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msxfaq
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Joined Nov 11, 2016
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Re: Teams with SBC no DTMF tones
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.22KViews1like0Comments
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