Coming back to the customer's network, how do we ensure that it will carry the expected voice traffic without excessive latency or jitter, and with adequate availability? It's difficult to guarantee a high level of network availability to a customer without knowing what you have in the first place. While not usually being up to the standard of voice networks in terms of reliability and call quality, Ethernet-based IP network are so prevalent these days that many SMEs (Small and Medium Enterprises) follow the well-worn adage that if it ain't broke then don't fix it, even if the stability of the network is not ideal. Remember, though, that we are now planning to introduce a system that demands the highest levels of availability. The 99.5% uptime figure that the customer might have deemed perfectly adequate in the context of their data network, is nowhere near high enough for a telephone system, equating as it does to 18 seconds of silence in an average hour. Even worse is...
Asterisk 1.4 - the Professional's Guide
Asterisk 1.4 - the Professional's Guide
Overview of this book
Asterisk is the leading Open Source Telephony application and PBX software solution. It represents an effective, easy-to-administer, and accessible platform for running enterprise telephony requirements. The real world, however, offers numerous hurdles when running Asterisk in the commercial environment including call routing, resilience, or integrating Asterisk with other systems. This book will show you some of the ways to overcome these problems.
As the follow-up to Packt's highly successful 2005 title Building Telephony Systems with Asterisk, this book presents the collected wisdom of Asterisk Professionals in the commercial environment.
Aimed at Administrators and Asterisk Consultants who are comfortable with the basics of Asterisk operation and installation, this book covers numerous hands-on topics such as Call Routing, Network Considerations, Scalability, and Resilience ñ all the while providing practical solutions and suggestions. It also covers more business-related areas like Billing Solutions and a Winning Sales Technique. Even if your interest or experience with Asterisk is lower level, this book will provide a deeper understanding of how Asterisk operates in the real world.
Asterisk is deployed across countless enterprises globally. Running on Linux, it has constantly demonstrated its resilience, stability, and scalability and is now the advanced communication solution of choice to many organizations and consultants.
With a foreword from Mark Spencer, the man behind Asterisk, this book presents the accumulated wisdom of three leading Asterisk Consultants and shows the reader how to get the most out of Asterisk in the commercial environment. Over the course of eleven chapters, this book introduces the reader to topics as diverse as Advanced Dial Plans, Network Considerations, and Call Routing, through to Localization, DAHDI, Speech Technology, and Working with a GUI. The book also covers the more nebulous aspects of being an Asterisk professional such as evaluating customer requirements and pitching for contracts.
This book represents the wisdom and thoughts of front line consultants. The knowledge they impart will prove informative, thought provoking and be of lasting interest to Asterisk professionals.
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Asterisk 1.4 - the Professional's Guide
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Table of Contents (20 chapters)
Asterisk 1.4
Credits
Foreword
About the Authors
About the Reviewers
Preface
Free Chapter
The Dialplan
Network Considerations when Implementing Asterisk
Call Routing with Asterisk
Call Centers—Queues and Recording
Asterisk and Speech Technology
Call Accounting and Billing
Resilience and Stability
Localization and Practical Security
Interfacing with Traditional Analog and Digital Telephony
Integrating Asterisk with Wireless Technologies
Graphical User Interfaces
Selling Your Solution
Sample Email Content
Sample Appointment Sheet
Customer Reviews