> From: Jaiswal, Sanjiv > > 1) After offer / Answer negotiation . Modfying the session with new > offer where only port and IP address are changed. > then whether the version in new sdp is same or it will be incremented
The new SDP is not exactly the same as the previous SDP, so its version must be increased. > 2)The is onging audio session between the agents . Now the terminating > end wants to change from audio to video. Termination generates the > reinvite with addition m lines for new audio and video and previous > mline port set to zero (deletion of media). Peer on receiving the new > offer simply rejects the SDP with the ports of all the m-line set tp > Zero. > In such scenario whether the previous audio session exists or the > session is termination by sending BYE from the end point. The answer depends on whether the re-INVITE received a 2xx response or not. If the response to the re-INVITE is 2xx, then the changed SDP takes effect, and the previous audio session is ended (and there are no new media sessions). If the response to the re-INVITE is 4xx, then the changed SDP does not take effect, and the previous audio session continues. Dale _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
