Multiplex communications – Wide area network – Packet switching
Patent
1990-06-14
1995-01-31
Marcelo, Melvin
Multiplex communications
Wide area network
Packet switching
370 16, 370 55, 371 112, H04B 342, H04B 346
Patent
active
053864166
ABSTRACT:
When transmitting digital signals using time-division multiplexing via a transmission link with repeaters at which time slots are either only branched or also re-injected, the problem arises of continuing to maintain the transmission of information even when an alarm is triggered in a repeater. The present invention provides a bypass circuit via which the repeater is bypassed when an alarm is triggered therein. If a re-injection of time slots is provided, the bypass circuit can thereby transmit a message to the adjacent repeaters and/or line terminal equipment in order to permit the injection of time slots not re-injected in the repeater. If the time-division multiplex signal contains a service channel, messages can be transmitted via this channel to the adjacent repeaters and follow-up measures can be initiated.
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IEEE Global Telecommunications Conference, vol. 2 of 3, Houston, Tex.; Dec. 1-4, 1986.
"Multiplexen- und Abzweigen von Fernsprech- und Datensignalen", M. Krohn and H. Muller, Telecom Report 10 (1987) Special Multiplex- und Leitungseinrichtungen (Multiplexing and line transmission equipment), pp. 43-50.
ALCATEL N.V.
Marcelo Melvin
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