[asterisk-users] Echo problem

[pixiesfr]

Hi,

Did you try to increase echotraining ??
echo training = 800 ..

@++
> Hello,
>
> We're in the process of setting up an Asterisk server, and are having
> echo problems.  We have a Digium TE110P, and have tried the MG and
> MARK2 AGGRESSIVE echo cancellers, with a variety of gain levels and
> training times, and with both trunk and 1.2 branch versions of
> Zaptel, Libpre, and Asterisk.  In all cases, callers from the PSTN
> hear their own voice echoed back after 1.5-2 seconds; none of these
> adjustments made a difference, except adjusting gain made the echo
> quieter.
>
> We followed these instructions in trying to eliminate echo:
>
>     http://www.asteriskdocs.org/modules/tinycontent/content/docbook/current/docs-html/x1695.html
>
> Our lines come in from the telco in a PRI, then connect to a Tadiran
> switch which hands the lines off to Asterisk over a T1 card.
>
> We have done loopback tests with the Digium card with a loop plug in
> it.
>
> We're a bit stumped as to what to try next.  Any suggestions or
> advice?
>
> Thanks
>
> ---Scott.
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