.

software/ors-amarisoft/config/enb.jinja2.cfg

 {#- XXX ORS -> provide defaults for: slave_instance_list -#}
 {#- XXX icell vs cell / iru vs ru everyhere + document it #}
 
+{#- defaults provide default values for parameters.
+    it should be kept in sync with "default" in json schemas  #}
+{%- set defaults = {
+      'cell': {
+        'pci':  1,
+        'tac':  "0x0001",
+      }
+    }
+%}
+
 {%- import 'lte.jinja2' as lte -%}
 
 {#- return value is json-encoded to workaround jinja2 macro-ret limitation. #}
@@ -68,16 +78,21 @@
 {%-   set _ = J(slave['_'])                                           %}
 {%-   do slave.update({'_': _})                                       %}
 {%-   if   'ru_type'   in _                                           %}
-{%-     do ru_dict.update({ref: slave})                               %}
+{%-     set iru = slave                                               %}
+{%-     do ru_dict.update({ref: iru})                                 %}
 {%-   elif 'cell_type' in _                                           %}
-{%-     do cell_dict.update({ref: slave})                             %}
+{%-     set icell = slave                                             %}
+{%-     for k, v in defaults['cell'].items()                          %}
+{%-       do _.setdefault(k, v)                                       %}
+{%-     endfor                                                        %}
+{%-     do cell_dict.update({ref: icell})                             %}
 {%-     set ru = _['ru']                                              %}
 {%-     if ru['ru_type'] not in ('ru_ref', 'ruincell_ref')            %}
 {#-       embedded ru definition -> expose it as `_<cell_ref>_ru`     #}
 {%-       do ru_dict.update({'_%s_ru' % ref: {
                 '_':                ru,
-                'slave_title':      '%s. RU' % slave['slave_title'],
-                'slave_reference':  slave['slave_reference'],
+                'slave_title':      '%s. RU' % icell['slave_title'],
+                'slave_reference':  icell['slave_reference'],
              }})                                                      %}
 {%-     endif                                                         %}
 {%-   else                                                            %}
@@ -139,7 +154,7 @@
 {%-     do dev_argv.append("dev%d=/dev/sdr%d@%d" % (len(dev_argv), link['sdr_dev'], link['sfp_port']))   %}
 {#      set cpri parameters to default              #}
 {%-     do link.setdefault('mapping', 'hw')         %}    XXX   <- should be preset set by ru?  (specific to ru?)
-{%-     do link.setdefault('mult',     16)          %}
+{%-     do link.setdefault('mult',     16)          %}    XXX   <- defaults
 {%-     do link.setdefault('rx_delay',  0)          %}
 {%-     do link.setdefault('tx_delay',  0)          %}
 {%-     do link.setdefault('tx_dbm',    0)          %}