Check system for checking information indicative of connections

Details Check system for checking information indicative of connections Check system for checking information indicative of connections

1997-05-28

1999-11-09

Olms, Douglas W.

Multiplex communications

Pathfinding or routing

Through a circuit switch

370380, 370387, 370388, 340826, H04L 1250, H04Q 1100

Patent

active

059827700

ABSTRACT:
In a check system for checking information indicative of connections in a multistage switching network comprising S stages of switching groups and a main control section for controlling the switching groups, the multistage switching network has a switching size of M by N (M.times.N) that is defined by M input lines and N output lines. Each of the switching groups comprises a plurality of switching sections each of which has a plurality of input terminals, a plurality of output terminals, a switching unit for use in connecting these terminals with each other, and a switch control unit for controlling the switching unit. The main control section comprises a memory unit which stores information indicative of connections between the individual switching sections. The main control section has a function of checking whether an output terminal having a specific number of a switching group in a C-th stage (C.ltoreq.(S-1)) can logically be connected to an input terminal having other specific number of a switching group in a (C+1)-th stage, in which the function checks for each connection path in terms of the information that is stored in the memory unit and is indicative of the connections.

REFERENCES:
patent: 4991168 (1991-02-01), Richards
patent: 5369400 (1994-11-01), Bowdon
patent: 5430716 (1995-07-01), Pawelski
patent: 5751764 (1998-05-01), Meyer et al.
patent: 5917426 (1999-06-01), Yoshifuji

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