A wide-area, wireless data networking technology. CDPD is an open standard for using existing cellular networks for wireless data transmission. Packets of data are sent along channels of the cellular network.
An enhanced packet overlay on analog cell phone networks used to transmit and receive data. This technology allows data files to be broken into a number of packets and sent along idle channels of existing cellular voice networks. CDPD provides 19.2 Kbps and is deployed by AT&T among several other carriers.