DTMF does not function properly

[j.smith@sepidarsystem.com]

Hi

We have CUCM and UCCX telephony system and on our IVR we have DTMF problem. some times the number that is entered can be recognized and some times can't. I have set dtmf on my dial peers.

How can I solve the problem?

[George Sotiropoulos]

Hello,

Can you post the correspoding dial-peers' configuration? Are you using dtmf-relay sip-notify or rtp-nte?

Its worth trying the 'debug ccsip all' and check whether 'negotiated dtmf relay' exists on each leg to confirm that rtp-nte is negotiated.

George

[j.smith@sepidarsystem.com]

Thank you for your response.

Yes, I have set dtmf-relay h245-alphanumeric sip-notify rtp-nte cisco-rtp for my dial peers. The output of the command "debug ccsip all" the Negotiated DTMF relay contains  rtp-nte