4. UA (phone), gateway or other hardware/software involved:
5. Your problem:
My Brekeke PBX and SIP server is integrated in a VoIP network that require a header in every SIP message.
Is it possible including a header in every SIP message?
Is there a field in the PBX configuration or the SIP server configuration, or is there a environment variable where I could define headers that are included in every SIP message?