FIELD: information technologies.
SUBSTANCE: invention describes method of high-speed group data transfer for a system of trunking communication CDMA 2000, when a calling terminal sends a request for a call with group data transfer into a basic station; in reply to a call request with group data transfer, the basic station identifies an ascending high-speed additional channel to the calling terminal, creates and retains the connection with data transfer between the calling terminal and a service unit of packet data; the basic station identifies a descending high-speed additional channel of common use for final terminals in a group according to a request for a call with group data transfer, creates and holds the connection between final terminals and the service unit of packet data; the calling terminal sends data via the ascending high-speed additional channel into the service unit of packet data via a basic station, and a trunking server processes data, afterwards it sends processed data to final terminals via the service unit of packet data.
EFFECT: invention ensures rendering services of group high-frequency data transfer in a system of trunking communication CDMA 2000 and supporting simultaneously a voice call PTT and trunking data transfer.
10 cl, 4 dwg
