Hello I have tested the codec iLBC and found that PjSip does mismatch RFC 3264 for dynamical payload types (all types). According the RFC 3264 (section 6.1 Unicast Stream ) http://tools.ietf.org/html/rfc3264 In the case of RTP, if a particular codec was referenced with a specific payload type number in the offer, that same payload type number SHOULD be used for that codec in the answer. Even if the same payload type number is used, the answer MUST contain rtpmap attributes to define the payload type mappings for dynamic payload types, and SHOULD contain mappings for static payload types. Details you can find in attached log. Sip client one Capanga - IP 10.0.0.145 Sip client two dialer based on pjproject ver 1.8.5 - IP 10.0.0.151 Server Asterisk - IP 10.0.0.122 payload for codec iLBC in invite from 10.0.0.145 = 98 payload for codec iLBC in 200 OK from pjproject = 109 (should be same as in invite 98) Any suggestion for solving this problem? Best regards, Dzmitry.
