[asterisk-users] Corrupt MixMonitor recordings - .gsm format

Rusty Newton rnewton at digium.com
Fri Dec 19 09:14:55 CST 2014

On Fri, Dec 12, 2014 at 12:31 AM, Stefan Viljoen
<viljoens at verishare.co.za> wrote:
> The server has been up for 7 months beforehand with no problems with
> recordings to .gsm format files.
What changed? It is unlikely that Asterisk suddenly changed without
outside intervention, unless there was some slow leak and a resource
limitation was reached. Your troubleshooting below would have at least
temporarily resolved that issue.

> Only one site has started producing corrupt .gsm files since last week. I've
> already replaced that server with a brand new one, reinstalled the operating
> system and Asterisk, problem still persists.

If it is only the one site, and replacing Asterisk AND the entire
machine with OS did not fix the issue, then I'd think something
changed at the site outside your Asterisk server. I would look into
what is different between VOIP traffic you are receiving on that site
and other sites. Though, I really wouldn't know what to look for in
this case.

The only recent MixMonitor audio corruption issue I found reported was
https://issues.asterisk.org/jira/browse/ASTERISK-24507 and it doesn't
match what you are describing here, unless maybe you only do blind
transfers on this site, and no other sites and you only started having
the blind transfers 7 months into usage.

Rusty Newton
Digium, Inc. | Community Support Manager
445 Jan Davis Drive NW - Huntsville, AL 35806 - US
direct: +1 256 428 6200

Check us out at: http://digium.com & http://asterisk.org

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