> Different SDP in 183 and 200_OK is a protocol violation > or implementation dependent?
>From an RFC perspective, doing it does not work since the 200's SDP MUST be >ignored. However sending a different SDP is not a protocol violation of RFC >3261 since it is not an offer or updated answer; it is an SDP that MUST be >ignored. However vendors that still do not support forking proxies, UPDATE, and RFC 3262 occasionally request their partners to send the modified SDP within INVITE 18x/2xx and treat it as an updated answer (or new offer) to avoid their limitation from causing a poor customer experience. _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
