Chapter 4. xDSL Access Networks

This chapter covers the following topics:

  • Current Telco Services

  • Digital Loop Carrier Overview

  • xDSL Variations

  • Asymmetric DSL

  • G.Lite

  • Very High Data Rate DSL

  • High Data Rate DSL

  • ISDN Digital Subscriber Line

  • Single-Line Digital Subscriber Line

  • Early Provisioning for xDSLs

  • Factors in Choosing Which DSL to Offer

  • Technical Challenges to xDSL

  • Industry Challenges to xDSL

  • Success Factors

  • Summary

Cable operators offer their HFC networks for RBB services. How are the telephone companies to counter? Some telcos have toyed with the idea of building HFC networks of their own or buying cable operators. Among these have been PacBell, Telecom Australia, and Ameritech. However, most telcos prefer to capitalize on their existing multibillion-dollar ...

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