Is it Redcare? I'm sure BT don't allow Redcare and broadband over the same phone line for this exact reason.
nah it's an ADT monitored alarm so uses the phoneline if it gets set off.
I moved the location of my front door, so had to move the control panel to be near the new front door. The phone socket was inbetween the alarm box and the control panel so instead of putting a new wire to connect the control panel to the alarm box, he used the spare wires in the phone line going from the alarm box to the phone socket.
Basically it saved him 5 minutes work and looked a bit neater. Backfired when he had to come back to rewire it though. He's going to have to come back again because he's screwed up the night setting.
The monitoring is more hassle than it's worth tbh. The monkey who installed it managed to screw up and send an emergency notice to the cops, who turned up and were really irate (understandably). We also had a false alarm when the battery in the smoke alarm (also part of the alarm) died, and the idiots called everyone on our key-holder list except me and the girlfriend. When i called them up to find out what had set off the alarm, they didn't know.
When the contract expires I'm going to change it for one with a simcard that calls me when it goes off instead, at least i don't have to deal with some call-centre r****d.