Multiple access radio telephone system selectively operating on

Details Multiple access radio telephone system selectively operating on Multiple access radio telephone system selectively operating on

1987-03-26

1987-12-08

Lev, Robert

Telephonic communications

Having light wave or ultrasonic link for speech or paging...

Including fiber optic link within telephone network

379 56, 379 63, 455 56, 455 33, H04Q 701

Patent

active

047122293

ABSTRACT:
A multiple access radio telephone system is connected to a telecommunication switching system and serves a group of N remote stations through M two-way radio channels (where M is smaller than N). The remote stations have corresponding subscriber line terminals in the switching system and are accessible to one of the two-way radio channels selected by a concentrator. For efficient channel utilization, the concentrator establishes a full-duplex mode connection between one of the corresponding subscriber line terminals of the switching system and the selected two-way radio channel in response to a request for an extragroup call and establishes a half-duplex mode connection between two of the remote stations through the selected two-way radio channel in response to a request for an intragroup call.

REFERENCES:
patent: 4037158 (1977-07-01), Eastmona
patent: 4288868 (1981-09-01), Grotjohann et al.
patent: 4288869 (1981-09-01), Kolodzey et al.
patent: 4450555 (1984-05-01), Pays
patent: 4549293 (1985-10-01), Christian et al.
patent: 4599719 (1986-07-01), Breen et al.
patent: 4635285 (1987-01-01), Coombes
patent: 4661970 (1987-04-01), Akaiwa
patent: 4672601 (1987-06-01), Ablay

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