04692918 is referenced by 235 patents and cites 7 patents.

The reliability of a distributed processing system is enhanced through the use of a highly reliable data communication system. Each node of such a system is connected to the other nodes by a local data network, including duplicated data network media, such as coaxial cables. Each node includes a maintenance processor for controlling which of the duplicate network media is active and which is standby. Regular inter-node data packets are transmitted over the active network medium. Control data packets to the maintenance processor are sent from a control node over the standby network medium. The maintenance processor can also totally stop transmission of data from the associated node to both data network media.

Title
Reliable local data network arrangement
Application Number
6/682096
Publication Number
4692918
Application Date
December 17, 1984
Publication Date
September 8, 1987
Inventor
Wayne V Lindquist
Lisle
IL, US
Roger A Elliott
Naperville
IL, US
Agent
Peter Visserman
Werner Ulrich
Assignee
AT&T Bell Laboratories
NJ, US
IPC
H04J 3/02
View Original Source