Switching exchange

Excavating

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G06F 1118

Patent

active

049950428

ABSTRACT:
If a failiure of a switching exchange occurs caused by an error, a large number of subscribers are involved. Therefore, switching exchanges are to be protected against a failure. Thereto, in the switching exchange described hereinbefore, the switching network is constituted by three parallel sub-switching networks, whereas each sub-switching network performs the integral switching operations. A selection logic selects for each connection from the data that have been switched three times always the data which have the highest probability of being error-free.

REFERENCES:
patent: 3431557 (1969-03-01), Thomas
patent: 3770948 (1973-11-01), Caputo
patent: 4233682 (1980-11-01), Liebergot
patent: 4271515 (1981-06-01), Axtell
patent: 4360918 (1982-11-01), Ruhnau
patent: 4400792 (1983-08-01), Strelow
patent: 4737951 (1988-04-01), Kruger et al.
patent: 4745542 (1988-05-01), Baba
patent: 4852105 (1989-07-01), Kurz
Th. Krol, The `(4,2) Concept` Fault-Tolerant Computer, Philips Tech. Rev., vol. 41, 1983/84, #1, pp. 1-11.

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