multiple "c=" SDP headers on outbound INVITE
A sends INVITE with SDP c=1.2.3.4 (public IP of another edge server) on the invite to internal interface on 3820. Using local-policy , SBC proxy that INVITE to B device which is an SBC via an outside interface. We want the whole SIP messaging bit run through our 3820 but the media should be between A and B.
However i noticed when our SBC sends INVITE to B, it has multiple "c=" lines first one with otuside interface IP of our SBC and second one which is A's IP address. How can we remove that and get SBC to send only one "c=" field with B's IP?