[asterisk-users] Strange network issue

[Mark Deneen]

On Thu, Jul 21, 2011 at 7:13 PM, Mike Diehl <mdiehl at diehlnet.com> wrote:

> Hi all,
>
> I've got a strange problem with a customer's phones.
>
> They've got a bunch of Grandstreams that seem to be rock solid... until
> 7:00pm.  At 7:00, some of the phones become unavailable, and stay down.
>  Call
> quality is solid almost all the time.  But right at 7:00, things go bad.
>  Only
> some of the phone lines go down and they stay down until the phone is
> rebooted.
>
> I'm not even sure what to look for when I go to the site.  Any ideas?
>
>
Many years ago, in my college days, the network in one building would fail
around a certain time every day.  The sun would hit the network closet
around the same time every day in the summer, causing the equipment to
overheat and temporarily fail.

I would go there and observe everything which happens at 7:00.  Maybe it's
something that a cleaning service inadvertently does, like faulty wiring + a
vacuum cleaner.

-M
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