Book description
Your first step into the world of IP telephony
No IP telephony experience required
Includes clear and easily understood explanations
Makes learning easy
Your first step to the world of IP telephony begins here!
Learn how voice and data communications merge in voice-over-IP technology
Use this reader-friendly guide to understand the benefits of this technology
Explore real-life applications and theories through case studies in every chapter
Welcome to the world of voice over IP
We use either a telephone or e-mail for much of our day-to-day communication. Today, these two worlds are merging, and companies can place phone calls over their existing data network infrastructures using a technology called voice over IP (VoIP).
No prior experience with VoIP technology is required
Voice over IP First-Step is anyone’s introduction to the world of VoIP networks. The concepts in this book are presented in plain language, so you don’t need in-depth background knowledge to comprehend the technologies covered. If you work with data networks, if you work with telephony networks, if you’re a home user interested in how VoIP can reduce your monthly phone bill, or if the concept of VoIP simply intrigues you, this book is for you.
Table of contents
- Copyright
- About the Author
- About the Technical Reviewers
- Acknowledgments
- Icons Used in This Book
- Introduction
-
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
- 2. Making Waves: Turning Your Voice into 1s and 0s
-
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
-
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
- 5. Speaking the Gateways’ Languages
-
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
- 7. VoIP Supporting Roles
- A. Answers to Chapter Review Questions
- B. Next Steps: Where Do I Go From Here?
- Glossary A
Product information
- Title: Voice over IP First-Step
- Author(s):
- Release date: December 2005
- Publisher(s): Cisco Press
- ISBN: 9781587201561
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