ContactStore Noise during playback

[ckhoo]

Hi,

We have installed a VM Pro on a external cisco server on win platform.

However, we encounter noise during playback on the contactstore recording. It happen intermittenly on 2nd or 3rd call when we try to do test call to troubleshoot.

We thought it's a server issue & we installed the VM Pro on a laptop PC but the noise is still there...like motorboard sound.

It happen to the contact store user when it is configured for recording.

IPO V1 chassis but upgraded to Rls 8.1. Contactstore 8.1 version too. IP1608 phone.

Do help to point to some possible causes as we are thinking of changing the VCM32 card(v1) but then it's only affecting the contactstore user.

Appreciate your help!!
Tks,
CK.

[ssaini]

First of all, there is no 8.1 version for Contact Store.

For last 3 years or so we have the same version as 7.8.16.

Hence, I am suspecting that you are running Contact Store on 7.8.16.

To isolate this issue, please change the recording path from VRL to mailbox and then see what the results are. This way we will be able to determine that the problem is with Contact Store OR Voicemail pro (please note that recording is done by VMPro).

If you are getting the same results with the Voicemail recordings then we are sure this is not a contact store issue.

And if No issues with the recording done on mailbox then Contact Store is at fault.

[laburu]

In the past there were issues reported when due to gains issues.

I guess that you are using analog lines and that you have performed impedance match on those, haven´t you?

Then the next step would be to play with the VCM tab values, Echo and Noise are teh ones taht can affect such issues.

You will need to reboot everytime are changed.

[markgallagher]

Also download one of the 'affected' files from the ContactStore listing and then play it back locally. Would help exclude whether the issue is only when played back from the ContactStore interface or whether the noise is actually part of the recorded file.

[ckhoo]

Hi,

The trunk is ISDN. We did try to reduce the gain but it did not help as I was told by our Pbx engr that the noise seem quite loud. What are the VCM setting for ISDN?

I think it’s contact store 7.8 as pointed out as I thought it will auto update to 8.1 when we upgrade the IPO to 8.1.

We will try out the VRL path & see if it’s help. How should we get rid of the noise if it is from VM Pro or Contact Store as both is installed on the same server.


Thanks again!
CK