Telecommunications – Transmitter and receiver at separate stations – Single message via plural carrier wave transmission
Patent
1988-05-31
1990-07-03
Safourek, Benedict V.
Telecommunications
Transmitter and receiver at separate stations
Single message via plural carrier wave transmission
455 34, 455 58, 379 61, 379 63, H04B 138, H04M 172
Patent
active
049397850
ABSTRACT:
In a radio communication network system for use in carrying out communication with a plurality of radio telephone sets in a service zone by the use of a control channel and a plurality of speech channels, a connecting equipment unit (CE) is selectively operable in cooperation with a radio control unit (RCU) in a speech mode of forming a speech path through a selected one of the speech channels and an additional mode of selectively monitoring the control and the speech channels. The additional mode may be divided into first and second control modes for allowing and rejecting reception of a call with the control channel monitored, respectively. Alternatively, either a rest mode or a combination of rest and initial program loading modes may be added to the additional mode. A plurality of the connecting equipment units may be located in a single service zone and selectively put into the speech and the additional modes with only one of the connecting equipment units kept in the first control mode.
REFERENCES:
patent: 4242538 (1980-12-01), Ito et al.
patent: 4654879 (1987-03-01), Goldman et al.
patent: 4741019 (1988-04-01), Takahashi
patent: 4768218 (1988-08-01), Yorita
patent: 4776001 (1988-10-01), Murata et al.
Hashimoto Tadao
Hirono Masahiko
Murata Yoshitoshi
Sato Mitsuo
Shibata Toshihiko
Matsushita Communication Industrial Co., Ltd.
NEC Corp.
Nippon Telegraph and Telephone Corp.
Safourek Benedict V.
Smith Ralph E.
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