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New Member

sip mtp

Customer has CM in site A.   Site B has a cube router

The flow of voice is phone in Site B, to CM site A back to cube at site B.  I turned off mtp in the trunk connection in CM to the cube router and dtmf stopped working. In bound and outbound calls work but dtmf options for vm or don't work.

Bill

  • IP Telephony
3 REPLIES

Re: sip mtp

I dont think its an MTP issue, more of a dial peer issue at the cube.  Do you have a copy of the dial peer information from the Cube?

New Member

Re: sip mtp

dial-peer voice 9000 voip

translation-profile outgoing OutCallerId

destination-pattern 1..........

voice-class codec 1

no  voice-class sip localhost

no voice-class sip outbound-proxy

voice-class sip early-offer forced

voice-class sip profiles 2

session protocol sipv2

session target sip-server

dtmf-relay rtp-nte

!

dial-peer voice 860 voip

translation-profile incoming InwardAdd9

destination-pattern 86042689..

--More--                            voice-class codec 1

no voice-class sip outbound-proxy

session protocol sipv2

session target ipv4:192.168.110.11

incoming called-number 86042689..

dtmf-relay rtp-nte

fax protocol pass-through g711ulaw

!

dial-peer voice 9001 voip

translation-profile outgoing OutCallerId

destination-pattern ..........

voice-class codec 1

no  voice-class sip localhost

no voice-class sip outbound-proxy

voice-class sip early-offer forced

voice-class sip profiles 2

session protocol sipv2

session target sip-server

dtmf-relay rtp-nte

Re: sip mtp

I think it has to do with your DTMF relay setting.

https://supportforums.cisco.com/message/1171155#1171155

It could be a simple signal issue, but not sure without debugs.

dtmf-relay rtp-nte h245-signal might work.

http://www.cisco.com/en/US/docs/ios/12_2t/12_2t11/feature/guide/fth3dtmf.html

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