Patent ID: 6850774

Claim:
A method for communicating between a wireless subscriber station and both an analog cellular voice communication system and a Cellular Digital Packet Data (CDPD) communication system, said subscriber station being arranged to monitor both incoming analog cellular voice communications and incoming CDPD communications, said method of communication comprising the steps of: (A) registering said subscriber station with an analog cellular voice communication system; (B) registering said subscriber station with said CDPD system, wherein said registration with said CDPD system, comprises: (1) synchronizing the timing of a first time interval between said subscriber station and said CDPD system, said first time interval defining when said subscriber station is expected to be on a CDPD channel; (2) switching said subscriber station from said CDPD channel to an analog cellular voice control channel to monitor incoming analog cellular voice communications directed to said subscriber station; and (3) switching said subscriber station back to said CDPD channel before the end of said first time interval.