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 <[EMAIL PROTECTED]>
Reply-To: Tom Hayden <[EMAIL PROTECTED]>,Asterisk Users Mailing List -
Non-Commercial Discussion<[email protected]>
To: Asterisk Users Mailing List - Non-Commercial
Discussion<[email protected]>
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 <[EMAIL PROTECTED]> 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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