This is valid. It is not required that both ends send/receive using the same payload ID.
The payload id you send in an SDP is what you should expect to receive from the far end. Likewise the far-end should expect to receive the payload id it advertised in it's SDP. ________________________________ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Wednesday, September 07, 2005 12:58 PM To: SIP Implementors Cc: SIP IETF Subject: [Sip] SDP query Hi, Just want to know if following offer-answer exchange is correct, it has different dynamic payload types for DTMF and telephone events, is it necessary for both these to be same ? If they are not same, then how both parties will use these values to send telephone-events and DTMF digits. Offer: m: audio 8000 RTP/AVP 18 0 96 rtpmap: 18 G729/8000 rtpmap: 0 PCMU/8000 fmtp:96 0-15 rtpmap:96 telephone-event/8000 Answer m: audio 8000 RTP/AVP 18 0 96 97 rtpmap: 18 G729/8000 rtpmap: 0 PCMU/8000 fmtp:96 0-15 rtpmap:97 telephone-event/8000 Thanks, Udit _______________________________________________ Sip-implementors mailing list [email protected] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
