CUE AA greeting dropout

[Nick.Britt_2]

Hi,

We have an intermittent issue (1 out of 5 calls) where the greeting that has been recorded randomly drops out. The WAV file itself is faultless (I have downloaded it to my PC and there is not loss or dropout on the actual file) and as mentioned this is intermittent at this stage this as has only been tested with internal calls.

There are no errors on any of the interfaces. CUE 7.2.2 is running on an AIM-CUE module within a 2851 we have the same script and configuration running on another site which does not have this affect.

Any help would be much appreciated, this is very strange one and I cant think where to start.

Cheers

[gmgarrian]

Is this happening only on calls originating from the pstn?  Does this happen for internal calls?

I've seen something similar and it was fixed by disabling vad on the dial peer.

[Nick.Britt_2]

Hi Gmgarrian,

We have only tested internal calls so far by simply calling the CTI route point (so no dial peers in place), the site office is not to keen on applying the system to external lines in its current state. Initially I thought this was a connectivity issue but after further investigation all connectivity has been confirmed and is error free.

Thanks

[gmgarrian]

With the AIM-CUE I assumed you were using CME for call processing.  What version of CUCM are you using?  The equivalent of "no vad" on CUCM is silence suppression and I believe it's a system wide setting.  What this feature does is when the system detects silence on the line it won't send any audio data in the packet in an attempt to minimize bandwidth.  The problem is that sometimes this causes CUCM or CME to think the call was disconnected and it drops the call.  Disabling this will avoid this issue.

I'm not saying this is what the problem is on your end, but it's something I would check.

Can you get any debug info on the dropped calls?

[Nick.Britt_2]

Hi gmgarrian,

Can I just clarify that the call is not actually dropped, the audio that has been recorded just appears to drop out the call does not disconnect.

could advise the debug to start with?

Thanks

[gmgarrian]

There is some good debuging info here:

http://www.cisco.com/en/US/products/sw/voicesw/ps5520/products_tech_note09186a008086592f.shtml

One other thing I thought of your licensing.  Do you have enough licensed ports to CUE?  I would assume that if you were out of ports the last concurrent call would fail and it wouldn't just drop the audio but it's something else to look at.