In the SDP response, if you can't do telephone-event, then you should do something like this (assumming you support g711u-law):
m=audio <yourport> RTP/AVP 0 a=sendrecv a=rtpmap: 0 PCMU/8000 So, your option 2 is correct. Regards, Attila Attila Sipos http://www.vegastream.com >> -----Original Message----- >> From: [EMAIL PROTECTED] >> [mailto:[EMAIL PROTECTED] Behalf Of >> Jayantheesh Sirmushnam - NPD, Chennai >> Sent: 02 December 2005 09:51 >> To: [email protected] >> Subject: [Sip-implementors] SDP Query regarding "telephone-event" >> negotiation >> >> >> Hi All, >> >> >> >> Alice's offer >> >> ========= >> >> v=0 >> >> o=jayanteeshs 2854 0 IN IP4 10.105.2.136 >> >> s=Voice Chat >> >> c=IN IP4 10.105.2.136 >> >> t=0 0 >> >> m=audio 7100 RTP/AVP 0 101 >> >> a=sendrecv >> >> a=rtpmap: 0 PCMU/8000 >> >> a=rtpmap: 101 telephone-event/8000 >> >> >> >> Here "telephone-event" is a dynamic payload. >> >> >> >> If Bob does not understand the "telephone-event" (i.e. it does not >> support the DTMF), what should he do?? >> I guess the following >> >> 1. Bob has to send 4xx error response >> >> 2. Send answer without the "telephone-event" in the SDP. >> >> >> >> Which should I follow?? >> >> >> >> Thanks and regards >> >> Jayanteeshs. >> >> >> >> _______________________________________________ >> Sip-implementors mailing list >> [email protected] >> http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors >> _______________________________________________ Sip-implementors mailing list [email protected] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
