a video transmission system for facilitating transmission of video and control signals , particularly infrared remote control signals , between different locations in a residence using existing telephone wiring . simultaneous transmission of signals of both types over active telephone lines is possible without interference with telephone communications . transmission succeeds without requiring special treatement of the video signals beyond rf conversion , despite signal attenuation inherent in transmission over the telephone line media . two or more video sources may be tied into the system , and selected as desired . remote control signals generated in one room may be utilized without requiring a clear line of sight between the remote control device and the receiver .