[Asterisk-Users] echo cancelation

[Lee Goodman]

Check the debug log to see if echo cancel is really kicking in.
Also, you have to have the echocancel=yes before the individual channel
statements
----- Original Message -----
From: "Linus Surguy" <linus at magrathea-telecom.co.uk>
To: <asterisk-users at lists.digium.com>
Sent: Monday, September 15, 2003 11:19 AM
Subject: [Asterisk-Users] echo cancelation


> HI all,
>
> Having a mental block today - can someone confirm which direction the echo
> cancelation applies to for the Zap PRI channels?
>
> ie. is it removing traces of the transmitted data to the PSTN from the
> received data,
>
> *or* is it removing traces of the data transmitted to Asterisk from the
data
> received back from Asterisk?
>
> Got a configuration that is based on a call made from the PSTN to a SIP
> user:
>
> PSTN -> Telco Switch -> PRI -> Asterisk -> SIP -> X-Lite
>
> PSTN caller hears no echo
> X-Lite user hears significant (1 second or so) echo
>
> If we setup a call so that the 'telco switch' runs an IVR process instead
of
> linking to the PSTN, keeping the call entirely in the digital domain so no
> signal reflection the X-Lite user does not hear echo.
>
> Echocancel=yes etc. is enabled in the zapata.conf
>
> Which party is at fault?
>
> Linus
>
>
>
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