Forum Discussion
Teams with SBC no DTMF tones
We have an AudioCodes SBC connected to Teams. We have about 10 users on it currently and 5 team room systems. We cannot get DTMF tones to pass when calling from Teams. We've tested with webex and zo...
Jason Benway Is the problem still active ? i hat a similar issue at a customers and found a misconfiguration in the SDP and Codex-description. So do you have the initial INVITE from Teams to your SBC as a trace? the content of the SDP would be interersting. teams shoulf offer a
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
and the SBC should answer. And if you enter DTMF in the teams client, you should receive the DTMF as "inband RTP-data" with the Codec "101".
I can see that in my audiocodes Syslogs. Check this and if thats working, then Microsoft is not the problem here.
You SBC should be able so see that and forward it to the other side. maybe it has to transcode it.