Hi, a device is supposed to implement RFC 4733 for DTMF and a server implements RFC 2833. Should the server recognize the DTMF events sent by the device?
Unfortunatelly in my real case it doesn't work (DTMF's are not recognized by the server). The SDP sent by the device looks at follows: v=0' o=default 1266233979 1266233979 IN IP4 0.0.0.0' s=-' c=IN IP4 X.X.X.X' t=0 0' m=audio 32000 RTP/AVP 18 106 4 8 0' a=sendrecv' a=rtpmap:106 telephone-event/8000' a=fmtp:106 0-15' a=maxptime:90' And the SDP the server replies in 183 and 200 looks like: v=0' o=- 1685142089 1685142089 IN IP4 9.9.9.9' s=XXXXX' c=IN IP4 9.9.9.9' t=0 0' m=audio 21416 RTP/AVP 18 106' a=maxptime:90' a=fmtp:106 0-15' a=ptime:20' a=rtpmap:18 G729/8000' a=rtpmap:106 telephone-event/8000' a=sendrecv' Is there something wrong in this SDP negoziation? (I don't think so, but could be wrong). Also, it's not clear for me how a UA tells the peer UA that it would use RFC 4733 rather than RFC 2833. Any clarification about this please? Thanks a lot. -- 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
