NBX does it due to the proprietary protocol.
----- Original Message ----- From: "Jeremy Koski" <[EMAIL PROTECTED]>
To: "Asterisk Users Mailing List - Non-Commercial Discussion" <[email protected]>
Sent: Tuesday, April 26, 2005 11:56 PM
Subject: Re: [Asterisk-Users] Cisco 7960 earpiece speaker echo question





Hmm..We currently have the 3com NBX system with VoIP which do echo back
in the earpiece. I thought it might just be the Cisco phone itself.
Hopefully soon I can test with some more Cisco phones to see if it is the
phone itself, or something else.




On Tue, 26 Apr 2005, Henry Devito wrote:

This echo is known as side tone it happens naturally on analog lines,  IP
phones usually do not provide this,

Henry
----- Original Message -----
From: "Jeremy Koski" <[EMAIL PROTECTED]>
To: "Asterisk Users Mailing List - Non-Commercial Discussion"
<[email protected]>
Sent: Tuesday, April 26, 2005 1:53 PM
Subject: [Asterisk-Users] Cisco 7960 earpiece speaker echo question


>
>
> Normally, when you speak into the receiver of a phone, you can hear
> yourself in the earpiece at a very low volume. I have a Cisco 7960 > phone
> that I'm using with asterisk and I don't get that echo back on the
> earpiece speaker. I only have one Cisco 7960 phone, so I can't test it > on
> others right now.
>
> My question is...Is this normal, do I have a bad handset? Is a way I > can
> fix it?
>
> Thanks in advance.
>
>
>
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