ABSTRACT
Cellular digital packet data (CDPD) is a data-over-cellular standard for providing LAN-like service over cellular voice networks. CDPD employs digital modulation and signal processing techniques, but it is still an analog transmission. The CDPD infrastructure employs existing cellular systems to access a backbone router network that uses the IP to transport user data. Personal digital assistants, palmtops, and laptops running applications that use IP can connect to the CDPD service and gain access to other mobile computer users or to corporate computing resources that rely on wireline connections.
