IVR not accepting DTMF for the SIP DIDs when dialing any call center

[mohsin majeed]

Hi Dears,

In a project I have SIP and E1 trunk.

- When a user dials any call center or 800 or 9200 service numbers. After listening the greetings it is asked like to press 1 and 2 for the language selection or any other option. This ivr dialed digit have no effect.

- For E1, it is working fine with no issue.

need help

[vinodkewate]

Change your DTMF Signalling method on trunk to RFC 2833.

[mohsin majeed]

Thanks vinod for your reply

 i will be keep posting the result when visit the site

[mohsin majeed]

I tried with both DTMF methods (RFC 2833, OOB and RFC 2833) nothing happened :(

Also i selected Accept unsolicited notification from SIP security profile and reset the trunk.

Any other suggestion please

[Ayodeji Okanlawon]

Can you please attach your sh run. Can you also describe the elements in your call flow.

ie phone(sccp or sip)---cucm---sip--cube--sip--itsp ?

[mohsin majeed]

Hi,

sh run is attached

Call flow is same as

Phone SCCP/SIP (sip DID)--> CUCM (Siptrunk)-->cube-->sip--> ITSP

i tried with both phone config(sccp/sip), but same issue

[Ayodeji Okanlawon]

Hi,

Can you remove the following from your dial-peers

voice-class sip dtmf-relay force rtp-nte

Then enable the ff debugs and do another test call

debug voip ccapi inout

debug ccsip messages

Please attach the debugs and include the calling and called number

[mohsin majeed]

Hi,

i removed "voice-class sip dtmf-relay force rtp-nte" from all dialpeer

ccsip and ccapi debug is attached

Calling DID : 2835423

called number : 0907      ( 907 is saudi telecom service number)

[Ayodeji Okanlawon · Accepted solution]

Hi,

Here is the issue:

Your ITSP is using payload 97 for rtp-nte and cisco uses 101.

m=audio 48302 RTP/AVP 8 0 18 4 2 98 99 97

--

a=rtpmap:97 telephone-event/8000

a=fmtp:97 0-15

To resolve this please configure the following:

conf t:

rtp payload-type cisco-codec-fax-ack 98
rtp payload-type nte 97

[mohsin majeed]

can u please help me on this issue also

I remember you worked on "SIP/2.0 484 Address Incomplete" before with me

here is the detail

https://supportforums.cisco.com/discussion/12399606/call-forward-all-offnet-offnet-not-working

[mohsin majeed]

Dear Ayodeji,

You saved my life second time :)

simply love you

Thanks alot again