Multiplex communications – Wide area network – Packet switching
Patent
1981-11-24
1984-11-06
Orsino, Jr., Joseph A.
Multiplex communications
Wide area network
Packet switching
455607, 455612, 370 4, H04B 900
Patent
active
044816219
ABSTRACT:
A service integrated, time multiplex digital signal transmission system for transmitting narrowband and broadband signals between a central exchange terminal and a subscriber terminal, which system includes a optical fiber waveguide path connected between the terminals, a transmitter device at one terminal composed of sources of such narrowband and broadband signals and multiplexers connected for combining the signals provided by the sources into a multiplex signal and for supplying such multiplex signal to the optical fiber waveguide path, and a receiver device at the other terminal composed of demultiplexers connected to the optical fiber waveguide path for receiving multiplex signals from that path and separating the received multiplex signals into narrowband signals and broadband signals. The device at the subscriber terminal is normally supplied with operating power by local utility mains. The system further includes a charge accumulator for supplying operating power independently of the local mains, connected for supplying such power to the device at the subscriber terminal in the event of interruption of the power supply provided by the local mains, and devices connected for switching the system to effect signal transmission at a reduced bit rate in the event of such local mains power interruption.
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Rauth Erich
Schmack Hans-Jurgen
Licentia Patent-Verwaltungs-GmbH
Orsino Jr. Joseph A.
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