I have a gateway reigstered, it is goip, i can call phones from it, can receive calls from it, but the call i receive has id 2001 which is the local id number in the switch, however goip sends the callerid in the header. Please check this thread, and let me know, if i can do it in fusionpbx.
[Freeswitch-users] adding In-Reply-To in sip header not working
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