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 From:  "Christian Oswald" <coswald at dls dot net>
 To:  <m0n0wall at lists dot m0n0 dot ch>
 Subject:  RE: [m0n0wall] [Fwd: Cisco SIP phones]
 Date:  Thu, 12 May 2005 09:12:51 -0500
But it could be caused by the persons voip provider. 

Christian Oswald
DLS Internet Services
Office: 847-854-4799 ext 235
Fax: 847-841-4678
coswald at noc dot dls dot net

-----Original Message-----
From: sai [mailto:sonicsai at gmail dot com] 
Sent: Thursday, May 12, 2005 5:06 AM
To: Adrian Basescu
Cc: m0n0wall at lists dot m0n0 dot ch
Subject: Re: [m0n0wall] [Fwd: Cisco SIP phones]

agreed - echo will not be caused by your network.

sai

On 5/11/05, Adrian Basescu <adrianeli at gmail dot com> wrote:
> Hello,
> From my personal experience with SIP phones, but not Cisco, the
traffic
> shaping may influence your voice quality, not echo.
> Echo should be canceled by the SIP phone, which usually has a
configuration
> option to enable or disable echo cancellation.
> 
> Heavy traffic may create drops in the voice link, a missed word or
part of
> an word, or force the SIP phones to negociate a lower quality codec.
> 
> --
> Adrian Basescu
> 
>

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