FreeSWITCH has a module named CID Lookup (mod_cidlookup). We will leverage this module to connect it to the SuperCNAM endpoint and pull the Caller ID information inline with the call as it comes in.

CID Lookup Module Setup

  1. Edit the modules.conf.xml file (usually in the /etc/freeswitch/autoload_configs/ directory) and make sure there is a line like:
    <load module="mod_cidlookup"/>
  2. Edit the cidlookup.conf.xml file, (usually in the /etc/freeswitch/autoload_configs/ directory) and delete its content and put the following:
    <configuration name="cidlookup.conf" description="cidlookup Configuration">
       <param name="url" value = "${caller_id_number}"/>  
       <param name="cache" value="true"/>
       <param name="cache-expire" value="86400"/>
  3. Apply the changes. You can do it by restarting FreeSWITCH or load/reload de module.
    1. To restart the FreeSWITCH daemon, try service freeswitch restart if you are in a SystemV system or systemctl restart freeswitch if you are in a SystemD system.
    2. To load the module, inside fs_cli type load mod_cidlookup.
    3. To reload the module, inside fs_cli type reload mod_cidlookup.

Dialplan Configuration

  1. Add or edit a dialplan that executes at the very beginning of an incoming call. For example:
    <extension name="caller-details" continue="true" >
    <condition field="" expression="" break="never">
    <action application="set" data="caller_id_name = ${cidlookup(${caller_id_number})}" inline="true"/>
    <action application="set" data="effective_caller_id_name = ${caller_id_number}" inline="true"/>
    Optionally, you may want to put a pre_answer before the set lines.
  2. Restart FreeSwITCH daemon or inside fs_cli type reloadxml.