Contact URI causing incomplete SIP calls. Where can I set this? (I have it working fine on a test PBX!)

[snazir (Shahin Nazir)]

@a0429 Pls check below link.

Contact URI User in SIP header

That GUI field is for the trunk registration, and you are looking to set it for the trunk endpoint. AFAIK, the only way to do this is by looking in the file pjsip.endpoint.conf to determine the trunk name and then editing the file pjsip.endpoint_custom_post.conf with: [trunk_name](+type=endpoint) ; sub actual trunk name between [] contact_user=MrGrinch