Cellular - CDPD (2)
The Cellular Digital Packet Data (CDPD) System overlays the cellular voice network to provide a wireless extension of existing packet data networks. It provides secure wireless packet data connectivity and is based on standard Internet Protocol (IP).
CDPD is a transmission technology that allows messages to be broken down into a series of packets that are sent along idle or dedicated channels of existing cellular voice networks (commonly referred to as AMPS - Advanced Mobile Phone System) at rates of speed of up to 19,200 bits per second (BPS).
CDPD is a mobile data networking architecture. This layered architecture allows addition of different media access methods.