Thanks billsimon. for give me some hints. We are using FreePBX ver 13, and apparently the “Rewrite Contact” is not available under PJSIP , Tab Advanced. Maybe in new versions. This is our FreePBX
I had been reading the PJSIP.conf, but the parameter is not there, however in the file pjsip.endpoint.conf show the ext and the parameter “Rewrite Contact is there, but those are not trunks.
I had been reading and I am all mix up with this thread How to enable rtp_symmetric and rewrite_contact for pjsip Trunk? - #7 by DanielYK
But here show in the Web GUI of freePbx the parameter
I guess this screenshot is from a new FreePBX version.
I am scratching my head. Any advice will be great.
Daniel White