Hello, As I know, the command "dtmf-relay rtp-nte digit-drop" when using RFC2833 on one side of CUBE, and Out of Band DTMF types on the other side.
But somehow that does not work in my case. Here are my CUBE dial-peer that are configured: dial-peer voice 10 voip description to CUCM translation-profile incoming 335 destination-pattern ^[1247]...$ session protocol sipv2 session target ipv4:172.16.4.121 incoming called-number [358]... dtmf-relay sip-kpml no vad ! dial-peer voice 11 voip description to CUCME destination-pattern ^[358]... voice-class sip dtmf-relay force rtp-nte voice-class sip early-offer forced session protocol sipv2 session target ipv4:177.1.254.3 incoming called-number ^[1247]...$ dtmf-relay rtp-nte digit-drop no vad So when the CUCME calls the CUCM (UCCX) the DTMF are not recognized by the UCCX. So I guess the "dtmf-relay rtp-nte digit-drop" command does not work.
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