There are 2 wires, red and green for the primary, yellow and black for the secondary...connect whichever pair to the appropriate terminals on the jack, they are colour coded for people...uh, not ...
My house has a bunch of telephone jacks (around 8?) and they are all home-run directly to the telco box outside the house. I'd like to place my voip adapter in the basement and use it to power all of ...