Archives : April-2020

RFC4733 (2833) Payload During Early Audio 183?

Posted April 17, 2020 by Benoit Panizzon & filed under Asterisk Users Comments: 1.

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 answer..

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