Incoming calls with inband audio G.711 DTMF are not understood by the CUBE/CUCM/UCCX configuration.Ī) The carrier, as mentioned in (2) requires RFC 2833. Taking packet capture on the CUBE I can confirm using Wireshark that calls coming in using with RFC 2833 compliant DTMFs are handled properly by the CUBE/CUCM/UCCX configuration. CUBE fundamental and basic setup - DTMF relay: īut I yet haven't find a configuration which allows to support everything.ġ- The UCCX only accepts Out-Of-Band DTMFĢ- The CUCM is connected to an ITSP which requires RFC 2833 DTMF (so inband DTMF with DTMF information in the payload)ģ- Some rare people are dialing in to the Call Center number and sending inband audio G.711 DTMF (so inband DTMF with no DTMF information in the payload) There's a lot of documentation about in-band audio DTMF interworking with SIP including these, which I have already read:
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