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  1. Custom Provider Template Issues / Trunk Issues

    It's really strange - I am still troubleshooting this on and off. When I change the FromHostPart to CustomField then it does change the From header correctly, but the calls are then 403 forbidden. I can't seem to understand why but it is specifically that line in the template that breaks it. I...
  2. Custom Provider Template Issues / Trunk Issues

    Thanks, I have tried this and the FROM header is now displaying correctly. I am confirming with my provider if the issue is now on their side as the calls now have a 403 Forbidden on anything outbound.
  3. Custom Provider Template Issues / Trunk Issues

    Hi team, We are troubleshooting custom SIP From header rewriting in 3CX V20 Update 9 with an Aussie Broadband (NetSapiens) SIP trunk. Goal: We need the outbound SIP From header formatted as: sip:&lt;DID&gt;@AUTHID:5060<br> However, 3CX keeps rewriting it to...