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Voice over Internet Protocol (VoIP) is gaining a lot of attention these days, as more companies and individuals switch from standard telephone service to phone service via the Internet. The reason is simple: A single network to carry voice and data is easier to scale, maintain, and administer. As an added bonus, it’s also cheaper, because VoIP is free of the endless government regulations and tariffs imposed upon phone companies.

VoIP is simply overflowing with hack potential, and VoIP Hacks is the practical guide from O’Reilly that presents these possibilities to you. It provides dozens of hands-on projects for building a VoIP network, showing you how to tweak and customize a multitude of exciting things to get the job done. Along the way, you’ll also learn which standards and practices work best for your particular environment. Among the quick and clever solutions showcased in the book are those for:

• gauging VoIP readiness on an enterprise network
• using SIP, H.323, and other signaling specifications
• providing low-layer security in a VoIP environment
• employing IP hardphones, analog telephone adapters, and softPBX servers
• dealing with and avoiding the most common VoIP deployment mistakes

In reality, VoIP Hacks contains only a small subset of VoIP knowledge-enough to serve as an introduction to the world of VoIP and teach you how to use it to save money, be more productive, or just impress your friends. If you love to tinker and optimize, this is the one technology, and the one book, you must investigate.

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VoIP For Dummies paperback discount offer allows you to save $10.20 on VoIP For Dummies. This promotion is available from this link. See also promotions from other seller through the comparison chart below.

About 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

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Professional WordPress Plugin Development discount book offer lets you save big on Professional WordPress Plugin Development when you buy it online. Find the cheapest bargain on this book by referring to the comparison chart below.

As one of the most popular open source content management systems available today, WordPress boasts a framework that allows you to easily customize and extend it through plugins. This comprehensive Professional WordPress Plugin Development book shows you how plugins work, reviews the tools and APIs available in WordPress, and demonstrates how to extend the functionality of WordPress with plugins.

The trio of established authors provides a practical, solutions-based approach along with a collection of timely examples and plenty of code, all aimed at clearly explaining how to create a plugin file, work with users, integrate widgets, add menus and submenus, secure your plugins, and more. You will quickly come to understand how to develop custom plugins so that you can take WordPress to the next corporate and enterprise level.

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Oracle is an enormous system, with myriad technologies, options, and releases. Most users-even experienced developers and database administrators-find it difficult to get a handle on the full scope of the Oracle database. And, as each new Oracle version is released, users find themselves under increasing pressure to learn about a whole range of new technologies. The latest challenge is Oracle Database 11g.

This book distills an enormous amount of information about Oracle into a compact, easy-to-read volume filled with focused text, illustrations, and helpful hints. It contains chapters on:

• Oracle products, options, data structures, and overall architecture for Oracle Database 11g, as well as earlier releases (Oracle Database 10g, Oracle9i, and Oracle8i)
• Installing, running, managing, monitoring, networking, and tuning Oracle, including Enterprise Manager (EM) and Oracle’s self-tuning and management capabilities; and using Oracle security, auditing, and compliance (a new chapter in this edition)
• Multiuser concurrency, data warehouses, distributed databases, online transaction processing (OLTP), high availability, and hardware architectures (e.g., SMP, clusters, NUMA, and grid computing)
• Features beyond the Oracle database: Oracle Application Express, Fusion Middleware (including Oracle Application Server), and database SOA support as a Web services provider

The latest Oracle Database 11g features: query result set caching, Automatic Memory Management, the Real Application Testing, Advanced Compression, Total Recall, and Active Data Guard Option Options, changes to the OLAP Option (transparently accessed and managed as materialized views), the Flashback transaction command, transparent data encryption, the Support Workbench (and diagnosability infrastructure), and partitioning enhancements (including interval and new composite types)

For new Oracle users, DBAs, developers, and managers, Oracle Essentials provides an invaluable, all-in-one introduction to the full range of Oracle features and technologies, including the just-released Oracle Database 11g features. But even if you already have a library full of Oracle documentation, you’ll find that this compact book is the one you turn to, again and again, as your one-stop, truly essential reference.

“Oracle Essentials gives a clear explanation of the key database concepts and architecture underlying the Oracle database. It’s a great reference for anyone doing development or management of Oracle databases.”

–Andrew Mendelsohn, Senior Vice President, Database Server Technologies, Oracle Corporation

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So you’re in charge of implementing a VoIP phone system for your organization? VoIP Deployment For Dummies is a crash course in Voice over Internet Protocol implementation!

Here’s how to analyze your network and implement a VoIP phone system, manage and maintain it, keep it secure, and troubleshoot problems. You’ll learn how to plan the rollout, work with Session Initiation Protocol (SIP), handle fax issues, and keep your users happy.

• Understand how VoIP works, common misconceptions about it, and the pros and cons for your organization
• Compare and comprehend hardware and software choices
• Discover the options for touch tones and faxing via VoIP systems
• Analyze network devices, IP addresses, connections to remote sites, and other aspects that will affect VoIP implementation
• Draw up a test plan, check out both voice and fax transmission, get a report, and schedule the installation
• Investigate SIP call generation, identify the elements, understand cancelled calls, and re-INVITE calls
• Troubleshoot your system, identify call variables, trace the source of a problem, manage trouble tickets, and resolve failures
• Manage latency, jitter, and flap, and take advantage of Wireshark
• Find out what to expect when your system goes live

Written by an expert with extensive real-world experience in VoIP implementation and management, VoIP Deployment For Dummies provides the know-how you need. You’ll be able to implement your system and manage any issues proactively, which is sure to look good to your boss!

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