H - Electricity – 04 – L
Patent
H - Electricity
04
L
354/233, 354/225
H04L 1/22 (2006.01) G06F 11/16 (2006.01) G06F 11/20 (2006.01) G06F 13/38 (2006.01) G06F 11/14 (2006.01) G06F 11/22 (2006.01)
Patent
CA 1217281
S P E C I F I C A T I O N FAULT-TOLERANT COMMUNICATIONS CONTROLLER SYSTEM ABSTRACT The present invention relates to a system for control- ling multiple communications lines, so that a computer system can operate with a single component failure. Two processors are used to control two communications controllers and each of the controllers control up to 15 line controllers. Each line controller has two ports and each port is connected to a communications controller whereby providing two communications paths to each processor. Two power supplies are also used to provide single failure fault-tolerance. Additionally, the disclosure relates to providing a downloadable microprocessor board in combination with, but separate from, an interface board that is designed to meet various communication format specifications and the line controller comprises the two boards. The use of a single microprocessor board improves produceability, maintainability and diagnostic capabilities.
467290
Goodman William R.
Greig David A.
Hinders David L.
Smart & Biggar
Tandem Computers Incorporated
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