by Timothy Kelly
Foreword by Don Peterson
Chairman and Chief Executive Officer,Avaya Inc.
 |
| VoIP for Dummies |
Timothy Kelly is an Information Systems technology professional with more
than twenty-five years of experience. His background includes the design of
many telecommunications network enterprises, from small simple networks
that support a single building location to large multilocation networks running
integrated data, voice, and videoconferencing applications.
From 1992 until 2002, Tim was principal consultant for Network Technology
Services, a Pittsburgh-based company. He has completed network design
engagements for countless organizations, including Alcoa, Blue Cross, Mercy
Health System, Mine Safety Health Administration, the U. S. Navy, South Hills
Health System, Westinghouse Telecommunications, ARBROS Communications,
The Community Builders, and Lucent Technologies. Kelly is a certified
ORACLE DBA Master and Network+ Professional.
Tim is an honors graduate of Duquesne University. He went on to complete the
MSIS and post-graduate certificate in Telecommunications at the University of
Pittsburgh. His terminal degree is a Doctor of Science in Information Systems
from Robert Morris University. His research focus was the effects that converging
technology networks have on organizations and people, an area in which he
is well published and has made numerous presentations before academic and
corporate bodies.
Tim Kelly is author of Bits & Bytes Y2K & Beyond and is well known for his
consults and media appearances during the years and final months preceding
the year 2000. He was dubbed a “calming influence” on the Y2K scare by the
Pittsburgh media.
From 1983 to 2004, he taught Information Systems Technology courses for
local Pittsburgh schools, including Duquesne University, Indiana University of
Pennsylvania, and Robert Morris University. In 2003, with the help of former
associates, he started the National Center for Converging Technology
Research, an organization dedicated to helping other organizations understand
how best to apply converging technologies such as VoIP in their business
environments. In Fall 2004, he began teaching full-time for the University
of North Carolina at ECSU.
Tim Kelly will be co-authoring a VoIP solutions book that defines the latest
convergence options for running data, voice, and video applications —
the “triple play.” The book will provide current coverage on the latest wireless
forms of networking. The effect on business of WiMax and other fixedwireless
alternatives will be treated. Tim believes the solution to the triple
play model lies with resolving the dilemma of inadequate bandwidth and that
VoIP over WiMax and WiFi show how close we are to cracking this nut. The
next few years for VoIP should be really exciting.
Author’s Acknowledgments
I would like to thank all of my friends at Robert Morris University. They gave
me a great deal to think about, chief among which was the need to put VoIP
convergence into a frame that the average reader could understand. In our
discussions about my ideas, I would constantly hear “think Dummies.” With
the dramatic changes in the VoIP convergence marketplace in 2004, I knew
the time was right to not only think Dummies but to also write Dummies.
I would like to express a truly heartfelt thanks to Greg Croy at Wiley Publishing.
Greg believed in my ideas and supported me through the entire process. It is
not easy to become a For Dummies author, but the guidance from Greg
enriched the process while making it possible and enjoyable. I also want to
thank Leah Cameron, who conducted the first nuts-and-bolts review of my
work. Her feedback was invaluable. I want to thank Nancy Stevenson for her
help in finalizing the Table of Contents.
I want to thank Allen Wyatt and Dave Tegtmeier, my preproduction editorial
team. Assembling a group of this magnitude was no small challenge as professionals
of this caliber are always in demand. But they all found the time to
take on VoIP For Dummies. Words cannot express my appreciation.
I want to thank Chuck Mance, a friend of mine who lent a hand with drafting
Chapter 14. Chuck is an experienced, competent IT professional. I greatly
appreciate his contributions.
I also want to thank the other people who engaged my ideas about VoIP in
varying degrees: Steve Phillips, Rich Krauland, all my friends at Avaya, Cisco
Systems, Verizon Communications, Matt Kelly, Greg Chmiel, and all of my students and clients.
To my wife Patty (Tushka), who proofed many initial drafts but, more importantly,
also helped me get to church on time and provided emotional support
throughout the process.
Last but far from least, I want to thank my mother, Mary (Andreiczyk) Kelly,
who gave me faith, love, and perseverance. Mom turns 80 in a few short months.
Contents at a Glance
Foreword
Introduction
Part I: VoIP Basics .............9
Chapter 1: Getting Down to Business with VoIP .................11
Chapter 2: VoIP: Not Your Father’s Telephone Service .................21
Chapter 3: Everything You Need to Know About Charges ............41
Part II: Taking VoIP to Your Network .......61
Chapter 4: Road Map to VoIP Transports and Services .............63
Chapter 5: Getting Switched ...................................81
Chapter 6: Going Broadband ..................................93
Chapter 7: We’re Dedicated ...........................................105
Chapter 8: Going Wireless ......................................119
Chapter 9: Using VoIP on the Internet ......................129
Chapter 10: Telephones and VoIP ....................................141
Part III: Making the Move to VoIP .............153
Chapter 11: Simplifying Cost Management ....................155
Chapter 12: Locations Galore ..............................173
Chapter 13: Setting Up the Smaller Office ....................187
Chapter 14: Providing Dollars and Support for VoIP .........199
Part IV: The Part of Tens ................209
Chapter 15: Ten Reasons Why Your Company Should Switch to VoIP .............211
Chapter 16: Ten Reasons Why You Should Switch to VoIP at Home ...............217
Chapter 17: Ten VoIP Myths .............................................221
Chapter 18: Ten VoIP Manufacturers ................................227
Part V: Appendixes .............233
Appendix A: VoIP Providers ............................235
Appendix B: Glossary ........................................239
Index .................................259
Table of Contents
Foreword........xxi
Introduction ...........1
About This Book
Conventions Used in This Book
What You’re Not to Read
Foolish Assumptions
How This Book Is Organized
Part I: VoIP Basics
Part II: Taking VoIP to Your Network
Part III: Making the Move to VoIP
Part IV: The Part of Tens
Part V: Appendixes
Icons Used in This Book
Where to Go from Here
Part I: VoIP Basics
Chapter 1: Getting Down to Business with VoIP
In the Beginning, There Was POTS
From POTS to Packets
Eye for IP Telephony
Making internal calls
Making external calls
Gaining Flexibility with VoIP
Looking at the TCP/IP Model
TCP/IP layers
TCP/IP differences
Chapter 2: VoIP: Not Your Father’s Telephone Service
Mr. Bell
Analog Telephone Circuits
Telephony Goes Digital
Combining Analog and Digital
Digital Telephony Invades PSTN Territory
The circuit-switched network gets organized
The digital services carrier network
War Breaks Out Between Circuits and Packets
Private Telephone Systems Reduce POTS Line Costs
The Centrex model
The KTS and PBX models
Private Systems versus VoIP
Converging Networks
Chapter 3: Everything You Need to Know About Charges
Accessing the Network
Service Categories Cost You Big Time
Paying the local piper
Going the distance with intralata rates
Intrastate service rates
Interstate carrier service
International carrier service
Summing up carrier services
Saving with VoIP
Good news for the family budget
Taking savings to the office
Toll-bypass: Saving with calls at a distance
Add-on recurring costs
VoIP Savings: A Case Study
Analyzing the client’s usage
The VoIP solution
Applying VoIP to your situation
Part II: Taking VoIP to Your Network
Chapter 4: Road Map to VoIP Transports and Services
CSI: Telephony
Choosing a Transport
The Five Golden Rings of CSI
The PSTN CSI
The DS CSI
The optical carrier CSI
The hybrid fiber-cable CSI
The wireless CSI
Summing up the CSIs
How VoIP and the Internet Fit the CSI Picture
VoIP over Internet
VoIP in the corporate sector
VoIP in the consumer sector
Chapter 5: Getting Switched
Understanding How the PSTN Supports VoIP
The PSTN-VoIP baseline
The POTS transport
The ISDN transport
The DSL transport
Controlling Calls
Signaling system 7 (SS7)
Call control and VoIP
Delays and errors
Quality and VoIP
Network delay
Poor compression
Signal attenuation
Chapter 6: Going Broadband
Broadband Transmission Methods
Asymmetric
Symmetric
VoIP with Your Cable Modem
VoIP shares something with your TV
Adding VoIP
Setting up VoIP on a cable modem
Possible cable modem problems
VoIP Through Your DSL Connection
POTS plus!
Setting up VoIP on your DSL line
Potential DSL problems
VoIP over POTS
Chapter 7: We’re Dedicated
Basics of Dedicated Transports
Bandwidth and speed
Costs of dedication .
High-quality VoIP calls
Types of Dedication
The DS transports
The OC transports
Converging Dedicated and Switched Networks
Managing Bandwidth
Dedicating channels to applications
Dynamic bandwidth allocation
Keeping a Switched Line
Chapter 8: Going Wireless
Why WiFi?
Ethernet networking and VoIP
Examining the IEEE 802.11 standard
Moving up to wireless
Adding VoIP to the Wireless Network
IP soft phones for pocket PCs
Wireless extension to cellular
Taking VoIP to the WiMax
Graduating to IEEE 802.16
Putting WiMax to use
Getting Hip to WiSIP
SIP enables smoother conversions
Using SIP today
Chapter 9: Using VoIP on the Internet
Network Options Affect Quality of Service
Internet Protocols and Quality of Service
ISPs make the Internet go round
Examining protocol layers
Firewalls for Security
Connecting Through a VPN
VPN costs
Implementing a VPN
Chapter 10: Telephones and VoIP
Running Down the Three Flavors of VoIP Phones
VoIP Hard Phones
Basic hard phones
Intermediate hard phones
Advanced hard phones
Features supported
VoIP Soft Phones
Stationary computers
Portable computers
Features supported
VoIP Wireless Phones
Maximizing Your Current Telephone Investment
Upgrading older telephone systems
Using older telephones on the new VoIP network
Part III: Making the Move to VoIP
Chapter 11: Simplifying Cost Management
VoIP Comes and the Charges Go
Reducing or eliminating phone lines
Take off your add-on charges
Yippee! Deregulating your telephone costs
Free call features
The Final Four Meet VoIP
Goodbye POTS, hello VoIP
Goodbye Centrex, hello VoIP-Centrex
Goodbye KTS, hello VoIP
Goodbye PBX, hello VoIP-PBX
Unified Networks
Larry’s story
Joann’s story
Convincing Your Boss
A seamless transition
Meeting your future with VoIP
Bandwidth on demand
Chapter 12: Locations Galore
Challenges of Multiple Locations
Evaluating Your Existing Networks
Developing a Plan
Designing a VoIP solution
Putting your plan into action
Staging the Implementation
Plug-and-play
Managing downtime
Reviewing the Effect
Features and costs of the new VoIP network
It’s not just a new way to do circuit-switched
Bottom-Line Analysis
Chapter 13: Setting Up the Smaller Office
Is VoIP for You?
Figuring out those contracts
Current costs meet long-term plans
Analyze bills and contracts
Evaluating Existing Networks
Breaking down the costs of POTS telephony
Breaking down the costs of computer networking
Putting VoIP to Work
Supporting your telephony calls
Understanding VoIP savings
Financial Analysis
Chapter 14: Providing Dollars and Support
Evaluating VoIP Costs
Gathering cost data
Performing comparisons
Making the Investment
Cost-Effective VoIP Designs
Providing Support
In-house
Partnering
Keeping Up with Technology
Part IV: The Part of Tens
Chapter 15: Ten Reasons Why Your Company Should Switch to VoIP
Changing Direction of Telephony Industry
Feature-Rich, Cost-Effective Alternatives
Existing Investment Protection
Seamless Maintenance and Management
Flexibility and Portability
Enhanced Network Management
Better Allocation of Personnel
Productivity Applications
Better Bandwidth Utilization
Reduced Costs
Chapter 16: Ten Reasons Why You Should Switch to VoIP at Home
One Carrier
One Bill
Free Local Service
Reduced or Eliminated Toll Service Charges
Reduced International Charges
More Bandwidth
Enhanced Internet Access
More Ports to Connect More Phones and Computers
Wireless Service in Your Home
Videoconferencing
Chapter 17: Ten VoIP Myths
VoIP Runs Only on the Internet
POTS Is Cheaper
POTS Is Faster
The Quality of Service Is Suspect
VoIP-Enabled Phones Are Pricey
VoIP Calls Can Be Intercepted
911 Calls May Not Work
VoIP Is Not Ready for Prime Time
VoIP Call Features Are Expensive
You Have to Throw Out All Your Old PBX Telephones
Chapter 18: Ten VoIP Manufacturers
Avaya
Cisco Systems
Siemens
Alcatel
Nortel
Mitel
NEC
3COM
Shoretel
Inter-Tel
Part V: Appendixes
Appendix A: VoIP Providers
Appendix B: Glossary
Index
Introduction
VoIP (pronounced voyp) is the name of a new communications technology
that changes the meaning of the phrase telephone call. VoIP stands for
voice over Internet protocol, and it means “voice transmitted over a computer network.”
Internet protocol (IP) networking is supported by all sorts of networks: corporate,
private, public, cable, and even wireless networks. Don’t be fooled by
the “Internet” part of the acronym. VoIP runs over any type of network.
Currently, in the corporate sector, the private dedicated network option is
the preferred type. For the telecommuter or home user, the hands-down favorite is broadband.
You may be wondering what all this means in terms of your actual telephone.
This is the really cool part: You can access your account on the VoIP network
by a desktop telephone, a wireless IP phone (similar to a cell phone), or the
soft screen dialpad of your laptop or desktop computer.
With VoIP, you can literally pick up your things and move to another location,
within your office building or around the world, without having to forward
your calls to a new telephone. VoIP’s entirely portable!
What’s more, you can access the Web from your IP phone, enabling you to get
important (or not so important) announcements and e-mail on the go. It’s like
having a pocket PC and a cell phone rolled into one, specifically designed for your network.
As you can imagine, VoIP is a win-win for everyone. The added flexibility and
quicker response times translate into greater customer satisfaction and
increased productivity throughout your organization.
About This Book
VoIP For Dummies is written for anyone who wants to reduce or eliminate
their toll charges while upgrading the level of computer networking services
and calling features they receive. Here you discover not only what VoIP is but
how you can implement it in your company or home. (You’ll even find out
whether VoIP makes a lot of sense for your situation.)
VoIP has particular appeal to those who want to use their computer network
to carry their telephone calls, thereby saving the expense of running different networks for each.
If you’re a consumer running broadband Internet services and you have significant
toll charges each month, you should look into VoIP to make your toll
calls. With VoIP running on your broadband line, you can save money each
month by reducing your toll costs while still maintaining your traditional telephone
service for local calls.
If you’re a manager who needs to decide about support or recommend
whether to make the switch to VoIP, or if you’re an IT person looking to help
your boss make an informed decision about integrated networking, this book
provides an excellent place for you to begin.
I explain how VoIP works and how it compares to telecommunications technology
that was previously considered irreplaceable. By the time you finish
Part III, you’ll see why many businesses throughout the world and consumers
in the United States have turned to VoIP and integrated networking as their
main system for data, voice, and video.
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Product details
Price
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File Size
| 8,548 KB |
Pages
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313 p |
File Type
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PDF format |
ISBN-13
ISBN-10 | 978-0-7645-8843-3 0-7645-8843-5 |
Copyright
| 2005 by Wiley Publishing, Inc |
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