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Designing ISDN Internetworks

Overview The Public Switched Telephone Network (PSTN) has been transformed into an Integrated Systems Digital Network (ISDN). Implementation of Signalling System 7 (SS7) in the PSTN backbone has made possible such widespread services as Caller-ID and Dialed-Number delivery, 800 Directory Number lookup, Calling Card services, and Digital Data Services. Using BRI and PRI services, ISDN call switching can be extended to customer premises equipment (CPE) and provide end-to-end digital paths. Previous to ISDN availability, data connectivity over the Public Switched Telephone Network (PSTN) was via Plain Old Telephone Service (POTS) using analog modems. Connectivity over ISDN offers the internetworking designer increased bandwidth, reduced call setup time, reduced latency, and lower signal/noise ratios. ISDN is now being deployed rapidly in numerous applications including Dial-on-Demand Routing, Dial Backup, SOHO and ROBO connectivity, and modem pool aggregation. This chapter covers the design of these applications. The purpose of this chapter is to discuss the design issues associated with building ISDN internetworks.

Further White Paper Details
Publisher	Institute for Network Professionals	File Format	HTML & PDF
Date Published	January 1995	Downloads	1
Format	White Papers
Topics	Industry Standard Protocols

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