asterisk users - May 2007 - Audio going blank for a few seconds and then comes back. What could be the reason?

Hi,

Everything was working fine on this 10 phone office, but for last few weeks
they are complaining that audio goes blank for a few seconds during the
conversation, and then comes back on. It goes blank for both parties.

What are the possible causes for this to happen?

-- 
Zeeshan A Zakaria
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Hi Zeeshan,
 
Ethernet Network (or Switch) congestion ?
QoS not realy effective ?
Too high CPU load in Asterisk the server ?
Who knows...
 
You must check during a default.
 
Good kuck !
 
Francois BERGERET,
France.
 

-----Message d'origine-----
De : asterisk-users-bounces@lists.digium.com
[mailto:asterisk-users-bounces@lists.digium.com] De la part de Zeeshan
Zakaria
Envoy? : mercredi 9 mai 2007 12:02
? : Asterisk Users Mailing List - Non-Commercial Discussion
Objet : [asterisk-users] Audio going blank for a few seconds and then
comesback. What could be the reason?


Hi,

Everything was working fine on this 10 phone office, but for last few weeks
they are complaining that audio goes blank for a few seconds during the
conversation, and then comes back on. It goes blank for both parties. 

What are the possible causes for this to happen?

-- 
Zeeshan A Zakaria 

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On 5/9/07, Zeeshan Zakaria <zishanov@gmail.com>
wrote:
> they are complaining that audio goes blank for a few seconds during the
> conversation, and then comes back on. It goes blank for both parties.
I had this same problem happening every 8 minutes. It ended up being a
DSL issue at the DSLAM. You need to ping a server for a while until
you get the period where there is the cutoff to check if you are not
losing connectivity like I was.

Zeeshan Zakaria wrote:
> Hi,
> 
> Everything was working fine on this 10 phone office, but for last few weeks
> they are complaining that audio goes blank for a few seconds during the
> conversation, and then comes back on. It goes blank for both parties.
> 
> What are the possible causes for this to happen?
Disable CDP in the boot menu of the Polycom phones.

Its a PRI, no VoIP trunks, so no DSL. This happens only in the office, where
phones are connected through the same switch on which data flows for the
Internet traffic. But this started happening only few weeks ago. Is there
any way that I can check if its the switch or the router?
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I have Grandstream and Aastra phones. It happens on both of them.
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