Quote Originally Posted by Alpha2 View Post
Mine is in the garage, 21 year old house, or thereabouts.

Burglars turn off the power to disable landline phones, (doesn't work, only turns off the ringer, but hey, they're not the brightest bulb in the box), burglar alarms, and generally discumbobulate the residents.

Or so I'm told.

uhhh landline phones are powered off the phone line itself. This does not include cordless or other phones that have an AC plug in normally a wall wart of some sort. When the phone is not in use, this is a constant DC signal (about 50-60 volts). When the phone rings, the signal is a 20 hertz AC signal (about 90 volts). When in use it is a modulated DC signal (between 6 and 12 volts). The phones lines even have power during a blackout in most cases.