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Hacking VoIP
Hacking VoIP,Protocols, Attacks, and Countermeasures
Voice over Internet Protocol (VoIP) networks, the technology used to place phone calls through the Internet, suffer from the same security holes as standard IP networks. This book reviews the many possible VoIP attacks, and discusses the best defenses against them.
by Himanshu Dwivedi
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VoIP For Dummies
VoIP For Dummies,
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
by Timothy V. Kelly
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Switching to VoIP
Switching to VoIP,
Based on real-world experience, this handy solutions manual addresses the most common VoIP migration challenges. Find out how to build your own VoIP system, install it, and begin making calls - so you can start saving today. Ideal for IT managers, network engineers, and system administrators.
by Ted Wallingford
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Linux Network Administrator's Guide
Linux Network Administrator's Guide,
This introduction to networking on Linux now covers firewalls, including the use of ipchains and Netfilter, masquerading, and accounting. Other new topics in this second edition include Novell (NCP/IPX) support and INN (news administration).
by Olaf Kirch
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Ecommerce Guide Ebook
Ecommerce Guide Ebook,

by Murtaza Lanewala
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Voice Over IP Fundamentals
Voice Over IP Fundamentals,
Understand the basics of enterprise and public telephony networking, IP networking, and how voice is transported over IP networks. Learn the various caveats of converging voice and data networks. Examine the basic VoIP signaling protocols (H.323, MGCP/H.248, SIP) and primary legacy voice signaling protocols (ISDN, C7/SS7). Explore how VoIP can run the same applications as the existing telephony system but in a more cost-efficient and scalable manner. Delve into such VoIP topics as jitter, latency, packet loss, codecs, QoS tools, and security.
by Jonathan Davidson
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CVOICE 8.0
CVOICE 8.0,Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (Exam 642-437)

by Andrew Froehlich
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Building a VoIP Network with Nortel's Multimedia Communication Server 5100
Building a VoIP Network with Nortel's Multimedia Communication Server 5100,
The first book published on deploying Voice Over IP (VoIP) products from Nortel Networks, the largest supplier of voice products in the world. This book begins with a discussion of the current protocols used for transmitting converged data over IP as well as an overview of Nortel’s hardware and software solutions for converged networks. In this section, readers will learn how H.323 allows dissimilar communication devices to communicate with each other, and how SIP (Session Initiation Protocol) is used to establish, modify, and terminate multimedia sessions including VOIP telephone calls. This section next introduces the reader to the Multimedia Concentration Server 5100, and Nortel’s entire suite of Multimedia Communications Portfolio (MCP) products. The remaining chapters of the book teach the reader how to design, install, configure, and troubleshoot the entire Nortel product line. · If you are tasked with designing, installing, configuring, and troubleshooting a converged network built with Nortel's Multimedia Concentration Server 5100, and Multimedia Communications Portfolio (MCP) products, then this is the only book you need. · It shows how you'll be able to design, build, secure, and maintaining a cutting-edge converged network to satisfy all of your business requirements · Also covers how to secure your entire multimedia network from malicious attacks
by Larry Chaffin
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Sip
Sip,Understanding the Session Initiation Protocol
This cutting-edge book shows you how SIP provides a highly-scalable and cost-effective way to offer new and exciting telecommunication feature sets, helping you design your OC next generationOCO network and develop new applications and software stacks. Other key discussions include SIP as a key component in the Internet multimedia conferencing architecture, request and response messages, devices in a typical network, types of servers, SIP headers, comparisons with existing signaling protocols including H.323, related protocols SDP (Session Description Protocol) and RTP (Real-time Transport Protocol), and the future direction of SIP. Detailed call flow diagrams illustrate how this technology works with other protocols such as H.323 and ISUP. Moreover, this book covers SIP RFC 3261 and the complete set of SIP extension RFCs."
by Alan B. Johnston
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The Internet and Email For The Over 50s: Teach Yourself
The Internet and Email For The Over 50s: Teach Yourself,
Do you feel that you have been left behind in the technological revolution? Are you looking for sound, practical advice on getting the most out of email and the Internet? If so, The Internet and email for the Over 50s is exactly what you need! Focusing on a wide range of internet and email uses that are of particular relevance and interest to older computer users and the technologically terrified, including travel, shopping and much more, this book even covers online dating! The author approaches the subject in a highly accessible way, covering emailing, making calls over the Internet, shopping online, banking, setting up a blog and searching online. Starting from first basics, it begins with how to choose the right computer, software and peripherals. Made up of of self-contained chapters with the emphasis on what the computer is being used for, rather than scary technical stuff about the software needed, this book covers key areas of interest including: getting started with email, sending and receiving emails and attachments; making phone calls over the internet (VOIP etc), 'chatting' online; reading and writing blogs; keeping your personal information safe online and keeping your computer safe from viruses; finding what you need on the internet, shopping, banking and online auctions. Filled with clear instructions and supported with screenshots, tips, hints and a full 'jargon-busting' glossary, it assumes no prior knowledge of using the internet and email, guiding you with practical good humour to success. NOT GOT MUCH TIME? One, five and ten-minute introductions to key principles to get you started. AUTHOR INSIGHTS Lots of instant help with common problems and quick tips for success, based on the author's many years of experience. TEST YOURSELF Tests in the book and online to keep track of your progress. EXTEND YOUR KNOWLEDGE Extra online articles at www.teachyourself.com to give you a richer understanding of the Internet and email. FIVE THINGS TO REMEMBER Quick refreshers to help you remember the key facts. TRY THIS Innovative exercises illustrate what you've learnt and how to use it.
by Bob Reeves
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