Multiplex communications – Wide area network – Packet switching
Patent
1991-07-31
1994-04-12
Dwyer, James L.
Multiplex communications
Wide area network
Packet switching
370 76, 370 71, 370 73, 359118, 359125, 455 31, 348 7, 348 12, H04Q 1104, H04J 102, H04N 714
Patent
active
053032292
ABSTRACT:
In an optical fiber telecommunications network, an optical network unit is provided in the subscriber neighborhood for terminating the optical fiber transmission line and for providing electrical signals over metallic lines to the subscribers. The unit functions to convert the optical signal to an electrical signal and demultiplex the electrical signal to divide out baseband telephony signals from broadband video channels. The electrical signals are further demultiplexed and distributed to line cards serving each subscriber, while the broadband video channels are demultiplexed and provided to subscribers that have requested specific video channels. The system includes a test unit for performing metallic tests and also a means to gather subscriber channel requests to form a video control channel which is transmitted to a remote terminal via a baseband telephony channel.
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patent: 5163090 (1992-11-01), Pawlowski et al.
patent: 5175639 (1992-12-01), Takasaki
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Burton Larry W.
Czerwiec Richard M.
Meador William C.
Sutherland Joseph E.
Withers Andrew L.
Alcatel Network Systems, Inc.
Dwyer James L.
Fournier Paul
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