cannot put DTMF when I call

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Feb 6th, 2008
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I use Call Manager and have a voice gateway. They are relyed by SIP trunk.

So When I call from the Call Manager to external call, there are an IVR in the called number.So i have to put many digit.

But the problem is that I cannot put the digit.

What is the problem?

The schema is :

CCM <-IP SIP Trunk -> Voice Gw <- E&M -> Router <-IP H323-> Voip Call

Thank you

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rhugo Wed, 02/06/2008 - 08:02
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What happens when you try to enter the first digit? Can you send me a copy of your config on the voice gateway?

Jaime Valencia Wed, 02/06/2008 - 12:00
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do you have configured the DMTF relay for NTE and sip-notify on the applicable dial-peers

in order for the GW to relay the DTMFs you need to configure it on the dial-peers and also what kind of DTMF is going to be relayed


connect101 Wed, 02/06/2008 - 20:46
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The trunk with the call manager 5 is a SIP.

The dtmf preference is RFC 2833.

And in the gateway router is rtp-nte, that is RFC2833 too.

Should I replace it with sip-notify?

connect101 Wed, 02/06/2008 - 20:49
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The phone is a 7971G. With a 7911G I can use the dtmf, i can enter digits when the menu ask me.

But with the 7971G, I just hear a beep in the phone when I enter the digit menu.

Many Thanks.


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