Telecommunications switching network including improved port sel

Details Telecommunications switching network including improved port sel Telecommunications switching network including improved port sel

1992-07-10

1994-12-13

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

371 201, 379 12, 379 27, H04M 322, H04B 346, H04J 314

Patent

active

053735013

ABSTRACT:
A telecommunications network testing and protocol analyzer arrangement including an improved control and port selecting circuitry which may be provided in the form of a board which plugs into a standard IBM or IBM compatible PC, XT, AT expansion bus (8 bits) and allows for the operate, non-operate control of up to 180 port relays while at the same time providing 8 simultaneous control outputs for other circuit and parameter control functions. All outputs are standard TTL level outputs which may be directly utilized as relay drivers. The selector and control board is controlled by software running under standard PC DOS of MS DOS. The control and selector board may be controlled completely from the computer keyboard as well as from a remote IBM or IBM compatible computer.

REFERENCES:
patent: 4029913 (1977-06-01), Gunderson
patent: 4076970 (1978-02-01), Lubarsky, Jr. et al.
patent: 4978953 (1990-12-01), Hauge
patent: 4996695 (1991-02-01), Dack et al.
patent: 4998240 (1991-03-01), Williams

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