Method of and apparatus for checking datapath failure in a commu

Details Method of and apparatus for checking datapath failure in a commu Method of and apparatus for checking datapath failure in a commu

1984-06-18

1986-07-15

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 84, 370 13, H04J 116, H04J 314, H04J 322

Patent

active

046010289

ABSTRACT:
Actual customer data is routed through a composite muldem which comprises a high speed section and a plurality of low speed sections with the signals being switched or transferred between the high speed and low speed sections all at a common frequency. This same customer data is then tested by a bit by bit comparison circuit which tests the data after it is split, rerouted in various datapath configurations and compared in a logical fashion to first detect datapath failure and then isolate the failure to a specific part of the composite muldem by a set of logical deductions.

REFERENCES:
patent: 4002847 (1977-01-01), Dali
patent: 4244046 (1981-01-01), Broard et al.
patent: 4247934 (1981-01-01), Parras
patent: 4315330 (1982-02-01), Brickman et al.
patent: 4375681 (1983-03-01), Abbott et al.
patent: 4376998 (1983-03-01), Abbott et al.
patent: 4488293 (1984-12-01), Haussmann et al.

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