I currently have a VoIP SIP PBX (asterisk based). For communication with a specific trunk i need the p-asserted-identity header to be rewritten to a specific format. This is not possible within asterisk, so i need to setup a very simple session border controller.
Asterisk PBX <> SBC (rewrites header) <> Trunk.
I have understanding of SIP, but no experience in setting up a SBC.
Who can help me setup an SBC?