} RegistrationConfirm;
+
+typedef struct UnregistrationRequest_callSignalAddress {	/* SEQUENCE OF */
+	int count;
+	TransportAddress item[10];
+} UnregistrationRequest_callSignalAddress;
+
+typedef struct UnregistrationRequest {	/* SEQUENCE */
+	enum {
+		eUnregistrationRequest_endpointAlias = (1 << 31),
+		eUnregistrationRequest_nonStandardData = (1 << 30),
+		eUnregistrationRequest_endpointIdentifier = (1 << 29),
+		eUnregistrationRequest_alternateEndpoints = (1 << 28),
+		eUnregistrationRequest_gatekeeperIdentifier = (1 << 27),
+		eUnregistrationRequest_tokens = (1 << 26),
+		eUnregistrationRequest_cryptoTokens = (1 << 25),
+		eUnregistrationRequest_integrityCheckValue = (1 << 24),
+		eUnregistrationRequest_reason = (1 << 23),
+		eUnregistrationRequest_endpointAliasPattern = (1 << 22),
+		eUnregistrationRequest_supportedPrefixes = (1 << 21),
+		eUnregistrationRequest_alternateGatekeeper = (1 << 20),
+		eUnregistrationRequest_genericData = (1 << 19),
+	} options;
+	UnregistrationRequest_callSignalAddress callSignalAddress;
+} UnregistrationRequest;
+
+typedef struct AdmissionRequest {	/* SEQUENCE */
+	enum {
+		eAdmissionRequest_callModel = (1 << 31),
+		eAdmissionRequest_destinationInfo = (1 << 30),
+		eAdmissionRequest_destCallSignalAddress = (1 << 29),
+		eAdmissionRequest_destExtraCallInfo = (1 << 28),
+		eAdmissionRequest_srcCallSignalAddress = (1 << 27),
+		eAdmissionRequest_nonStandardData = (1 << 26),
+		eAdmissionRequest_callServices = (1 << 25),
+		eAdmissionRequest_canMapAlias = (1 << 24),
+		eAdmissionRequest_callIdentifier = (1 << 23),
+		eAdmissionRequest_srcAlternatives = (1 << 22),
+		eAdmissionRequest_destAlternatives = (1 << 21),
+		eAdmissionRequest_gatekeeperIdentifier = (1 << 20),
+		eAdmissionRequest_tokens = (1 << 19),
+		eAdmissionRequest_cryptoTokens = (1 << 18),
+		eAdmissionRequest_integrityCheckValue = (1 << 17),
+		eAdmissionRequest_transportQOS = (1 << 16),
+		eAdmissionRequest_willSupplyUUIEs = (1 << 15),
+		eAdmissionRequest_callLinkage = (1 << 14),
+		eAdmissionRequest_gatewayDataRate = (1 << 13),
+		eAdmissionRequest_capacity = (1 << 12),
+		eAdmissionRequest_circuitInfo = (1 << 11),
+		eAdmissionRequest_desiredProtocols = (1 << 10),
+		eAdmissionRequest_desiredTunnelledProtocol = (1 << 9),
+		eAdmissionRequest_featureSet = (1 << 8),
+		eAdmissionRequest_genericData = (1 << 7),
+	} options;
+	TransportAddress destCallSignalAddress;
+	TransportAddress srcCallSignalAddress;
+} AdmissionRequest;
+
+typedef struct AdmissionConfirm {	/* SEQUENCE */
+	enum {
+		eAdmissionConfirm_irrFrequency = (1 << 31),
+		eAdmissionConfirm_nonStandardData = (1 << 30),
+		eAdmissionConfirm_destinationInfo = (1 << 29),
+		eAdmissionConfirm_destExtraCallInfo = (1 << 28),
+		eAdmissionConfirm_destinationType = (1 << 27),
+		eAdmissionConfirm_remoteExtensionAddress = (1 << 26),
+		eAdmissionConfirm_alternateEndpoints = (1 << 25),
+		eAdmissionConfirm_tokens = (1 << 24),
+		eAdmissionConfirm_cryptoTokens = (1 << 23),
+		eAdmissionConfirm_integrityCheckValue = (1 << 22),
+		eAdmissionConfirm_transportQOS = (1 << 21),
+		eAdmissionConfirm_willRespondToIRR = (1 << 20),
+		eAdmissionConfirm_uuiesRequested = (1 << 19),
+		eAdmissionConfirm_language = (1 << 18),
+		eAdmissionConfirm_alternateTransportAddresses = (1 << 17),
+		eAdmissionConfirm_useSpecifiedTransport = (1 << 16),
+		eAdmissionConfirm_circuitInfo = (1 << 15),
+		eAdmissionConfirm_usageSpec = (1 << 14),
+		eAdmissionConfirm_supportedProtocols = (1 << 13),
+		eAdmissionConfirm_serviceControl = (1 << 12),
+		eAdmissionConfirm_multipleCalls = (1 << 11),
+		eAdmissionConfirm_featureSet = (1 << 10),
+		eAdmissionConfirm_genericData = (1 << 9),
+	} options;
+	TransportAddress destCallSignalAddress;
+} AdmissionConfirm;
+
+typedef struct LocationRequest {	/* SEQUENCE */
+	enum {
+		eLocationRequest_endpointIdentifier = (1 << 31),
+		eLocationRequest_nonStandardData = (1 << 30),
+		eLocationRequest_sourceInfo = (1 << 29),
+		eLocationRequest_canMapAlias = (1 << 28),
+		eLocationRequest_gatekeeperIdentifier = (1 << 27),
+		eLocationRequest_tokens = (1 << 26),
+		eLocationRequest_cryptoTokens = (1 << 25),
+		eLocationRequest_integrityCheckValue = (1 << 24),
+		eLocationRequest_desiredProtocols = (1 << 23),
+		eLocationRequest_desiredTunnelledProtocol = (1 << 22),
+		eLocationRequest_featureSet = (1 << 21),
+		eLocationRequest_genericData = (1 << 20),
+		eLocationRequest_hopCount = (1 << 19),
+		eLocationRequest_circuitInfo = (1 << 18),
+	} options;
+	TransportAddress replyAddress;
+} LocationRequest;
+
+typedef struct LocationConfirm {	/* SEQUENCE */
+	enum {
+		eLocationConfirm_nonStandardData = (1 << 31),
+		eLocationConfirm_destinationInfo = (1 << 30),
+		eLocationConfirm_destExtraCallInfo = (1 << 29),
+		eLocationConfirm_destinationType = (1 << 28),
+		eLocationConfirm_remoteExtensionAddress = (1 << 27),
+		eLocationConfirm_alternateEndpoints = (1 << 26),
+		eLocationConfirm_tokens = (1 << 25),
+		eLocationConfirm_cryptoTokens = (1 << 24),
+		eLocationConfirm_integrityCheckValue = (1 << 23),
+		eLocationConfirm_alternateTransportAddresses = (1 << 22),
+		eLocationConfirm_supportedProtocols = (1 << 21),
+		eLocationConfirm_multipleCalls = (1 << 20),
+		eLocationConfirm_featureSet = (1 << 19),
+		eLocationConfirm_genericData = (1 << 18),
+		eLocationConfirm_circuitInfo = (1 << 17),
+		eLocationConfirm_serviceControl = (1 << 16),
+	} options;
+	TransportAddress callSignalAddress;
+	TransportAddress rasAddress;
+} LocationConfirm;
+
+typedef struct InfoRequestResponse_callSignalAddress {	/* SEQUENCE OF */
+	int count;
+	TransportAddress item[10];
+} InfoRequestResponse_callSignalAddress;
+
+typedef struct InfoRequestResponse {	/* SEQUENCE */
+	enum {
+		eInfoRequestResponse_nonStandardData = (1 << 31),
+		eInfoRequestResponse_endpointAlias = (1 << 30),
+		eInfoRequestResponse_perCallInfo = (1 << 29),
+		eInfoRequestResponse_tokens = (1 << 28),
+		eInfoRequestResponse_cryptoTokens = (1 << 27),
+		eInfoRequestResponse_integrityCheckValue = (1 << 26),
+		eInfoRequestResponse_needResponse = (1 << 25),
+		eInfoRequestResponse_capacity = (1 << 24),
+		eInfoRequestResponse_irrStatus = (1 << 23),
+		eInfoRequestResponse_unsolicited = (1 << 22),
+		eInfoRequestResponse_genericData = (1 << 21),
+	} options;
+	TransportAddress rasAddress;
+	InfoRequestResponse_callSignalAddress callSignalAddress;
+} InfoRequestResponse;
+
+typedef struct RasMessage {	/* CHOICE */
+	enum {
+		eRasMessage_gatekeeperRequest,
+		eRasMessage_gatekeeperConfirm,
+		eRasMessage_gatekeeperReject,
+		eRasMessage_registrationRequest,
+		eRasMessage_registrationConfirm,
+		eRasMessage_registrationReject,
+		eRasMessage_unregistrationRequest,
+		eRasMessage_unregistrationConfirm,
+		eRasMessage_unregistrationReject,
+		eRasMessage_admissionRequest,
+		eRasMessage_admissionConfirm,
+		eRasMessage_admissionReject,
+		eRasMessage_bandwidthRequest,
+		eRasMessage_bandwidthConfirm,
+		eRasMessage_bandwidthReject,
+		eRasMessage_disengageRequest,
+		eRasMessage_disengageConfirm,
+		eRasMessage_disengageReject,
+		eRasMessage_locationRequest,
+		eRasMessage_locationConfirm,
+		eRasMessage_locationReject,
+		eRasMessage_infoRequest,
+		eRasMessage_infoRequestResponse,
+		eRasMessage_nonStandardMessage,
+		eRasMessage_unknownMessageResponse,
+		eRasMessage_requestInProgress,
+		eRasMessage_resourcesAvailableIndicate,
+		eRasMessage_resourcesAvailableConfirm,
+		eRasMessage_infoRequestAck,
+		eRasMessage_infoRequestNak,
+		eRasMessage_serviceControlIndication,
+		eRasMessage_serviceControlResponse,
+	} choice;
+	union {
+		GatekeeperRequest gatekeeperRequest;
+		GatekeeperConfirm gatekeeperConfirm;
+		RegistrationRequest registrationRequest;
+		RegistrationConfirm registrationConfirm;
+		UnregistrationRequest unregistrationRequest;
+		AdmissionRequest admissionRequest;
+		AdmissionConfirm admissionConfirm;
+		LocationRequest locationRequest;
+		LocationConfirm locationConfirm;
+		InfoRequestResponse infoRequestResponse;
+	};
+} RasMessage;

net/ipv4/netfilter/ip_nat_helper_h323.c

+/*
+ * H.323 extension for NAT alteration.
+ *
+ * Copyright (c) 2006 Jing Min Zhao <zhaojingmin@users.sourceforge.net>
+ *
+ * This source code is licensed under General Public License version 2.
+ *
+ * Based on the 'brute force' H.323 NAT module by
+ * Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
+ *
+ * Changes:
+ *	2006-02-01 - initial version 0.1
+ *
+ *	2006-02-20 - version 0.2
+ *	  1. Changed source format to follow kernel conventions
+ *	  2. Deleted some unnecessary structures
+ *	  3. Minor fixes
+ *
+ * 	2006-03-10 - version 0.3
+ * 	  1. Added support for multiple TPKTs in one packet (suggested by
+ * 	     Patrick McHardy)
+ * 	  2. Added support for non-linear skb (based on Patrick McHardy's patch)
+ * 	  3. Eliminated unnecessary return code
+ *
+ * 	2006-03-15 - version 0.4
+ * 	  1. Added support for T.120 channels
+ * 	  2. Added parameter gkrouted_only (suggested by Patrick McHardy)
+ */
+
+#include <linux/module.h>
+#include <linux/netfilter_ipv4.h>
+#include <linux/netfilter.h>
+#include <linux/ip.h>
+#include <linux/tcp.h>
+#include <linux/moduleparam.h>
+#include <net/tcp.h>
+#include <linux/netfilter_ipv4/ip_nat.h>
+#include <linux/netfilter_ipv4/ip_nat_helper.h>
+#include <linux/netfilter_ipv4/ip_nat_rule.h>
+#include <linux/netfilter_ipv4/ip_conntrack_tuple.h>
+#include <linux/netfilter_ipv4/ip_conntrack_h323.h>
+#include <linux/netfilter_ipv4/ip_conntrack_helper.h>
+
+#include "ip_conntrack_helper_h323_asn1.h"
+
+#if 0
+#define DEBUGP printk
+#else
+#define DEBUGP(format, args...)
+#endif
+
+extern int get_h245_addr(unsigned char *data, H245_TransportAddress * addr,
+			 u_int32_t * ip, u_int16_t * port);
+extern int get_h225_addr(unsigned char *data, TransportAddress * addr,
+			 u_int32_t * ip, u_int16_t * port);
+extern void ip_conntrack_h245_expect(struct ip_conntrack *new,
+				     struct ip_conntrack_expect *this);
+extern void ip_conntrack_q931_expect(struct ip_conntrack *new,
+				     struct ip_conntrack_expect *this);
+extern int (*set_h245_addr_hook) (struct sk_buff ** pskb,
+				  unsigned char **data, int dataoff,
+				  H245_TransportAddress * addr,
+				  u_int32_t ip, u_int16_t port);
+extern int (*set_h225_addr_hook) (struct sk_buff ** pskb,
+				  unsigned char **data, int dataoff,
+				  TransportAddress * addr,
+				  u_int32_t ip, u_int16_t port);
+extern int (*set_sig_addr_hook) (struct sk_buff ** pskb,
+				 struct ip_conntrack * ct,
+				 enum ip_conntrack_info ctinfo,
+				 unsigned char **data,
+				 TransportAddress * addr, int count);
+extern int (*set_ras_addr_hook) (struct sk_buff ** pskb,
+				 struct ip_conntrack * ct,
+				 enum ip_conntrack_info ctinfo,
+				 unsigned char **data,
+				 TransportAddress * addr, int count);
+extern int (*nat_rtp_rtcp_hook) (struct sk_buff ** pskb,
+				 struct ip_conntrack * ct,
+				 enum ip_conntrack_info ctinfo,
+				 unsigned char **data, int dataoff,
+				 H245_TransportAddress * addr,
+				 u_int16_t port, u_int16_t rtp_port,
+				 struct ip_conntrack_expect * rtp_exp,
+				 struct ip_conntrack_expect * rtcp_exp);
+extern int (*nat_t120_hook) (struct sk_buff ** pskb, struct ip_conntrack * ct,
+			     enum ip_conntrack_info ctinfo,
+			     unsigned char **data, int dataoff,
+			     H245_TransportAddress * addr, u_int16_t port,
+			     struct ip_conntrack_expect * exp);
+extern int (*nat_h245_hook) (struct sk_buff ** pskb, struct ip_conntrack * ct,
+			     enum ip_conntrack_info ctinfo,
+			     unsigned char **data, int dataoff,
+			     TransportAddress * addr, u_int16_t port,
+			     struct ip_conntrack_expect * exp);
+extern int (*nat_q931_hook) (struct sk_buff ** pskb, struct ip_conntrack * ct,
+			     enum ip_conntrack_info ctinfo,
+			     unsigned char **data, TransportAddress * addr,
+			     int idx, u_int16_t port,
+			     struct ip_conntrack_expect * exp);
+
+
+/****************************************************************************/
+static int set_addr(struct sk_buff **pskb,
+		    unsigned char **data, int dataoff,
+		    unsigned int addroff, u_int32_t ip, u_int16_t port)
+{
+	enum ip_conntrack_info ctinfo;
+	struct ip_conntrack *ct = ip_conntrack_get(*pskb, &ctinfo);
+	struct {
+		u_int32_t ip;
+		u_int16_t port;
+	} __attribute__ ((__packed__)) buf;
+	struct tcphdr _tcph, *th;
+
+	buf.ip = ip;
+	buf.port = htons(port);
+	addroff += dataoff;
+
+	if ((*pskb)->nh.iph->protocol == IPPROTO_TCP) {
+		if (!ip_nat_mangle_tcp_packet(pskb, ct, ctinfo,
+					      addroff, sizeof(buf),
+					      (char *) &buf, sizeof(buf))) {
+			if (net_ratelimit())
+				printk("ip_nat_h323: ip_nat_mangle_tcp_packet"
+				       " error\n");
+			return -1;
+		}
+
+		/* Relocate data pointer */
+		th = skb_header_pointer(*pskb, (*pskb)->nh.iph->ihl * 4,
+					sizeof(_tcph), &_tcph);
+		if (th == NULL)
+			return -1;
+		*data = (*pskb)->data + (*pskb)->nh.iph->ihl * 4 +
+		    th->doff * 4 + dataoff;
+	} else {
+		if (!ip_nat_mangle_udp_packet(pskb, ct, ctinfo,
+					      addroff, sizeof(buf),
+					      (char *) &buf, sizeof(buf))) {
+			if (net_ratelimit())
+				printk("ip_nat_h323: ip_nat_mangle_udp_packet"
+				       " error\n");
+			return -1;
+		}
+		/* ip_nat_mangle_udp_packet uses skb_make_writable() to copy
+		 * or pull everything in a linear buffer, so we can safely
+		 * use the skb pointers now */
+		*data = (*pskb)->data + (*pskb)->nh.iph->ihl * 4 +
+		    sizeof(struct udphdr);
+	}
+
+	return 0;
+}
+
+/****************************************************************************/
+static int set_h225_addr(struct sk_buff **pskb,
+			 unsigned char **data, int dataoff,
+			 TransportAddress * addr,
+			 u_int32_t ip, u_int16_t port)
+{
+	return set_addr(pskb, data, dataoff, addr->ipAddress.ip, ip, port);
+}
+
+/****************************************************************************/
+static int set_h245_addr(struct sk_buff **pskb,
+			 unsigned char **data, int dataoff,
+			 H245_TransportAddress * addr,
+			 u_int32_t ip, u_int16_t port)
+{
+	return set_addr(pskb, data, dataoff,
+			addr->unicastAddress.iPAddress.network, ip, port);
+}
+
+/****************************************************************************/
+static int set_sig_addr(struct sk_buff **pskb, struct ip_conntrack *ct,
+			enum ip_conntrack_info ctinfo,
+			unsigned char **data,
+			TransportAddress * addr, int count)
+{
+	struct ip_ct_h323_master *info = &ct->help.ct_h323_info;
+	int dir = CTINFO2DIR(ctinfo);
+	int i;
+	u_int32_t ip;
+	u_int16_t port;
+
+	for (i = 0; i < count; i++) {
+		if (get_h225_addr(*data, &addr[i], &ip, &port)) {
+			if (ip == ct->tuplehash[dir].tuple.src.ip &&
+			    port == info->sig_port[dir]) {
+				/* GW->GK */
+
+				/* Fix for Gnomemeeting */
+				if (i > 0 &&
+				    get_h225_addr(*data, &addr[0],
+						  &ip, &port) &&
+				    (ntohl(ip) & 0xff000000) == 0x7f000000)
+					i = 0;
+
+				DEBUGP
+				    ("ip_nat_ras: set signal address "
+				     "%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+				     NIPQUAD(ip), port,
+				     NIPQUAD(ct->tuplehash[!dir].tuple.dst.
+					     ip), info->sig_port[!dir]);
+				return set_h225_addr(pskb, data, 0, &addr[i],
+						     ct->tuplehash[!dir].
+						     tuple.dst.ip,
+						     info->sig_port[!dir]);
+			} else if (ip == ct->tuplehash[dir].tuple.dst.ip &&
+				   port == info->sig_port[dir]) {
+				/* GK->GW */
+				DEBUGP
+				    ("ip_nat_ras: set signal address "
+				     "%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+				     NIPQUAD(ip), port,
+				     NIPQUAD(ct->tuplehash[!dir].tuple.src.
+					     ip), info->sig_port[!dir]);
+				return set_h225_addr(pskb, data, 0, &addr[i],
+						     ct->tuplehash[!dir].
+						     tuple.src.ip,
+						     info->sig_port[!dir]);
+			}
+		}
+	}
+
+	return 0;
+}
+
+/****************************************************************************/
+static int set_ras_addr(struct sk_buff **pskb, struct ip_conntrack *ct,
+			enum ip_conntrack_info ctinfo,
+			unsigned char **data,
+			TransportAddress * addr, int count)
+{
+	int dir = CTINFO2DIR(ctinfo);
+	int i;
+	u_int32_t ip;
+	u_int16_t port;
+
+	for (i = 0; i < count; i++) {
+		if (get_h225_addr(*data, &addr[i], &ip, &port) &&
+		    ip == ct->tuplehash[dir].tuple.src.ip &&
+		    port == ntohs(ct->tuplehash[dir].tuple.src.u.udp.port)) {
+			DEBUGP("ip_nat_ras: set rasAddress "
+			       "%u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+			       NIPQUAD(ip), port,
+			       NIPQUAD(ct->tuplehash[!dir].tuple.dst.ip),
+			       ntohs(ct->tuplehash[!dir].tuple.dst.u.udp.
+				     port));
+			return set_h225_addr(pskb, data, 0, &addr[i],
+					     ct->tuplehash[!dir].tuple.dst.ip,
+					     ntohs(ct->tuplehash[!dir].tuple.
+						   dst.u.udp.port));
+		}
+	}
+
+	return 0;
+}
+
+/****************************************************************************/
+static int nat_rtp_rtcp(struct sk_buff **pskb, struct ip_conntrack *ct,
+			enum ip_conntrack_info ctinfo,
+			unsigned char **data, int dataoff,
+			H245_TransportAddress * addr,
+			u_int16_t port, u_int16_t rtp_port,
+			struct ip_conntrack_expect *rtp_exp,
+			struct ip_conntrack_expect *rtcp_exp)
+{
+	struct ip_ct_h323_master *info = &ct->help.ct_h323_info;
+	int dir = CTINFO2DIR(ctinfo);
+	int i;
+	u_int16_t nated_port;
+
+	/* Set expectations for NAT */
+	rtp_exp->saved_proto.udp.port = rtp_exp->tuple.dst.u.udp.port;
+	rtp_exp->expectfn = ip_nat_follow_master;
+	rtp_exp->dir = !dir;
+	rtcp_exp->saved_proto.udp.port = rtcp_exp->tuple.dst.u.udp.port;
+	rtcp_exp->expectfn = ip_nat_follow_master;
+	rtcp_exp->dir = !dir;
+
+	/* Lookup existing expects */
+	for (i = 0; i < H323_RTP_CHANNEL_MAX; i++) {
+		if (info->rtp_port[i][dir] == rtp_port) {
+			/* Expected */
+
+			/* Use allocated ports first. This will refresh
+			 * the expects */
+			rtp_exp->tuple.dst.u.udp.port =
+			    htons(info->rtp_port[i][dir]);
+			rtcp_exp->tuple.dst.u.udp.port =
+			    htons(info->rtp_port[i][dir] + 1);
+			break;
+		} else if (info->rtp_port[i][dir] == 0) {
+			/* Not expected */
+			break;
+		}
+	}
+
+	/* Run out of expectations */
+	if (i >= H323_RTP_CHANNEL_MAX) {
+		if (net_ratelimit())
+			printk("ip_nat_h323: out of expectations\n");
+		return 0;
+	}
+
+	/* Try to get a pair of ports. */
+	for (nated_port = ntohs(rtp_exp->tuple.dst.u.udp.port);
+	     nated_port != 0; nated_port += 2) {
+		rtp_exp->tuple.dst.u.udp.port = htons(nated_port);
+		if (ip_conntrack_expect_related(rtp_exp) == 0) {
+			rtcp_exp->tuple.dst.u.udp.port =
+			    htons(nated_port + 1);
+			if (ip_conntrack_expect_related(rtcp_exp) == 0)
+				break;
+			ip_conntrack_unexpect_related(rtp_exp);
+		}
+	}
+
+	if (nated_port == 0) {	/* No port available */
+		if (net_ratelimit())
+			printk("ip_nat_h323: out of RTP ports\n");
+		return 0;
+	}
+
+	/* Modify signal */
+	if (set_h245_addr(pskb, data, dataoff, addr,
+			  ct->tuplehash[!dir].tuple.dst.ip,
+			  (port & 1) ? nated_port + 1 : nated_port) == 0) {
+		/* Save ports */
+		info->rtp_port[i][dir] = rtp_port;
+		info->rtp_port[i][!dir] = nated_port;
+	} else {
+		ip_conntrack_unexpect_related(rtp_exp);
+		ip_conntrack_unexpect_related(rtcp_exp);
+		return -1;
+	}
+
+	/* Success */
+	DEBUGP("ip_nat_h323: expect RTP %u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+	       NIPQUAD(rtp_exp->tuple.src.ip),
+	       ntohs(rtp_exp->tuple.src.u.udp.port),
+	       NIPQUAD(rtp_exp->tuple.dst.ip),
+	       ntohs(rtp_exp->tuple.dst.u.udp.port));
+	DEBUGP("ip_nat_h323: expect RTCP %u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+	       NIPQUAD(rtcp_exp->tuple.src.ip),
+	       ntohs(rtcp_exp->tuple.src.u.udp.port),
+	       NIPQUAD(rtcp_exp->tuple.dst.ip),
+	       ntohs(rtcp_exp->tuple.dst.u.udp.port));
+
+	return 0;
+}
+
+/****************************************************************************/
+static int nat_t120(struct sk_buff **pskb, struct ip_conntrack *ct,
+		    enum ip_conntrack_info ctinfo,
+		    unsigned char **data, int dataoff,
+		    H245_TransportAddress * addr, u_int16_t port,
+		    struct ip_conntrack_expect *exp)
+{
+	int dir = CTINFO2DIR(ctinfo);
+	u_int16_t nated_port = port;
+
+	/* Set expectations for NAT */
+	exp->saved_proto.tcp.port = exp->tuple.dst.u.tcp.port;
+	exp->expectfn = ip_nat_follow_master;
+	exp->dir = !dir;
+
+	/* Try to get same port: if not, try to change it. */
+	for (; nated_port != 0; nated_port++) {
+		exp->tuple.dst.u.tcp.port = htons(nated_port);
+		if (ip_conntrack_expect_related(exp) == 0)
+			break;
+	}
+
+	if (nated_port == 0) {	/* No port available */
+		if (net_ratelimit())
+			printk("ip_nat_h323: out of TCP ports\n");
+		return 0;
+	}
+
+	/* Modify signal */
+	if (set_h245_addr(pskb, data, dataoff, addr,
+			  ct->tuplehash[!dir].tuple.dst.ip, nated_port) < 0) {
+		ip_conntrack_unexpect_related(exp);
+		return -1;
+	}
+
+	DEBUGP("ip_nat_h323: expect T.120 %u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+	       NIPQUAD(exp->tuple.src.ip), ntohs(exp->tuple.src.u.tcp.port),
+	       NIPQUAD(exp->tuple.dst.ip), ntohs(exp->tuple.dst.u.tcp.port));
+
+	return 0;
+}
+
+/****************************************************************************
+ * This conntrack expect function replaces ip_conntrack_h245_expect()
+ * which was set by ip_conntrack_helper_h323.c. It calls both
+ * ip_nat_follow_master() and ip_conntrack_h245_expect()
+ ****************************************************************************/
+static void ip_nat_h245_expect(struct ip_conntrack *new,
+			       struct ip_conntrack_expect *this)
+{
+	ip_nat_follow_master(new, this);
+	ip_conntrack_h245_expect(new, this);
+}
+
+/****************************************************************************/
+static int nat_h245(struct sk_buff **pskb, struct ip_conntrack *ct,
+		    enum ip_conntrack_info ctinfo,
+		    unsigned char **data, int dataoff,
+		    TransportAddress * addr, u_int16_t port,
+		    struct ip_conntrack_expect *exp)
+{
+	struct ip_ct_h323_master *info = &ct->help.ct_h323_info;
+	int dir = CTINFO2DIR(ctinfo);
+	u_int16_t nated_port = port;
+
+	/* Set expectations for NAT */
+	exp->saved_proto.tcp.port = exp->tuple.dst.u.tcp.port;
+	exp->expectfn = ip_nat_h245_expect;
+	exp->dir = !dir;
+
+	/* Check existing expects */
+	if (info->sig_port[dir] == port)
+		nated_port = info->sig_port[!dir];
+
+	/* Try to get same port: if not, try to change it. */
+	for (; nated_port != 0; nated_port++) {
+		exp->tuple.dst.u.tcp.port = htons(nated_port);
+		if (ip_conntrack_expect_related(exp) == 0)
+			break;
+	}
+
+	if (nated_port == 0) {	/* No port available */
+		if (net_ratelimit())
+			printk("ip_nat_q931: out of TCP ports\n");
+		return 0;
+	}
+
+	/* Modify signal */
+	if (set_h225_addr(pskb, data, dataoff, addr,
+			  ct->tuplehash[!dir].tuple.dst.ip,
+			  nated_port) == 0) {
+		/* Save ports */
+		info->sig_port[dir] = port;
+		info->sig_port[!dir] = nated_port;
+	} else {
+		ip_conntrack_unexpect_related(exp);
+		return -1;
+	}
+
+	DEBUGP("ip_nat_q931: expect H.245 %u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+	       NIPQUAD(exp->tuple.src.ip), ntohs(exp->tuple.src.u.tcp.port),
+	       NIPQUAD(exp->tuple.dst.ip), ntohs(exp->tuple.dst.u.tcp.port));
+
+	return 0;
+}
+
+/****************************************************************************
+ * This conntrack expect function replaces ip_conntrack_q931_expect()
+ * which was set by ip_conntrack_helper_h323.c.
+ ****************************************************************************/
+static void ip_nat_q931_expect(struct ip_conntrack *new,
+			       struct ip_conntrack_expect *this)
+{
+	struct ip_nat_range range;
+
+	if (this->tuple.src.ip != 0) {	/* Only accept calls from GK */
+		ip_nat_follow_master(new, this);
+		goto out;
+	}
+
+	/* This must be a fresh one. */
+	BUG_ON(new->status & IPS_NAT_DONE_MASK);
+
+	/* Change src to where master sends to */
+	range.flags = IP_NAT_RANGE_MAP_IPS;
+	range.min_ip = range.max_ip = new->tuplehash[!this->dir].tuple.src.ip;
+
+	/* hook doesn't matter, but it has to do source manip */
+	ip_nat_setup_info(new, &range, NF_IP_POST_ROUTING);
+
+	/* For DST manip, map port here to where it's expected. */
+	range.flags = (IP_NAT_RANGE_MAP_IPS | IP_NAT_RANGE_PROTO_SPECIFIED);
+	range.min = range.max = this->saved_proto;
+	range.min_ip = range.max_ip =
+	    new->master->tuplehash[!this->dir].tuple.src.ip;
+
+	/* hook doesn't matter, but it has to do destination manip */
+	ip_nat_setup_info(new, &range, NF_IP_PRE_ROUTING);
+
+      out:
+	ip_conntrack_q931_expect(new, this);
+}
+
+/****************************************************************************/
+static int nat_q931(struct sk_buff **pskb, struct ip_conntrack *ct,
+		    enum ip_conntrack_info ctinfo,
+		    unsigned char **data, TransportAddress * addr, int idx,
+		    u_int16_t port, struct ip_conntrack_expect *exp)
+{
+	struct ip_ct_h323_master *info = &ct->help.ct_h323_info;
+	int dir = CTINFO2DIR(ctinfo);
+	u_int16_t nated_port = port;
+	u_int32_t ip;
+
+	/* Set expectations for NAT */
+	exp->saved_proto.tcp.port = exp->tuple.dst.u.tcp.port;
+	exp->expectfn = ip_nat_q931_expect;
+	exp->dir = !dir;
+
+	/* Check existing expects */
+	if (info->sig_port[dir] == port)
+		nated_port = info->sig_port[!dir];
+
+	/* Try to get same port: if not, try to change it. */
+	for (; nated_port != 0; nated_port++) {
+		exp->tuple.dst.u.tcp.port = htons(nated_port);
+		if (ip_conntrack_expect_related(exp) == 0)
+			break;
+	}
+
+	if (nated_port == 0) {	/* No port available */
+		if (net_ratelimit())
+			printk("ip_nat_ras: out of TCP ports\n");
+		return 0;
+	}
+
+	/* Modify signal */
+	if (set_h225_addr(pskb, data, 0, &addr[idx],
+			  ct->tuplehash[!dir].tuple.dst.ip,
+			  nated_port) == 0) {
+		/* Save ports */
+		info->sig_port[dir] = port;
+		info->sig_port[!dir] = nated_port;
+
+		/* Fix for Gnomemeeting */
+		if (idx > 0 &&
+		    get_h225_addr(*data, &addr[0], &ip, &port) &&
+		    (ntohl(ip) & 0xff000000) == 0x7f000000) {
+			set_h225_addr_hook(pskb, data, 0, &addr[0],
+					   ct->tuplehash[!dir].tuple.dst.ip,
+					   info->sig_port[!dir]);
+		}
+	} else {
+		ip_conntrack_unexpect_related(exp);
+		return -1;
+	}
+
+	/* Success */
+	DEBUGP("ip_nat_ras: expect Q.931 %u.%u.%u.%u:%hu->%u.%u.%u.%u:%hu\n",
+	       NIPQUAD(exp->tuple.src.ip), ntohs(exp->tuple.src.u.tcp.port),
+	       NIPQUAD(exp->tuple.dst.ip), ntohs(exp->tuple.dst.u.tcp.port));
+
+	return 0;
+}
+
+/****************************************************************************/
+static int __init init(void)
+{
+	BUG_ON(set_h245_addr_hook != NULL);
+	BUG_ON(set_h225_addr_hook != NULL);
+	BUG_ON(set_sig_addr_hook != NULL);
+	BUG_ON(set_ras_addr_hook != NULL);
+	BUG_ON(nat_rtp_rtcp_hook != NULL);
+	BUG_ON(nat_t120_hook != NULL);
+	BUG_ON(nat_h245_hook != NULL);
+	BUG_ON(nat_q931_hook != NULL);
+
+	set_h245_addr_hook = set_h245_addr;
+	set_h225_addr_hook = set_h225_addr;
+	set_sig_addr_hook = set_sig_addr;
+	set_ras_addr_hook = set_ras_addr;
+	nat_rtp_rtcp_hook = nat_rtp_rtcp;
+	nat_t120_hook = nat_t120;
+	nat_h245_hook = nat_h245;
+	nat_q931_hook = nat_q931;
+
+	DEBUGP("ip_nat_h323: init success\n");
+	return 0;
+}
+
+/****************************************************************************/
+static void __exit fini(void)
+{
+	set_h245_addr_hook = NULL;
+	set_h225_addr_hook = NULL;
+	set_sig_addr_hook = NULL;
+	set_ras_addr_hook = NULL;
+	nat_rtp_rtcp_hook = NULL;
+	nat_t120_hook = NULL;
+	nat_h245_hook = NULL;
+	nat_q931_hook = NULL;
+	synchronize_net();
+}
+
+/****************************************************************************/
+module_init(init);
+module_exit(fini);
+
+MODULE_AUTHOR("Jing Min Zhao <zhaojingmin@users.sourceforge.net>");
+MODULE_DESCRIPTION("H.323 NAT helper");
+MODULE_LICENSE("GPL");