[Asterisk-Users] Polycom 501 horrible echo

[Jeff Herring]

At 09:02 PM 1/23/2006, Douglas Garstang wrote:
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>
>You aren't making calls from one phone to another, with them right next to 
>each other on the same desk are you?

no.

>
>Doug.
>
>         -----Original Message-----
>         From: Jeff Herring [mailto:jeffh at sldsi.com]
>         Sent: Mon 1/23/2006 6:46 PM
>         To: asterisk-users at lists.digium.com
>         Cc:
>         Subject: [Asterisk-Users] Polycom 501 horrible echo
>
>
>
>         I have the following situation:
>
>         Asterisk 1.2.1
>         25+ Polycom 501 telephones. Bootrom 2.6.2.0032 Application 1.6.2.0041
>         Some 501's local to my network, some across the great INTERNET 
> divide.
>         PRI connected to Sangoma card.
>
>         Issue: horrible echo (and squeals, and "underwater-like" sound) 
> on speaker
>         phone when calling from extension to extension.
>
>         echo not present when calling outbound using PRI or when 
> receiving calls
>         from PRI.
>         echo not present when using handset or headset in any case.
>
>         All gains, etc. are as listed in the Polycom Admin Guide.
>
>         Not specific to any phone, or its location on our network.
>
>         I suspect the issue is related to the echo cancelation HW in the 
> speaker
>         phone, but
>         I'm not sure...The unfortunate thing is these phones were 
> purchased because
>         of their
>         excellent speaker phones which now appear to be worse than the 
> Grandstreams!
>
>         Anyone with thoughts of where to start?
>
>         TIA - Jeff H.
>
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--------------------------------------
Jeff Herring  /  jeffh at sldsi.com
Seacoast Laboratory Data Systems, Inc.
Voice:  603 431 4114  x14
FAX:    603 431 2112
--------------------------------------

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