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Digital Switching Systems
Chapter 1:
Switching System Fundamentals: Central office linkages, switching system hierarchy building blocks of digital switching system,and basic call processing.
Chapter 2:
Communications and Control: Levels of control, basic functionalities of digital switch subsystems, control architectures, multiplexed highways, switching fabric, programmable junctors, network redundancy.
Chapter 3:
Reliability Modeling: Downtimes in digital switching systems, reliability assessment techniques, Markov models, failure models,and sensitivity analysis.
Chapter 4:
Switching System Reliability Analysis: Analysis of centralprocessor community, clock subsystem, network controller subsystem, switching network, line and trunk downtimes, call cutoffs, ineffective machine attempts, and partial downtimes.
Chapter 5:
Digital Switching Software: Software architecture, operating systems, database management, digital switching system software classification, call models, software linkages during a call, and feature interaction.
Chapter 6:
Quality Analysis of Switching System Software: Life cycle of switching system software, software development, a methodology for assessing switching software quality, software testing, CMM, and other models.
Chapter 7:
Maintenance of Digital Switching Systems: Interfaces of central office, system outage causes, software patches, generic program upgrade, problem reporting, firmware deployment, maintainability metrics, a strategy for improving software quality, and defect analysis.
Chapter 8:
Analysis of Networked Switching Systems: Switching in anetworked environment, network reliability requirements, Markov model of a hypothetical STP, dependence of new technologies on digital switch, ISDN, AIN, and future trends in digital switching systems.
Chapter 9:
A Generic Digital Switching System Model: Hardware architectures of a central processor, network control processors, interface controllers, interface modules, software architecture, recovery strategy, calls through the switching system, and analysis report.
Chapter 10:
Major Digital Switching Systems in the North AmericanNetwork: High-level hardware and software architectures
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