configuring DTMF tones

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Aug 22nd, 2006
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I have to configure DTMF in dial peer voip but I don't know which type have to configure rtp-nte or cisco-rtp.

What's the difference both them?

Thank you.


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gogasca Tue, 08/22/2006 - 07:02
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It will depend on your setup-

For CCM we use dtmf-relay h245-alphanumeric

since CCM only understand this type of DTMF as inbound.

For SIP we use Named Telephony Events (NTE), or RFC 2833 which is dtmf-relay rtp-nte

The cisco-rtp Forwards DTMF tones by using Real-Time Transport Protocol (RTP) with a Cisco proprietary payload type.

pacquaviva Tue, 08/22/2006 - 23:42
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thank you for your answer but I forget to tell you that I'm using CCME on Cisco 1760-V.

Is there difference with CCM configuration?

Regards, Paolo


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