Resilient data communications system

Details Resilient data communications system Resilient data communications system

1987-12-23

1989-11-07

Fleming, Michael R.

Excavating

371 91, 364200, G06F 1116

Patent

active

048797162

ABSTRACT:
A communication data system is designed for resiliency by automatically replacing or bypassing defective units. The system includes a number of input/output terminals which are connected to MODEMs through a relay bank. The MODEMs send serial data to a serial I/O module which converts the serial data to bytes which it places on a VMEbus. A network processor sends the data from the VMEbus to a general purpose computer which places the data into the communications network. A general purpose computer or a back-up general purpose computer may detect a defective communication link and automatically switch to a back-up network computer, or cause a control module to switch the relay module to a spare MODEM and spare SIO. The control module may also generate a remote line test to the link between the MODEM and the terminal to determine if that link is defective.

REFERENCES:
patent: 4542507 (1985-09-01), Read
patent: 4607365 (1986-08-01), Greig
patent: 4700348 (1987-10-01), Ise
patent: 4775976 (1988-10-01), Yokoyama
patent: 4797884 (1989-01-01), Yalowitz

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