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Edson Vuma
Beginner

Apparent Codec Issues with SIP Trunk

Hi all,

 

The scenario I have is:

A normal user must call to a PSTN Number and this call must go to a far-end device for processing (IVR or something like).

 

Voice GW --> SIP --> CUCM --> SIP Trunk --> Far-End Device

 

I configured the trunk and all related settings.

The user can successfully make the call and it reaches the far-end device but after around 10 seconds, the call drops.

 

I'm interacting with the guy responsible for the far-end device and he sent me this from his log files:

 

- 196.43... is the public IP associated with CUCM

- 172.21... is the far-end internal IP

- 13.95... is the public IP of the far-end device

- 0025821... is the number pattern number for the SIP Trunk

- 82660.... is my mobile number that I'm using for testing.

 

On his side, he says that he has G.711alaw configured.

 

I also have it configured on MTP Preferred Originating Codec

 

But its still giving me this error.

 

I also created a new Region, and ordered the codecs on a custom list. It shows like this:

codecs.PNG

 

Region.PNG

 

Any help why my CUCM is giving this "488 Not Acceptable Media" error?

Warm regards

 

 

-- Regards Edson Vuma
2 REPLIES 2
Edson Vuma
Beginner

logfile.PNG

-- Regards Edson Vuma

you need to paste the gateway logs, or at the very least the content of the SDPs from all the devices

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