Multiplex communications – Wide area network – Packet switching
Patent
1980-06-03
1983-03-15
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 14, 371 71, H04J 314
Patent
active
043769985
ABSTRACT:
A muldem (100) includes a transmit multiplexer section (103, 104) combining a variety of low speed and intermediate speed digital data inputs into a single high speed data output. A monitor (101) is provided for testing data path failures through the muldem (100) by comparing the latter's input and output. The monitor (101) includes comparing means (806, FIGS. 13a and b) which accepts both low and intermediate speed data from the inputs for comparison against the high speed data from the output.
REFERENCES:
patent: Re27864 (1974-01-01), Davis et al.
patent: 3794768 (1974-02-01), Carney et al.
patent: 3920919 (1975-11-01), Aillet
patent: 4022979 (1977-05-01), Smith
Brochure of Applicants' Prior Products, "DMX-13 A/B/C Digital Multiplexer/Demultiplexer".
Abbott Ned E.
Keshavan Hampapur R.
McGuire Robert J.
Greenberg Howard R.
Olms Douglas W.
Rockwell International Corporation
Sewell V. Lawrence
Taken Michael E.
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