No audio calling outside numbers - Cisco 2901

[paolonova]

HI all,

I have a Voip environment with a 2901 router. All internal calls are working fine. When I dial an external number (using the PSTN) I have no audio at all on both ends. The phones ring and the communication is established, but no voice. There is no firewall before the router.

Strange enough, I have another identical router in another site with a very similar configuration. This one is working fine, also with external calls through PSTN.

From the output of "show call active voice" on both routers I can see a little difference when calling the same number (say 0123456789). The working one has the full digits sequence in "OriginalCalledNumber" and "GwReceivedCalledNumber" whereas the other has just the number 9 which we use to pick up the line on both routers.

I have attached the router cfg and a small snapshot of the difference in show call active voice command.

hope you can help, thank you

[Ayodeji Okanlawon]

Can you please do a test call and send the following ..

debug voip ccapi inout..

please include calling and called number.

[paolonova]

Thank you Ayodeji

Calling number was 80990, Called number was 07875979728

output in attach

[Ayodeji Okanlawon]

Do you need to send the 9 outside?

Here is what I see that is sent out..

Can you also send the ff:

show voice dsp voice

Jan 20 12:17:55.695 GMT: //65433/A49B376B86B2/CCAPI/cc_api_display_ie_subfields:
   ccCallSetupRequest:
   cisco-username=80990
   ----- ccCallInfo IE subfields -----
   cisco-ani=80990
   cisco-anitype=0
   cisco-aniplan=0
   cisco-anipi=0
   cisco-anisi=1
   dest=07875979728

[paolonova]

No, I don't need to send the 9 out. If you look at the config attached in the first post, I have a couple of translation rules (REMOVE9_OUT).

Destination number looks correct... but I can't hear any voice.

[Ayodeji Okanlawon]

Please send the output of

show voice dsp voice

[paolonova]

Here you go.

Thanks

[Ayodeji Okanlawon]

Okay all your dsps look okay. I am sorry to bother you but we need more debugs,,

please send the ff:

debug isdn q931

and

sh diag

[paolonova]

You're not bothering at all. Thank you very much for your help!

Here's the output

[Ayodeji Okanlawon]

Can you try and configure port 0/0/1 and plug the cable on port 0/0/0 to it..The port 0/0/1 is shutdown at the moment so you need to do a no shut on it and configure the port like 0/0/0..

I just want to eliminate the possibility of a faulty BRI port. Does inbound call work?

[paolonova]

This is on a remote site and the persons there aren't skilled enough. I could try to instruct someone with pictures and try the other port. I'll try and let you know.

Incoming calls have exactly the same issue.

Thank you

[paolonova]

Dear Ayodeji, good morning

I asked t move the cable to ISDN BRI S/T 1 and I configured the dial-peer in order to test a phone call. Unfortunately I have the same behaviour (inbound and outbound). I can see traffic and call generated from output and the codec correctly negotiated in "show voice dsp voice".

I have asked to move the cable back to BRI0/0/0

Thank you

[Ayodeji Okanlawon]

Paolonova,

Sorry for my late response..

These issue to me look like a dsp issue. Although the output of show voice dsp voice looks okay. I will suggest you open a TAC case with cisco unless you have spare PVDM that you can put into the router.

[paolonova]

Will do. Thank you very much for your time.