From: Jay Hennigan (jay@west.net)
Date: Tue Oct 07 2003 - 02:53:40 GMT-3
On Mon, 6 Oct 2003, Carole wrote:
> If you hear an echo of your own voice, it is your local phone that is the
> issue. (You hear echo of the side that is messed up, in this case too much
> energy from your transmit signal is being coupled onto your receive signal.)
Sorry, but I must disagree. Echo indicates a problem with the remote
phone. If your local phone were at fault, there would be near-zero
latency so you would not hear an echo.
Some of your own voice is intentionally fed to your earpiece in modern
telephone design. This is referred to as "sidetone" and is designed to
prevent you from a tendency to shout, as you regulate your speaking
voice by the level you hear in your own ear.
Echo indicates a problem with the remote end, usually due to a defective
hybrid (4-to-2-wire converter), incorrectly set impedances on the tail
circuit, or poorly designed terminal equipment.
See:
also known as...
> If you are using a speaker phone, turn down the volume.
I think you mean...
If the party at the remote end is using a speaker phone, ask them to turn
down the volume.
-- Jay Hennigan - CCIE #7880 - Network Administration - jay@west.net WestNet: Connecting you to the planet. 805 884-6323 WB6RDV NetLojix Communications, Inc. - http://www.netlojix.com/***Get your CCIE and a FREE vacation: Shop.GroupStudy.com***
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