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Internetworking Technologies Handbook, Fourth Edition by Cisco Systems, Inc.

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Chapter 15. Dialup Technology

Objectives

  • Describe the history of dialup technology.

  • Describe dialup connectivity technology.

  • Describe the different types of dialup methods.

  • Discuss the benefits (and drawbacks) of different dialup technologies.

Introduction

Dialup is simply the application of the Public Switched Telephone Network (PSTN) to carry data on behalf of the end user. It involves a customer premises equipment (CPE) device sending the telephone switch a phone number to direct a connection to. The AS3600, AS5200, AS5300, and AS5800 are all examples of routers that have the capability to run a PRI along with banks of digital modems. The AS2511, on the other hand, is an example of a router that communicates with external modems.

Since the time of ...

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