I am trying to setup a Trixbox conference. This is working OK but when call from PSTN then the DTMF digits are not recognized. If I call from a SCCP phone which is registered to our callmanager it is working without a problem.
This is my setup:
Phone on PSTN <POTS>3825 12.4(15)T9<dail-peerH323>Callmanager 6.1<SIP>Trixbox<SIP>Sip-phone
I am using G711ulaw as codec, I am not using the media termation point checkbox in CUCM. The trunk is not working anymore if I do that.
All DTMF settings are set to RFC2833 (on extensions, sip trunk on Trixbox and callmanager).The dial peer is configured:
dial-peer voice 1234 voip
progress_ind setup enable 3
voice-class codec 1
session target ipv4:(ip addr CUCM)
fax rate disable
Does anyone has an idea what the problem is?
Thanks in advance,