Subscriber transmission system

Details Subscriber transmission system Subscriber transmission system

1994-01-31

1995-10-10

Dwyer, James L.

Telephonic communications

Concentrator or trunk selector

379334, 379323, 379324, H04M 1906

Patent

active

054577411

ABSTRACT:
The arrangement is such that to a transmission apparatus of the subscriber side in a subscriber transmission system wherein the transmission apparatus of the subscriber side which serves a plurality of subscribers and a transmission apparatus connected to a switching system are connected to each other via multiplexed transmission lines, there are provided memories to store originating and terminating call signals, and a controller not only to control so that only subscriber transmitter-receivers corresponding to a specific number of subscribers in the subscriber transmitter-receivers for transmitting and receiving signals of subscribers enter an operating state, but also to cause the memories to operate, so that electric power is supplied only to circuits corresponding to a specific number of subscribers in the transmission apparatus of the subscriber side by controlling through the controller when the rate of telephone use is low.

REFERENCES:
patent: 4371789 (1983-02-01), Chen et al.
patent: 4539437 (1985-09-01), Giacopelli et al.
patent: 4571721 (1986-02-01), Yasui et al.
patent: 4754480 (1988-06-01), Mattis et al.
patent: 5001740 (1991-03-01), Takano et al.
patent: 5317633 (1994-05-01), Hiraiwa
Rando, et al., "Power System Design for Fiber to the Home Systems", IEEE LCS, The Magazine of Lightwave Communication Systems, No. 3, Aug. 1990, pp. 17-19.

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