Caller ID Issues W/PJSIP Extensions

I am experiencing an issue with PJSIP extensions and the FOP2 flash operator panel and was wondering if anyone can shed some light on it. The problem is that the PJSIP extensions do not show CID information of the call an extension is currently on, or of any calls that are ringing any of those extensions. When the call is answered, the extension on the panel does turn orange indicating they are on a call (see screenshot below) but with no CID info.

If I perform a “service fop2 restart” in SSH, it will start working but only for a few hours before the PJSIP extension will again show no CID info. I do not have this issue with CHAN_SIP extensions. All of these PJSIP extensions were setup originally as CHAN_SIP but then converted to PJSIP.

It seems it has something to do with extensions that have a desktop phone registered (in this case all Yealink T46G/S models). If I unplug the desktop phones and only have softphones registered to an extension, it will be fine.

Has anyone else had this issue? If so, have you found a fix?


  • YES - this is the biggest issue we face when deploying FOP2 to clients. I find a service stop and start fixes it, for a while. I hope that Nicolás can find a real fix!!

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