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Leif Madsen - Asterisk Cookbook

Here you can read online Leif Madsen - Asterisk Cookbook full text of the book (entire story) in english for free. Download pdf and epub, get meaning, cover and reviews about this ebook. year: 2011, publisher: OReilly Media, genre: Computer. Description of the work, (preface) as well as reviews are available. Best literature library LitArk.com created for fans of good reading and offers a wide selection of genres:

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Asterisk has a wealth of features to help you customize your PBX to fill very specific business needs. This short cookbook offers recipes for tackling dialplan fundamentals, making and controlling calls, and monitoring channels in your PBX environment. Each recipe includes a simple code solution you can put to work immediately, along with a detailed discussion that offers insight into why and how the recipe works. This book focuses on Asterisk 1.8, although many of the conventions and information presented are version-agnostic. These recipes include solutions to help you:Authenticate callers before moving on in your dialplan Redirect calls received by your auto-attendant Create an automatic call-back service Initiate hot-desking to login to and accept calls at any office device Monitor and interrupt live calls to train new employees at a call center Record calls from your Asterisk dialplan

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Asterisk Cookbook
Leif Madsen
Russell Bryant
Editor
Mike Loukides

Copyright 2011 Leif Madsen and Russell Bryant

OReilly books may be purchased for educational, business, or sales promotional use. Online editions are also available for most titles (.

Nutshell Handbook, the Nutshell Handbook logo, and the OReilly logo are registered trademarks of OReilly Media, Inc. Asterisk Cookbook , the image of a Radiata Rosy Feather Star, and related trade dress are trademarks of OReilly Media, Inc.

Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in this book, and OReilly Media, Inc. was aware of a trademark claim, the designations have been printed in caps or initial caps.

While every precaution has been taken in the preparation of this book, the publisher and authors assume no responsibility for errors or omissions, or for damages resulting from the use of the information contained herein.

OReilly Media Preface This is a book for anyone who uses Asterisk but - photo 1

O'Reilly Media

Preface

This is a book for anyone who uses Asterisk, but particularly those who already understand the dialplan syntax.

In this book, we look at common problems weve encountered as Asterisk administrators and implementers, then show solutions to those problems using the Asterisk dialplan. As you go through the recipes and start looking at the solutions, you may think, Oh, thats a neat idea, but they could have also done it this way. That might happen a lot, because with Asterisk, the number of solutions available for a particular problem are astounding. We have chosen to focus on using the tools available to us within Asterisk, so solutions heavily focus on the use of dialplan, but that doesnt mean an external application through the Asterisk Gateway Interface or Asterisk Manager Interface isnt also possible.

Readers of this book should be familiar with many core concepts of Asterisk, which is why we recommend that you already be familiar with the content of Asterisk: The Definitive Guide , also published by OReilly . This book is designed to be a complement to it.

We hope you find some interesting solutions in this book that help you to be creative in future problem solving.

Organization

The book is organized into these chapters:

This chapter shows some examples of fundamental dialplan constructs that will be useful over and over again.

This chapter discusses a number of examples of controlling phone calls in Asterisk.

This chapter has examples of ways to get involved with the audio of a phone call.

Software

This book is focused on documenting Asterisk Version 1.8; however, many of the conventions and information in this book are version-agnostic.

Conventions Used in This Book

The following typographical conventions are used in this book:

Italic

Indicates new terms, URLs, email addresses, filenames, file extensions, pathnames, directories, and Unix utilities.

Constant width

Indicates commands, options, parameters, and arguments that must be substituted into commands.

Constant width bold

Shows commands or other text that should be typed literally by the user. Also used for emphasis in code.

Constant width italic

Shows text that should be replaced with user-supplied values.

[ Keywords and other stuff ]

Indicates optional keywords and arguments.

{ choice-1 | choice-2 }

Signifies either choice-1 or choice-2 .

Tip

This icon signifies a tip, suggestion, or general note.

Warning

This icon indicates a warning or caution.

Using Code Examples

This book is here to help you get your job done. In general, you may use the code in this book in your programs and documentation. You do not need to contact us for permission unless youre reproducing a significant portion of the code. For example, writing a program that uses several chunks of code from this book does not require permission. Selling or distributing a CD-ROM of examples from OReilly books does require permission. Answering a question by citing this book and quoting example code does not require permission. Incorporating a significant amount of example code from this book into your products documentation does require permission.

We appreciate, but do not require, attribution. An attribution usually includes the title, author, publisher, and ISBN. For example: Asterisk Cookbook , First Edition, by Leif Madsen and Russell Bryant (OReilly). Copyright 2011 Leif Madsen and Russell Bryant, 978-1-449-30382-2.

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Acknowledgments

While writing this book, we used OReillys Open Feedback Publishing System (OFPS), which allowed Asterisk community members to read and comment on the content as we were writing it. The following people provided feedback to us via OFPS: Stefan Schmidt, Scott Howell, Christian Gutierrez, Jason not a nub Parker, and Paul Belanger. Thank you all for your valuable contributions to this book!

Chapter 1. Dialplan Fundamentals
Introduction

This chapter is designed to show you some fundamental dialplan usage concepts that we use in nearly every dialplan. Weve developed these recipes to show you how weve found the usage of these dialplan applications to be of the greatest value and flexibility .

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