Practical Asterisk 1.4 and 1.6: From Beginner to Expert

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Pearson Education, Dec 20, 2009 - Computers - 840 pages
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Using the open source Asterisk platform, you can deploy a state-of-the-art VoIP PBX on a low-cost PC or server for a fraction of the cost of conventional PBX systems. The only drawback to Asterisk is its notoriously poor documentation. Practical Asterisk 1.4 and 1.6 is the solution to that problem. This book provides all the detailed, real-world, ground-level information you need to plan, install, configure, and reliably operate Asterisk in any environment.


This tutorial and reference systematically introduces each of Asterisk’s key building blocks and shows how to use them to implement a full spectrum of communications solutions, from conferencing to call queuing, voicemail and fax to IVR. Leading Asterisk consultants Stefan Wintermeyer and Stephen Bosch draw on their extensive experience, presenting detailed usage examples and practical tips not available anywhere else.


Coverage includes

  • Detailed instructions for configuring a basic Asterisk system
  • A start-to-finish business case example demonstrating Asterisk design for real-world deployment
  • A thorough introduction to dialplan applications and functions
  • How to use the new Asterisk Extensions Language to build concise, readable, and maintainable dialplans
  • Using Asterisk’s diverse network and IP telephony protocols, audio codecs, and wire transports
  • Configuring Asterisk’s powerful voicemail features
  • Building a sophisticated Interactive Voice Response (IVR) system with Asterisk
  • Defining and utilizing call queues in call center environments
  • Using Asterisk’s built-in conferencing functions
  • Controlling Asterisk from external applications, scripts, or the system shell
  • Interacting with external applications through the Asterisk Gateway Interface
  • Setting up extension monitoring and hints for SIP telephones
  • Upgrading existing systems to the latest versions of Asterisk

Whether you’re a network professional, telephony expert, software developer, or power user, Practical Asterisk 1.4 and 1.6 will provide you with the most thorough detail and practical Asterisk guidance available anywhere.


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1 How to Get the Most Out of This Book
2 Installation and Hello World
3 Dialplan Fundamentals
A Typical Business Telephone System
5 Dialplan Programming
6 Asterisk Extension Language
7 Protocols
8 Making Connections
B177 System
B178 Transfer
B179 TryExec
B180 TrySystem
B183 UnpauseQueueMember

9 Voicemail
10 Interactive Voice Response
11 The Asterisk Database
12 Queues
13 Features
14 Conferencing
15 External Control of Asterisk
16 Asterisk Gateway Interface
17 Fax Server
18 Busy Lamp Field Hints Pickup
A Installation Instructions for Asterisk 14
B Dialplan Applications
B159 SetGroup
B164 SetVar
B165 SIPAddHeader
B166 SIPdtmfMode
B167 SIPGetHeader
B168 SMS
B169 SoftHangup
B170 Sort
B172 StartMusicOnHold
B173 StopMixMonitor
B174 StopMonitor
B175 StopMusicOnHold
B176 StopPlaytones
B184 UserEvent
B185 Verbose
B186 VMAuthenticate
B187 VoiceMail
B188 VoiceMailMain
B189 Wait
B190 WaitExten
B191 WaitForNoise
B193 WaitForSilence
B194 WaitMusicOnHold
B195 WaitUntil
B196 While
B197 Zapateller
B198 ZapBarge
B199 ZapRAS
B200 ZapScan
B201 ZapSendKeypadFacility
C Dialplan Functions
D AGI Command Summary
E AMI Command Summary
F Configuration Templates
G Upgrading from 14 to 16
H From Zaptel to DAHDI
J GNU Free Documentation License

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About the author (2009)

Stefan Wintermeyer is founder and director of AMOOMA GmbH, a leading provider of Asterisk telephony solutions in Europe. He was Germany’s first Digium-Certified Asterisk Professional and continues to share his knowledge through conferences, seminars, and workshops. Stephen Bosch is an Asterisk consultant and writer who divides his time between Calgary, Canada, and Aschaffenburg, Germany.

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