DSS1 physical and data-link layers

DSS1 physical and data-link layers

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This chapter describes the functions of the physical and data-link layers of digital subscriber signalling system No. 1 (DSS1). Customers need a flexible communications system that can provide increasingly-sophisticated services. In response to this need, network operators throughout the world are implementing integrated services digital networks (ISDNs) that provide customer-to-customer connections using digital transmission links and software-controlled exchanges. The DSS1 is defined to meet the demanding requirement of providing flexible signalling for customers and is a step towards the objective of providing an unimpeded signalling-transfer capability.

Inspec keywords: telecommunication links; digital subscriber lines; telecommunication signalling; ISDN; telecommunication exchanges

Other keywords: DSS1 data-link layer; DSS1 physical-link layer; flexible communication system; digital transmission links; software-controlled exchange; digital subscriber signalling system No.1; ISDN; customer-to-customer connection; integrated services digital networks; unimpeded signalling-transfer capability

Subjects: ISDN

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