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VoIP For Dummies Kindle Edition

9 customer reviews

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Editorial Reviews


"... Timothy V. Kelly erklärt in diesem Buch, wie die menschliche Stimme über das Internet übertragen wird, wie man ein Telefon mit seinem Computer zu Hause oder dem Firmennetzwerk verbindet und wie man den besten Anbieter findet. Ein praktischer Ratgeber für den Umstieg auf VoIP." (Managementkompass, September 2007)

From the Back Cover

Put your phone system on your computer network and see the savings

See how to get started with VoIP, how it works, and why it saves you money

VoIP is techspeak for "voice over Internet protocol," but it could spell "saving big bucks" for your business! Here's where to get the scoop in plain English. Find out how VoIP can save you money, how voice communication travels online, and how to choose the best way to integrate your phone system with your network at home or at the office.

Discover how to

  • Use VoIP for your business or home phone service
  • Choose the best network type
  • Set up VoIP on a wireless network
  • Understand transports and services
  • Demonstrate VoIP's advantages to management

Product Details

  • File Size: 8280 KB
  • Print Length: 312 pages
  • Publisher: For Dummies; 1 edition (May 29, 2007)
  • Publication Date: May 29, 2007
  • Sold by: Amazon Digital Services, Inc.
  • Language: English
  • ASIN: B004DGJ9AY
  • Text-to-Speech: Enabled
  • X-Ray:
  • Word Wise: Not Enabled
  • Lending: Enabled
  • Enhanced Typesetting: Not Enabled
  • Amazon Best Sellers Rank: #823,799 Paid in Kindle Store (See Top 100 Paid in Kindle Store)
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Customer Reviews

Most Helpful Customer Reviews

24 of 28 people found the following review helpful By SkydivingNerd on October 22, 2005
Format: Paperback Verified Purchase
This book isn't for technical people looking to implement a VoIP solution. It doesn't even define the terms one typically finds in eBay auction descriptions. For example, a typical description for a VoIP phone contains statements like:

- Support popular vocoders including G.723.1 (5.3K/6.3K), G.729A/B, G.711 (a-law and u-law), G.726, G.728, and wide-band G.722 (Model 102D).

- Support Silence Suppression, VAD (Voice Activity Detection), CNG (Comfort Noise Generation), Line Echo Cancellation (G.168), and AGC (Automatic Gain Control)

There is no introduction to this terminology in the book. Only a few paragraphs on SIP and nothing on H.323, SCCP, or IAX. Nothing about setting up gateways or servers. No mention of Asterisk or Digium cards or Skype.

According to the back cover the author is a business professor which is likely the reason for the lack of technical material. I get the impression he is well-versed in traditional telephony systems but his actual hands-on experience with VoIP systems is very limited if it exists at all.
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11 of 12 people found the following review helpful By Thomas Duff HALL OF FAMETOP 1000 REVIEWERVINE VOICE on September 25, 2005
Format: Paperback
Businesses and organizations have the potential of saving large numbers of dollars if they move to running their phone system with Voice over Internet Protocol (VoIP). But to pull it off, you really do need to have an understanding of how it all fits. VoIP For Dummies by Timothy V. Kelly does a nice job of getting you there.


Part 1 - VoIP Basics: Getting Down to Business with VoIP; VoIP: Not Your Father's Telephone Service; Everything You Need to Know About Charges

Part 2 - Taking VoIP to Your Network: Road Map to VoIP Transports and Services; Getting Switched; Going Broadband; We're Dedicated; Going Wireless; Using VoIP on the Internet; Telephones and VoIP

Part 3 - Making the Move to VoIP: Simplifying Cost Management; Locations Galore; Setting Up the Smaller Office; Providing Dollars and Support for VoIP

Part 4 - The Part of Tens: Ten Reasons Why Your Company Should Switch to VoIP; Ten Reasons Why You Should Switch to VoIP at Home; Ten VoIP Myths; Ten VoIP Manufacturers

Part 5 - Appendixes: VoIP Providers; Glossary


I've had the opportunity to read and review a number of VoIP books lately. Many of them have been more geared towards the consumer application of VoIP with services like Skype and Vonage. The business titles have been more into technical details of VoIP implementations in an organization. This book fills a nice niche on the business side. Kelly effectively takes the reader through phone technology, both past and present. Building on that information, he then transitions into how VoIP offers alternative solutions that save a lot of money.
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8 of 9 people found the following review helpful By John Matlock on November 9, 2005
Format: Paperback
The basic technology of the conventional telephone system has been around since the very beginning. You make a call and you get a dedicated communications channel to the instrument at the other end. And in the beginning that was indeed a physical wire. This wiring circuit was physically switched to your phone and stayed there until you hung up. Later Bell Labs was set up to discover how to get more signals through a wire than just one message at a time. Everyone knew that you could get more signal through a wire than just one phone call. And running all that wire was expensive, especially when it ran underwater across the Atlantic.

Step forward a few decades. The internet isn't circuit switched like this. Instead it's packet switched. A packet of data has it's own address as to where it's supposed to go and is thrown up on the network. It makes its way to the intended receiver. That's the way this message got to you. Suppose instead that that packet was a little tidbit of digitized voice. With the proper instrument on the receiving end (let's call it a telephone) the data is converted back into voice.

That's what VOIP is all about. To learn the details, buy this book. It's a complete description of what it's all about from equipment, procedures, and a bit of the background technology.

Only one last comment -- keep at least one regular, old fashioned, hard wired (not cordless) telephone around. If you have a fire, that knocks the power out, you want something that will let you call 911. Note that the authors say the same thing on pages 44 & 225.

Well, one more last thing. The cost savings on VOIP are difficult to estimate. SBC just came around here and offered 500 minutes a month of nationwide long distance for $10 a month. But if Grandma or the Grandkids live overseas, the cost savings are great. The book talks about this on page 50.
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2 of 2 people found the following review helpful By Bob Konigsberg on September 18, 2008
Format: Paperback
This book is focused on the key elements of telephony and the migration to VOIP - primarily as a cost saving measure. The first 2/3 of the book deal with the VOIP technology - as an adjunct to and eventual replacement for traditional (legacy) telephony. By the 2/3 point, the author is talking about cost analysis, benefits and justification.

I would more likely title this book "VOIP for management". This is not a put-down or insult, as the book's primary objective is to educate the mostly non-technical person on what VOIP is, and how it might best fit into an existing picture, and one moving forward.

Being primarily technical myself, this book was good as a preliminary introduction to a subject that I wasn't familiar with - but I immediately moved on to the O'Reilly books on the subject - "Switching to VOIP" by Ted Wallingford and "Asterisk" (Leif Madsen, et al). Someone who is responsible for managing such a transition would find it much more useful than I did.
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