Method of transmitting data reliably over N normal channels, and

Details Method of transmitting data reliably over N normal channels, and Method of transmitting data reliably over N normal channels, and

1997-01-28

1999-08-17

Pham, Chi H.

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via time channels

370219, 34082501, H04J 304, G01R 3108, H04L 100

Patent

active

059404108

ABSTRACT:
The invention concerns a method of transmitting data reliably over N normal channels (3), where N.gtoreq.1, and over at least one back-up channel (4), between a transmit end station (1) and a receive end station (2), the data transmitted comprising both traffic data and supervisory data. According to the invention, the following successive steps are performed in said transmit end station (1): the traffic data and the supervisory data applied to each of the N pairs of inputs are multiplexed on a respective one of the N normal channels; then, the multiplexed data from a "backed-up" one of the N normal channels is switched to the back-up channel. The following successive steps are performed in the receive end station (2): the multiplexed data from the back-up channel is interchanged with the multiplexed data from the backed-up normal channel; then the traffic data and the supervisory data on each of the N normal channels are demultiplexed so as to make the data available at a respective one of the N pairs of outputs.

REFERENCES:
patent: 4417348 (1983-11-01), Abbruscato
patent: 4471491 (1984-09-01), Abe et al.
patent: 4882730 (1989-11-01), Shinmyo
patent: 5581542 (1996-12-01), Kato et al.
patent: 5686917 (1997-11-01), Odom et al.

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