I live in a fairly new (3ish year old) townhouse in Wellington, and I noticed that the internal phone wiring is done with Cat5e, with one pair used for the phone and the remaining pairs unconnected. I was wanting to use 2 pairs to make a connection between two points in the house, one being at the location of our alarm controller.

If I were connecting any of the actual phone jacks it seems I could just ensure that the correct points in the daisy chain were connected along the way however the alarm seems to be wired up differently.

As I expected, the phone connection comes into, and out of the alarm controller as these are designed to be the entry point of the phone connection so that the alarm can 'capture' the line if it triggers, however all I see coming into and out of the alarm is one white 2-pair cable (The rest of the phone wiring is Blue Cat5e).

So I am guessing that there is some *other* point in the house where the phone cable for the alarm is actually captured from. Interestingly enough, there is Blue Cat5e running right past the alarm panel coming in from the demarc, however I can't actually use it without cutting into the cable as it runs past. It just comes in from a hole in the floor and disappears into the wall cavity.

Can anyone offer any advise on why the alarm (which was installed when the house was built) would not have captured the incoming phone line as it ran past? And where I might find the point where it does tap into the phone line in the house?