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DTMF Tones Not Being Sent

anthonymd
Level 1
Level 1

‎02-27-2008 02:23 PM - edited ‎03-15-2019 09:07 AM

Hello,

We have CM 4.2 and an I3 server (SIP) for ACD and are having issues getting DTMF tones out our CMM blades to outside phones. When we dial them and the other end asks for an extension we are unable to enter any numbers from our phones. This only happens when logged into the I3 Client, our other phones work fine as well as sending the tones via the I3 Client keypad. Any help would be appreciated.

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a001b20043809
Level 1
Level 1

‎02-27-2008 03:25 PM

I don't know how this server (I3) run, but you can check the following issues:

Check the codec. Cisco CallManager Ver4 do SIP trunking only with G.711 codec.

Check if this server receive DTMF accordingly to the rfc2833

http://cisco.com/en/US/docs/voice_ip_comm/cucm/srnd/4x/42trunks.html#wp1049854

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