Telephony eBooks

Learn how to set up and use TrixBox (formally known as Asterisk@Home) as a traditional and Internet telephone system. The book is written in an easy to follow walk-through style, building up concepts step by step, before guiding you carefully through the planning, deployment, and management of your telephone system. Because the book covers the concepts and practices of both telephony and Asterisk, it is suitable for both professional and home users with no prior telecom experience. It's ideal for any user wishing to set up a telephony system for individual or small business usage. No previous knowledge of Trixbox or networking is required, although some basic knowledge of PBX and Linux would be an advantage....

This book is a step-by-step tutorial with clear instructions and screenshots to guide you through the creation of a complete, cost-effective telephony system. You will start with installation, walk through the different features, and see how to manage and maintain the system. If you are an IT professional or enthusiast who is interested in quickly getting a powerful telephony system up and running using the free and open source application FreeSWITCH, this book is for you. Telephony experience will be helpful, but is not required....

This book shows how to build a telephony system for your home or business using the free and open source application, Asterisk. 'Building a Telephony System with Asterisk' takes you step-by-step through the process of installing and configuring Asterisk. It shows you how to make a deployment plan, and how to create a dial plan. The book also presents example configurations for using Asterisk in three different scenarios: for small and home offices, small businesses, and Hosted PBX. With an engaging style and excellent way of presenting information, this book makes a complicated subject very easy to understand. This book is aimed at anyone who is interested in building a powerful telephony system using the free and open source application, Asterisk, w...

More and more businesses today have their receive phone service through Internet instead of local phone company lines. Many businesses are also using their internal local and wide-area network infrastructure to replace legacy enterprise telephone networks. This migration to a single network carrying voice and data is called convergence, and it's revolutionizing the world of telecommunications by slashing costs and empowering users. The technology of families driving this convergence is called VoIP, or Voice over IP.VoIP has advanced Internet-based telephony to a viable solution, piquing the interest of companies small and large. The primary reason for migrating to VoIP is cost, as it equalizes the costs of long distance calls, local calls, and e-mail...

Sidestep VoIP Catastrophe the Foolproof Hacking Exposed WayThis book illuminates how remote users can probe, sniff, and modify your phones, phone switches, and networks that offer VoIP services. Most importantly, the authors offer solutions to mitigate the risk of deploying VoIP technologies. --Ron Gula, CTO of Tenable Network SecurityBlock debilitating VoIP attacks by learning how to look at your network and devices through the eyes of the malicious intruder. Hacking Exposed VoIP shows you, step-by-step, how online criminals perform reconnaissance, gain access, steal data, and penetrate vulnerable systems. All hardware-specific and network-centered security issues are covered alongside detailed countermeasures, in-depth examples, and hands-on implem...