Fault management which collects alarms, filters and correlates alarms to pinpoint faults, provides testing and diagnosis capabilities, invokes automatic restoration services whenever possible, and keep track of troubles. It presents a general approach of some design techniques to achieve fault tolerant systems. Chapter 7 presents an overview of optical ATM networks. It introduces the advantages of optical technology and the architecture of ATM optical switches designed by different scientists. Recent projects developed in this area are also presented.
Optical networks are a potential candidates for future telecommunication infrastructure.
However, integration of optics in the switching layer is still in stage of research. Advanced optical network technologies will accelerate the research process in all related disciplines. Reliability analysis was carried out. This is done by incorporating the proposed fault-tolerant switch into the baseline network. However, it can be employed as the basic building block for other multistage interconnection networks.