[asterisk-users] Echo Issue

[Noah Miller]

Hi Joseph -

> I have Astra 480i's and Snom M3's. I am using a SIP provider so I do
> not have any peripheral cards.
>
> I am on voip-wiki now reading about the echo canceller tuning, thanks!

For your particular case, you're probably not going to find much
useful info on the wiki about echo cancellation.  The info there is
about reducing echo when there is an analog-to-digital conversion (in
other words, if you're connecting to PSTN lines somewhere).

If you have echo on calls that go through your SIP provider, it is
possible that they are not doing a very good job with echo
cancellation.  If the echo is exclusively on these calls, you'll
probably want to call them to discuss this.

If you have echo on calls between your Astra and/or Snom handsets, you
may want check the gain settings on these devices.  Reducing the gain
would probably lessen the effect of the echo.  You may also want to
check if either of these phones is doing any AEC (acoustic echo
cancellation), and if there are any AEC parameters that are
adjustable.  I don't have experience with either of these phones, so I
can't give you direct info on how to do this, but I'm sure that at
least Snom support can help you.


- Noah