Subject: [codec] FW: #14: VAD and CNG?

From: "Christian Hoene" <[email-masked]>
Date: Mon, 24 May 2010 17:52:47 +0200

-----Original Message-----
From: Brian Rosen [mailto:[email-masked]] 
Sent: Monday, May 24, 2010 5:13 PM
To: Christian Hoene
Subject: Re: [codec] #14: VAD and CNG?

When you make an emergency call, background is a very important source of
information.  For example, if the call taker hears someone threaten the
caller, that will inform the response.  Often the caller is in distress, and
may put the phone down, or speak faintly.

There are no laws or regulations governing this, but it really is 'best
practice'.

Brian

On 5/24/10 10:57 AM, "Christian Hoene" <[email-masked]> wrote:

>> I hope we are assuming VAD (or DTX) is negotiable.  It is essential (for
>> emergency calls) that VAD is disabled.
> 
> Hi Brian,
> 
> Any laws somewhere on this requirement? Positioning for emergency call is
> required by law in many countries. But I never heard
> anything about switching off DTX...
> 
> Christian
> 
>