Telecommunication over telephone lines is called point-to-point communication because it is between one transmitter and one receiver. Telecommunication through radio broadcasts is called broadcast communication because it is between one powerful transmitter and numerous low-power but sensitive radio receivers.[23]
Telecommunications in which multiple transmitters and multiple receivers have been designed to cooperate and to share the same physical channel are called multiplex systems.
Tech News and ReviewsChrysler A/C Compressors
Subject: Telecommunication over telephone lines 
Fri Mar 25, 2011 4:09 pm