cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
1258
Views
15
Helpful
3
Replies

DTMF not working for outbound calls using Out-of-band

Peter Valdes
Participant
Participant

Hi,

 

DTMF fails on outbound calls with CUCM 11.5 -> SIP Trunk -> CUBE -> SIP ISP. I have a CUBE that works with both inbound/outbound calls. However when I place an outbound call to an external source through the SIP ISPI can't pass DTMF. Entered digits does is not recognized.

 

dial-peer voice 1 voip
description OUTGOING FROM CUBE TO ISP SIP
translation-profile outgoing ISP-SIP-OUTBOUND
destination-pattern .T
session protocol sipv2
session target sip-server
voice-class codec 10
voice-class sip profiles 1
dtmf-relay sip-info
fax protocol none

 

I use "dtmf-relay sip-info or sip-kpml" for Out-of-band on DTMF. When I place all dial-peer to "dtmf-relay rtp-nte", DTMF works perfect on outbound calls.

Is there a command I'm missing? I need Out-of-band setup for compliance.

 

Thanks

Peter Valdes

3 Replies 3

piyush aghera
Enthusiast
Enthusiast

Please give it a try by replacing "dtmf-relay sip-info"  to "dtmf-relay rtp-nte".

 

Here is a document reference for this:

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/voice/sip/configuration/15-mt/sip-config-15-mt-book/voi-sip-dtmf.html

jonathan.salter
Participant
Participant

Does the carrier accept the out of band DTMF?

 

Please remember to rate useful posts, click on the stars below.

Mohammed al Baqari
VIP Advisor VIP Advisor
VIP Advisor
No its not a command problem. It might be a DTMF mismatch, i.e. your ITSP
has DTMF rely set to rtp-nte and you are using oob dtmf relay which makes
it failing.

You need to use what your ITSP is using

**** remember to rate useful posts
Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community:

Recognize Your Peers