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2020 Apr 17
1
RFC4733 (2833) payload during early audio 183?
Hi Gang
Not a specific Asterisk Question.
But I wonder, if the called party replies with 183 + SDP indicating
support for telephony-event.
Should the caller be able to send DTFM Tones?
Swiss Railways uses an IVR that kicks in before the call is answered.
So far I have found no SIP Phone which would allow sending RFC4733
during the early audio phase (so I cannot test if Asterisk
would forward