Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network
Patent
1989-03-27
1991-01-29
Ng, Jin F.
Telephonic communications
Having light wave or ultrasonic link for speech or paging...
Including fiber optic link within telephone network
455 33, 455 34, H04M 1100
Patent
active
049892312
ABSTRACT:
A mobile communication system and a control method in which a line controller controls speech channels to be used by fixed transceivers. The line controller is coupled to wired telephone lines, and to a plurality of fixed transceivers. The fixed transceivers are coupled to mobile transceivers by radio circuits. The line controller stores the status of available speech channels, and when there is an incoming call on one of the telephone lines or thre is an outgoing call from one of the mobile transceivers, informs one of the fixed transceivers of the status of a set of speech channels. The fixed transceiver subsequently selects one of the set of speech channels, and informs the line controller of its selection so that the status of the speech channels can be updated.
REFERENCES:
patent: 4012597 (1977-03-01), Lynk, Jr. et al.
patent: 4768220 (1988-08-01), Yoshihara et al.
Augustus Jhancy
Kabushiki Kaisha Toshiba
Ng Jin F.
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