CUBE & CUE DTMF Issue

[mmrkoci92]

Hi,

I have the following call flow:

PSTN - CUBE - CUE

on call leg between provider and CUBE I have g711alaw with dtmf in band, on call leg between CUBE and CUE I have g711ulaw and dtmf relay sip notify configured.

The call connects and transcoder is being invoked for alaw to ulaw but DTMF is not being passed from PSTN to CUE.

I did packet capture and I see DTMF arriving as inband voice signals to CUBE, so it looks like it's issue on my end.

I have attached sh run, and debug ccsip messages. I really dont know why this would not work.

Appriciate any help.

radio-cme#sh dspfarm profile 1
Dspfarm Profile Configuration

Profile ID = 1, Service =Universal TRANSCODING, Resource ID = 1
Profile Service Mode : Non Secure
Profile Admin State : UP
Profile Operation State : ACTIVE
Application : CUBE Status : ASSOCIATED
Resource Provider : FLEX_DSPRM Status : UP
Total Number of Resources Configured : 16
Total Number of Resources Available : 16
Total Number of Resources Out of Service : 0
Total Number of Resources Active : 0
Codec Configuration: num_of_codecs:5
Codec : pass-through, Maximum Packetization Period : 0
Codec : g711ulaw, Maximum Packetization Period : 30
Codec : g711alaw, Maximum Packetization Period : 30
Codec : g729ar8, Maximum Packetization Period : 60
Codec : g729abr8, Maximum Packetization Period : 60

[Scott Leport]

Hi there,

According to the configs you have supplied, you have no DTMF relay settings configured on what looks like your inbound dial-peers (dial-peers 100 and 101).

Can you try adding the DTMF relay for rtp-nte on these dial-peers and test again please?

Good luck!

Scott

[mmrkoci92]

Hi Scott,

thanks for your reply. I have tried that but the result is the same.

Dont think it made a difference, debugs look exactly the same.

BR,

Matija

[Scott Leport]

Hi Matija,

You could try adding sip-notify to the two incoming dial-peers in addition to the rtp-nte.

If that doesn't work, consider some of the advice in this thread:

https://community.cisco.com/t5/ip-telephony-and-phones/cue-dtmf-issue/td-p/1987789

Regards,

Scott

[mmrkoci92]

Hi Scott, yeah I tried that, and I saw this thread before, unfortunately none of the suggestions there works for me.

The problem in that thread turned out to be with provider, I would also like it if the problem is with provider, however when I do tcp dump on CUBE, on inbound interface to which provider is connected, I see digits arrive in RTP stream. So provider is sending in band DTMF to CUBE. From that I conclude CUBE is not reading those and transcoding them to sip notify and sending to CUE.

thanks for your help.

[Scott Leport]

Hi

Do you still have the issue? Would you be able to replicate the issue and provide a packet capture / tcp dump of your test here?

Scott

[mmrkoci92]

Hi Scott, I solved the issue by configuring Cisco Unity express for rtp nte instead of sip notify. I don't have any experience with CUE, so at first I didn't know this is possible, but then I find out in some community post that it should support both, and I just changed it in CLI. I think CUBE can't transcode from in band to out of band like sip info or sip notify.

Thanks,

Matija

[Scott Leport]

Ah ok, so you changed the dial-peer towards the CUE?
Fair enough, glad you got it working.