All devices connecting through CDPD are continuously on line and available, but no charges are incurred unless, and until, data from a CDPD device is actually sent or received. CDPD modems are the only equipment a transit company needs to purchase. Low cost to operate. CDPD data communications costs are comparable to the costs for local measured telephone services. Simple and inexpensive installation.
CDPD modems are small, and only require connection to an external, cellular antenna.
Fare collection equipment can be moved without installing cable, conduits, or phone lines. Ease of operation. Transit properties are relieved of the cost and responsibility of acquiring and maintaining fiber optic systems, routers, hubs, and the many other devices necessary to support traditional networks. With CDPD, portable or vehicle installed devices can also be on-line. Remote System Administration.