[Asterisk-Users] X100P and NTL (ex Cable + Wireless)

[Stephen Davies]

On Tue, 13 Apr 2004, Alex Brett wrote:

> Has anybody got any experience using an X100P on an NTL phone line in 
> the UK (I'm in an ex Cable & Wireless area if that makes any difference).
> 
> The problem I'm having (and judging by the number of references to it 
> I've found searching it is a common one) is getting * to detect when the 
> line has been hung up.  It doesn't matter if it comes through to a 
> person directly as they can just hang that phone up, but when it hits 
> voicemail, and it sits there for two minutes recording an empty message, 
> and then emails it to the person it can be a bit annoying!

Hi Alex,

Indeed the call end termination doesn't work on an NTL line.  I'm not
so sure it works too well on other lines either.

I did some work a while back to add detection of the UK busy/hangup
signal on the line, but I never got it working well enough to depend
on it.  The problem is that it is a single frequency tone.  (The US
one is dual-tone).  Women's voices used to sometimes trigger my
detector - causing hangups.

The main practical issue is with voicemail, as you say.

My final solution was to switch to ISDN.

Steve