[asterisk-users] RFC4733 (2833) payload during early audio 183?
benoit.panizzon at imp.ch
Fri Apr 17 03:39:59 CDT 2020
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 them) rendering the IVR unuseable. But the RFC itself
suggests that there is no restriction on which SDP (183 or 200) the
telephony-event is announced.
Mit freundlichen Grüssen
-Benoît Panizzon- @ HomeOffice und normal erreichbar
I m p r o W a r e A G - Leiter Commerce Kunden
Zurlindenstrasse 29 Tel +41 61 826 93 00
CH-4133 Pratteln Fax +41 61 826 93 01
Schweiz Web http://www.imp.ch
More information about the asterisk-users