Hi,
are you using PoE or power supplies?
As power supllies usually are not grounded it could be that it's comming
from the power source.
You could try using a grounded PoE switch or probably a power backup to test
if this is the case.
Cheers
Tim
On 3/30/07, Louis-David Mitterrand
<vindex+lists-asterisk-users@apartia.org>
wrote:>
> Hello,
>
> We are at wit's end on this. One (and only one) of our five asterisk
> installation is giving us real headaches. Buzzing and/or choppy sound
> interfere with conversations. I recorded some conversations with
> monitor() and no problem whatsoever appear in the recording, while the
> local user was hearing the buzz and half my words.
>
> This is a 1.2.16 installation with mISDN but mostly using SIP to our
> central PRI-equipped asterisk. Phones are Polycom 430, 601, Cisco 7960,
> 7912 all to the latest firmware.
>
> We tried everything: changing the switch, network cards, auditing every
> network drop with fluke, re-certifying our wan, swapping some phones to
> no effect.
>
> Has anyone gone through that ordeal?
> _______________________________________________
> --Bandwidth and Colocation provided by Easynews.com --
>
> asterisk-users mailing list
> To UNSUBSCRIBE or update options visit:
> http://lists.digium.com/mailman/listinfo/asterisk-users
>
--
---------------------------------------------------
snom technology AG
Tim Koehler
Partner Manager
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
http://lists.digium.com/pipermail/asterisk-users/attachments/20070418/1bc74431/attachment.htm