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Principles of signalling systems

Principles of signalling systems

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This chapter discusses the function of the signalling system in telecommunication networks. Signalling provides the ability to transfer information between customers, within networks and between customers and networks. Signalling is the life-blood, the vitalising influence, of telecommunications networks. It provides the bond that holds together the multitude of transmission links and nodes in a network to provide a cohesive entity. Without signalling, networks are inert. By providing effective signalling systems, a network is transformed into a tremendously powerful medium through which customers can communicate with each other using a range of telecommunications services. The critical nature of signalling is driving its rapid evolution. Old signalling systems that were simple mechanisms for transferring basic information are being replaced by efficient data transfer highways. The ultimate objective is to provide an unimpeded transfer of information between customers, between nodes within networks (inter-nodal or inter-exchange signalling) and between customers and exchanges (access signalling).

Inspec keywords: telecommunication networks; telecommunication links; telecommunication signalling

Other keywords: transmission links; telecommunication networks; signalling systems; access signalling; data transfer; telecommunications services

Subjects: Telecommunication applications

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