[Freeswitch-users] Force Inband DTMF Reception

[Adrian Worutowicz]

Hello,

For incoming calls, I want to receive DTMF inband.

FS receives INVITE and at certain stage sends 200 OK with a SDP section, which always contains :

a=rtpmap:101 telephone-event/8000 (what means 'DTMF in RTP metadata'). Indeed the DTMFs come via RTP.

I tried various FS configuration options to remove that line, without success.

How to do it? How to tell a gateway to send DTMFs inband ?

In advance thank you very, very much,
Adrian.




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