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Duplicate DTMF for Video call from PSTN to Gateway

Dear All,

We have Cisco 3G router Cisco AS5400XM (BCM)  with one E1 PSTN line over it. We are facing duplicate DTMF issue for video calls only. (Audio calls works perfectly ).

Calls flow is comprehensive call flow

3g mobile - PSTN E1 -> 3G router -> CVP -> ICM -> CVP -> Call Manager

When ever user makes Video call to Contact Center via 3G mobile, call get connected and ask the user to enter user id. 

When user enter DTMF as 20126, CVP is getting as 2200112266.

This happen only while enter the user id and 3G video calls.

Please help us.

Thanks in advance.

Dial Peer configeration:

dial-peer voice 777 voip
 description ICM VRU label
 translation-profile incoming block
 service bootstrap
 session protocol sipv2
 session target sip-server
 incoming called-number 77777777T
 dtmf-relay rtp-nte sip-kpml
 codec g711ulaw

dial-peer voice 2002 voip
 destination-pattern 66702000
 session protocol sipv2
 session target ipv4:
 voice-class codec 1
 voice-class sip profiles 1
 dtmf-relay rtp-nte
 no vad

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