[Asterisk-Users] Asterisk Echo problems, Urgent, please help,

[Matt]

Are you certain that the echo on sip-->sip calls is not being caused
by either a spakerphone or extremely loud handset?

On 9/29/05, Ian Bonham <bon_the_one at hotmail.com> wrote:
> I'm using a Voicetronix OpenSwitch12 analouge card. It's on the latest
> driver for Asterisk (2.4.9) and has echo cancellation turned on. This works
> fairly well on on SIP->POTS calls after it trains up, but there is still a
> small echo. The SIP->SIP calls are really echoy though.
>
> Cheers,
>
> Ian
> (Sorry, only hit 'reply' last time, not 'reply all'!)
>
>
>
> >From: Tom Hayden <thayden at gmail.com>
> >Reply-To: Tom Hayden <thayden at gmail.com>,Asterisk Users Mailing List -
> >Non-Commercial Discussion<asterisk-users at lists.digium.com>
> >To: Asterisk Users Mailing List - Non-Commercial
> >Discussion<asterisk-users at lists.digium.com>
> >Subject: Re: [Asterisk-Users] Asterisk Echo problems, Urgent, please help,
> >Date: Thu, 29 Sep 2005 09:02:05 -0400
> >
> >What kind of POTS trunks/cards are you using?
> >
> >--
> >Tom
> >
> >On 9/29/05, Ian Bonham <bon_the_one at hotmail.com> wrote:
> > > Hi all,
> > >
> > > I hope someone can help, as I have an urgent problem.
> > >
> > > I've got a production Asterisk server thats been deployed, but we are
> >seeing
> > > a strange voice echo problem. There is about a 250ms echo for the users
> >in
> > > the office, and they are hearing their own voice back at them.
> > >
> > > I'm running the CVS Head code, on RH9.0. This is on a P4 box with 2gb of
> > > memory. The client SIP phones are Polycom Soundpoint IP600's, WiFi ZyXel
> > > 2000w handsets, and X-Lite (free) PC clients. All see the same problem.
> > > There is a bridge into the POTS (BT's SystemX) using a Voicetronix
> > > OpenSwitch12 card and the vpbhp driver.
> > >
> > > The echo occurs on both SIP->POTS calls, and SIP->SIP calls. I've tried
> >a
> > > number of volume adjustments to correct the echo but it is always the
> >same.
> > >
> > > If anyone has any ideas I'd really appriciate some help, as this is a
> >major
> > > urgency,
> > >
> > > Many many thanks,
> > >
> > > Ian Bonham
> > >
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> >
> >--
> >Tom
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