Title :
Fault tolerance techniques in the NEAX61 digital switching system and its field performance
Author :
Itoh, Yukio ; Kawashima, Hiroshi ; Shimojo, Yuichi ; Kawase, Kenichiro
Author_Institution :
NEC Corp., Chiba, Japan
fDate :
10/1/1988 12:00:00 AM
Abstract :
The fault-tolerance techniques applied to the NEAX61 digital switching system are described, focusing on its operation modes, fault detection systems, abnormality supervision, and system restart functions. Also discussed is the improved field performance of NEAX61 systems over three years in terms of service interruptions, which were reduced as a result of quality improvement activities. Methods to further improve system availability are described
Keywords :
electronic switching systems; fault location; quality control; NEAX61; abnormality supervision; digital switching system; fault detection systems; fault-tolerance techniques; field performance; operation modes; quality improvement activities; service interruptions; system availability; system restart functions; Availability; Communication system control; Control systems; Fault detection; Fault tolerant systems; Maintenance; Multiplexing; National electric code; Protection; Switching systems;
Journal_Title :
Selected Areas in Communications, IEEE Journal on
