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CCIE Fundamentals: Network Design and Case Studies, Second Edition by Cisco Systems, Inc.

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Chapter 21. Using ISDN Effectively in Multiprotocol Networks

Edited by Salman Asad

As telephone companies make Integrated Services Digital Network (ISDN) services available, ISDN is becoming an increasingly popular way to connect remote sites. This case study covers the following ISDN scenarios:

  • Configuring DDR over ISDN—. This telecommuting scenario describes the configuration of home sites that use ISDN to connect to a central company network and shows you how to use calling line identification numbers to prevent unauthorized access to the central network.

  • Configuring Snapshot Routing over ISDN—. Snapshot routing provides cost-effective access to a central company network from branch or home offices. Snapshot routing is used to upgrade the telecommuting ...

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