Have them put their hand over the mic and see if the echo is still
there. If that "fixes" it, then it's acoustic. In which case it's a
matter of picking the right handset or turning the volume down. If not,
then it's EE business which I don't know enough about to comment on.
------ Original Message ------
From: "Chris Fabien" <[email protected]>
To: [email protected]
Sent: 2/17/2018 10:22:47 PM
Subject: Re: [AFMUG] How to create echo on an analog tel line
So we had a customer complaining about sometimes hearing an echo, they
go get a new multi handset dect cordless phone system, and it's now way
worse echo than the old phone. We are using the built in ATA in our ZTE
ONU, never had much trouble with echo on the Cisco ATA we used to use
on wireless customers. Not sure how to address this or just give up in
the ZTE go up if it's just crap?
On Feb 17, 2018 8:26 PM, "Adam Moffett" <[email protected]> wrote:
You can get acoustic echo by adding latency. This is the handset mic
picking up the handset speaker, and it doesn't happen on POTS lines,
but it happens on VoIP using the exact same phone because the up and
down path are no longer synchronous.
There are also electrical echo effects that are above my pay grade.
One of the old phone guys here maybe knows something.
My understanding is that echo cancellation can detect and fix the
electrical echos, but not the acoustic echo. To fix acoustic echo you
either turn down the volume on the handset or use a different handset.
------ Original Message ------
From: "Chris Fabien" <[email protected]>
To: [email protected]
Sent: 2/17/2018 6:09:32 PM
Subject: [AFMUG] How to create echo on an analog tel line
We are having sporadic reports of our subscriber hearing an echo on
some new go up ATA we are usin g. Whenever I test it myself with
various phones, it's fine. Anyone know how I can create this
condition so I can fool with the echo cancellation gains to see if I
can fix it?
