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SIP H323 Trunk DTMF

Hi

We have a call flow as below:

CUCM --H323 Trunk--ISR4300--SIP Trunk---ITSP (PSTN)

 

The CUCM Users are able to make calls outside to PSTN but the DTMF wont work.

The things already done as troubleshooting:

1. MTP configuration on ISR4300 and register in CUCM.

2. MTP required checked in H323 Trunk on CUCM

3. On IOS SIP trunk, all dtmf options are configured (dtmf-relay rtp-nte sip-kpml sip-notify cisco-rtp h245-alphanumeric)

Here is the dial-peer towards ITSP:

dial-peer voice 200 voip
translation-profile outgoing ttx
destination-pattern 00T
session protocol sipv2
session target sip-server
voice-class sip bind control source-interface GigabitEthernet0/0/2
voice-class sip bind media source-interface GigabitEthernet0/0/2
dtmf-relay rtp-nte sip-kpml sip-notify
codec g711ulaw
no vad

 

Pls advise.

 

Saif

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