[Asterisk-Users] X100P in the UK - seems to short the dialtone

[Eric Wieling]

On Friday 04 March 2005 11:43 am, Nigel Taylor wrote:
> The line is fine. If I connect an analog phone I get ringtone and can call
> out. If I leave the phone connected and connect another wire from the
> socket into the X100P, I immediately lose the ringtone. I've checked The
> voltages and when the line is connected to the X100P, the line voltage
> drops from around 50 volts to 1 ish.
>
> It all feels like the X100P is shorting the line and is faulty but I'm,
> trying to make sure I'm not missing something.

Sounds like your phone line uses a 3-wire interface (common in the UK).  You 
need a 3-wire to 2-wire adapter from your telco.