A Schematic of the wiring. I ran new 2-line telephone, CAT-5e network, and RG6 Cable TV and Antenna wiring. Recently I added wires under the living room floor for rear speakers (now I just need a 5-speaker Home Theater system).
The patch panel where all the network jacks in the house come home to the switch and router in the basement.
This is a typical keystone wallplate. This one is in a bedroom where I have one Network Jack, one Cable TV jack, and a jack for each phone line.
The wallplate behind the entertainment center in the Living Room, with a jack each for Cable TV and the Antenna, along with a set of binding posts for speaker wires that run to the other side of the room for rear speakers.
Second wallplate in the living room. This one also has a jack for cable tv and the antenna (giving the option of putting the TV against a different wall), two network jacks, and both phone lines.
This is the plate for the rear speakers, behind the sofa. The binding posts for each channel are reversed because facing this way the right channel is to your left, and the left channel to your right.