Fault tolerant dual port serial link controller

Details Fault tolerant dual port serial link controller Fault tolerant dual port serial link controller

1985-12-23

1987-01-13

Safourek, Benedict V.

Multiplex communications

Wide area network

Packet switching

34082516, 375 7, 375 38, 371 8, H04Q 1104, G06F 1120

Patent

active

046370110

ABSTRACT:
A multiple port serial link controller printed wiring card is shown. This printed wiring card provides at least two independent ports. These ports may be of different types such as RS-232 interface, RS-449 interface or other serial protocols such as HDLC, SDLC or BISYNC. These printed wiring cards may be combined in a duplex fasion to form two duplex (highly reliable) port transmission circuits. The duplex configuration requires a minimum amount of backplane wiring. This backplane wiring is permanent and requires no manual intervention for switching between transmission and mode types. Switching between transmission mode type and reconfiguring for the occurrence of faults may be accomplished by an automatic processor manipulation of a number of control points.

REFERENCES:
patent: 4101733 (1978-07-01), Whitaker
patent: 4477895 (1984-10-01), Casper et al.
patent: 4527157 (1985-07-01), Krikor
patent: 4534027 (1985-08-01), Perry

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