(1+N) Hitless channel switching system

Details (1+N) Hitless channel switching system (1+N) Hitless channel switching system

1988-10-03

1990-10-02

Atkinson, Charles E.

Excavating

371 51, G06F 1110

Patent

active

049611909

ABSTRACT:
A (1+N) (N.gtoreq.1) hitless channel switching system of a digital transmission system having an error correction function in which a transmitting side is connected to a receiving side through N regular channels and a single standby channel, includes in the receiving side, a detecting unit, a channel degradation determination unit, and a switching unit. The detecting unit detects a bit error rate of each channel before error correction. The channel degradation determination unit determines channel degradation in accordance with the detected bit error rate. The switching unit switches a degraded channel to the standby channel with non-interruption in accordance with information from the channel degradation determination unit.

REFERENCES:
patent: 3681694 (1972-08-01), Sarati
patent: 4234956 (1980-11-01), Adderley et al.
patent: 4365247 (1982-12-01), Bargeton et al.
patent: 4677619 (1987-06-01), Kawai
patent: 4686675 (1987-08-01), Morimoto et al.
patent: 4774703 (1988-09-01), Force et al.
patent: 4799237 (1989-01-01), Itoh

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