Two-way radio communication system having selectable operating m

Details Two-way radio communication system having selectable operating m Two-way radio communication system having selectable operating m

1989-11-13

1990-07-10

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at separate stations

Single message via plural carrier wave transmission

34082544, 379 67, 379 77, H04B 100

Patent

active

049412035

ABSTRACT:
A radio communication system includes a base station and a plurality of remote units. The remote units can be operated in one of several modes. In the Message Storage mode, a telephone or remote unit caller is verbally informed that the called remote unit is not receiving calls, and the caller is then given the option to store a voice or numeric message for later transmission to the called remote unit. If a caller enters an Override code, however, the system attempts to establish voice communication between the caller and the called remote unit. In the Call Screening mode, the caller's message is stored in the base station and, simultaneously, forwarded to the called remote unit. During reception of the message, the called remote unit can "pickup" the call and begin normal voice communications with the caller. When a remote unit changes from the Message Storage mode to some other mode, its stored messages are automatically forwarded to the remote unit. If the remote unit is busy, out of radio transmission range, or doesn't respond to a call, the caller is given an opportunity to store a message.

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patent: 4680785 (1987-07-01), Akiyama et al.
patent: 4748655 (1988-05-01), Thrower et al.
patent: 4783800 (1988-11-01), Levine

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