Remove a Codec

This rule changes the contact in the SDP to the value contained in the Contact header.

sip-manipulation
        name                           removeCodec
        description                    remove G711 codec if it exists
        mime-sdp-rule
                name                           removeCodec
                msg-type                       request
                methods                        INVITE
                action                         manipulate
                comparison-type                case-sensitive
                match-value
                new-value
                sdp-media-rule
                        name                       removeG711
                        media-type                 audio
                        action                     manipulate
                        comparison-type            case-sensitive
                        match-value
                        new-value
                        sdp-line-rule
                                name                   remove711
                                type                   m
                                action                 replace
                                comparison-type        pattern-rule
                                match-value            ^(audio [0-9]
                                                       {1,5} RTP.*)( [07]
                                                       \b)(.*)$
                                new-value              $1+$3
                        sdp-line-rule
                                name                   stripAttr
                                type                   a
                                action                 delete
                                comparison-type        pattern-rule
                                match-value            ^(rtpmap|fmtp):
                                                       [07]\b$
                                new-value