Voice over IP First-Step

ISBN: 1587201569
EAN: 2147483647

Year: 2005
Pages: 138

Authors: Kevin Wallace

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Voice over IP First-Step
Table of Contents
Copyright
About the Author
About the Technical Reviewers
Acknowledgments
Icons Used in This Book
Introduction
How This Book Is Organized
Who Ought to Read This Book
Stuff You ll Find in This Book
For More Information. . .
Chapter 1. Touring the History Museum of Telephony
Dissecting a Telephony Network
The Public Switched Telephone Network: The Phone System That You Grew Up With
Private Branch Exchanges: How Big Businesses Talk
Key Systems: How Small Businesses Talk
Ringing, Dial Tone, and Other Bells and Whistles
Case Study: Your Turn to Put the Pieces in Place
Chapter Summary
Chapter Review Questions
Chapter 2. Making Waves: Turning Your Voice into 1s and 0s
Chopping Your Voice into Byte-Size Pieces
Squeezing Your Voice into a Smaller Package
Deciding How Much Bandwidth Is Enough
Case Study: Your Turn to Choose the Bandwidth
Chapter Summary
Chapter Review Questions
Chapter 3. Paving the Pathway to a Voice over IP Network
Competing with the Reliability of Existing Phone Systems
Replacing PBX Trunks: Out with the Old, In with the New
Connecting a Router to a Phone Line
Connecting a Router to a Digital Circuit
Voice over IP in the Home
Case Study: Your Turn to Put the Pieces of the Puzzle Together
Chapter Summary
Chapter Review Questions
Chapter 4. Meet the Brain of the Voice over IP Network
Replacing Your Old Phone Switch with Cisco CallManager
There Is Power in Numbers: Grouping Cisco CallManagers Together
Designers Challenge: Placing Cisco CallManagers in the Network
Setting Guidelines for Who Can Make Calls
Replacing Old Phones with IP Phones
Selecting Features for IP Phones
The Cone of Silence: Securing Voice
A Picture Is Worth a Thousand Words: Adding Video to Voice Calls
Cisco CallManager in the Express Lane
Case Study: Your Turn to Do an Extreme Phone System Makeover
Chapter Summary
Chapter Review Questions
Chapter 5. Speaking the Gateways Languages
Gateway Protocols: The Languages of Love
The Tried and True Language: H.323
Cisco s Very Own: MGCP
The New Kid on the Block: SIP
Case Study: Your Turn to Be Trilingual
Chapter Summary
Chapter Review Questions
Chapter 6. Why Quality Matters
Too Many Swimmers in the Bandwidth Pool
Being Politically Incorrect: Treating Special Traffic in a Special Way
Giving Voice Top Priority
Feeling a Little Congested?
Setting Speed Limits on Traffic
Doing More with Less (Bandwidth)
Automatically Configuring QoS with AutoQoS
Case Study: Your Turn to Use Your New Quality of Service Tools
Chapter Summary
Chapter Review Questions
Chapter 7. VoIP Supporting Roles
Leave a Message at the Beep: the Cisco Answer to Unified Messaging
Have Your People Call My People: Creating a Conference Call
Your Call Is Very Important to Us: The Cisco Answer to Call Centers
Case Study: Your Turn to Pick Add-On Features
Chapter Summary
Review Questions
Appendix A. Answers to Chapter Review Questions
Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Chapter 7
Appendix B. Next Steps: Where Do I Go From Here?
Basic Router and Switch Configuration
IP Telephony Certifications
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Index
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