Chapter 20 Network Reliability and Availability

20.1 Introduction

Chapter 17 described the network requirements of certain classifications of services that can be offered over broadband FDM distribution networks. Among those are transmission quality, effective bandwidth, service reliability (the probability that a system will survive without interruption for a defined period), outage rate (the average rate at which service interruptions occur), and availability (the percentage of time that service is available). Transmission quality was treated in detail in chapters 1016, and effective bandwidth was covered in Chapter 18. This chapter will deal with the calculation of network reliability and service availability. It will also discuss how those ...

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