Configuration of SIP DTMF with a CUCM 6.1

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Aug 1st, 2008
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Hi all,

We are facing a problem with the interconnection between GSM voice gateway and a CUCM 6.1 server. One of our call center number is a GSM number; so we put a GSM sim card in a GSM voice gateway; but when you dial that number you have the welcome prompt and when you dial 1 for French or 2 for English and the CUCM does not interpret this digit. We created a SIP trunk between the GSM voice gateway and the call manager. Is that the correct procedure or do we need to go through a Cisco Voice gateway? Can someone send the procedure of how do this configuration?


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irisrios Thu, 08/07/2008 - 10:55
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CCM 6.x is recommended to keep MTP Required check box disabled. SIP end users can not receive calls from ip phones connected to CCM 6.1.

Configuring SIP DTMF Features

SIP DTMF Features per IOS release:


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