2010/3/20 Pranab Bohra <pranab.bo...@gmail.com>: > As per section 2.1 of rfc 3666, the softphone should open the rtp port > to receive early media when the gateway responds with 183 + SDP.
The problem is that some servers/gateways send first a 183 with SDP. The UAC receives the early media. But after a second (or less) the server sends a 180 and *stops* the RTP. If the UAC chooses to render the real audio (183) rather than the artificial ringing (180) then there will be no audio anymore (until the 200 arrive of course). This occurs with some phones and some servers. -- Iñaki Baz Castillo <i...@aliax.net> _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
