Method and apparatus for fault testing multiple stage networks

Details Method and apparatus for fault testing multiple stage networks Method and apparatus for fault testing multiple stage networks

H - Electricity

04

M

344/1.3

H04M 3/08 (2006.01) G01R 31/02 (2006.01) H04Q 1/24 (2006.01) H04Q 3/54 (2006.01)

Patent

CA 1039836

ABSTRACT OF THE DISCLOSURE: An apparatus for testing the crosspoints of a multiple stage end-marked switching network. The network being tested comprises in each stage at least one orthogonal matrix of bi- stable, solid-state crosspoints. The network has a predetermined plurality of unique paths between each fixed point at the oppo- site ends of the network. Those pachs are clearly defined in at least one intermediate stage of the network such that the paths can be checked for open circuit conditions and short circuit con- ditions by enabling specific paths or groups of paths in that stage and inhibiting all other paths or groups of paths. The apparatus shown may be controlled by controls which may be incor- porated into a stored program controller controlling the switch- ing network or by means of a computer programmed to perform rou- tining of the exchange including the network. -1-

213697

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