Analog line call Issue

[Bahlul Guliyev]

Hello All,

When I call from analog line to PSTN, call is going out normally.

But after IVR telling me to dial extension number I can't dial.

Regards

Bahlul

[zdesignstudio]

Can you describe the call flow? Is this CUCM, CME, etc. Are you having issues with DTMF calling out to other organizations or is the issue with calling in to your IVR?

Can you verify the dtmf config on the outbound dial peer.

[Bahlul Guliyev]

Hello,

This is CME version 9.1.

Call flow :  3905 IP Phone -> CME FXO Port -> PSTN 

When I call PSTN number call works fine. But when I call PSTN number, and after this IVR telling me to dial extension number, I'm dialing but there is no result. I think that I can't send digits to IVR.

Regards

Bahlul

[Sreekanth Narayanan]

The DTMF may not be going from your phone to the PSTN, causing the issue. What is the firmware running on the phone?

Can you send a show run of the router as well as the following debugs for a call?

debug voip ccapi inout

debug voip vtsp session

debug voip vtsp default

Another test that you can do is to call out to a landline or mobile phone using the FXO, and then press digits on the 3905 phone. Check if you can hear any digits on the landline/mobile.

[Bahlul Guliyev]

Hello Sreekanth,

I attached the debug and configuration files.

I did test as you said, called out a landline and then pressed digits on the phone. But I didn't hear sound.

regards

Bahlul

[zdesignstudio]

The outgoing dial peers need to have dtmf added to them.

[Bahlul Guliyev]

How to add dtmf to POTS dial-peer?

Regards

Bahlul

[Bahlul Guliyev]

With phone model 7962 everything works fine. But with 3905 it is not working normally. Sometimes when calling internal numbers I can't hear any sound, but opposite side hearing me. How you think is it depends on firmware?

Regards

Bahlul 

[Sreekanth Narayanan]

So that isolates the issue to the 3905. Looks like the phone isn't sending the right payload or not sending dtmf as it may not have been negotiated itself.

I note that you have configured all your 3905 pools as dtmf-relay rtp-nte and sip-notify. We now need the debug voip ccapi inout

debug ccsip message

debug voip rtp session named-events

for the call made from the 3905 so we can see what is getting negotiated. 

[Jorge Armijo]

Hey Guys,

That's a problem with 3905 firmware, please upgrade firmware to 9.4(1), which has the payload issue fixed.

HTH

~jorge

[Bahlul Guliyev]

Hello Jorge,

I've changed the firmware but there is no result. Still when I call PSTN number call works fine. But when I call PSTN number, and after this IVR telling me to dial extension number, I'm dialing but there is no result. I think that I can't send digits to IVR

Regards

Bahlul

[Bahlul Guliyev]

Hello Sreekanth,

I checked the support forums of cisco, and everyone telling that the problem in firmware file. But now looking for it , but can't find it.

[Sreekanth Narayanan]

Hey,

The firmware is located here: http://software.cisco.com/download/release.html?mdfid=283734772&softwareid=282074288&release=9.4(1)&relind=AVAILABLE&rellifecycle=&reltype=latest

[Bahlul Guliyev]

Many thanks Sreekanth,

I downloaded it.

[Bahlul Guliyev]

Hi Sreekanth,

I solved the problem with two way RTP stream. Now the problem with PSTN calling couldn't resolve.

"When I call PSTN number call works fine. But when I call PSTN number, and after this IVR telling me to dial extension number, I'm dialing but there is no result. I think that I can't send digits to IVR"

Regards

Bahlul