Practical Asterisk 1.4 and 1.6

Format:

Book

Author/Creator:

Wintermeyer, Stefan, Author.

Contributor:

Bosch, Stephen, Contributor.

Language:

English

Subjects (All):

Asterisk (Computer file).

Internet telephony--Private branch exchanges.

Internet telephony.

Telephone.

Physical Description:

1 online resource (xxxiii, 793 p.) : ill.

Edition:

1st edition

Place of Publication:

[Place of publication not identified] Addison Wesley 2010

Language Note:

English

System Details:

text file

Summary:

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.

Contents:

Cover

Contents

Foreword

Preface

Acknowledgments

About the Authors

Chapter 1 How to Get the Most Out of This Book

1.1 What Is Asterisk?

1.2 Who Should Read This Book?

1.2.1 The Beginner

1.2.2 The Journeyman

1.2.3 The Expert

1.3 Updates and Versions of the Book

1.4 Reader Contributions and Feedback

1.5 Additional Resources

Chapter 2 Installation and "Hello World

2.1 Installing Asterisk on the Server

2.2 Calling "Hello World" from the CLI

2.2.1 Configuring Asterisk

2.2.2 Starting Asterisk and Calling "Hello World

2.2.3 Stopping Asterisk

2.3 Calling "Hello World" with a SIP Phone

2.3.1 Configuring the SIP Phone and sip.conf

2.3.2 Starting Asterisk and the Phone

2.4 Building a Minimal Phone System with Two SIP Phones

2.4.1 Configuring Voicemail

2.5 Rights Administration with Contexts

2.5.1 The Originating Context

2.5.2 Call Destination: Contexts in extensions.conf

2.6 Calls to and from the Public Switched Telephone Network

2.6.1 Calling the PSTN

2.6.2 Taking Calls from the PSTN

Chapter 3 Dialplan Fundamentals

3.1 Contexts

3.2 Extensions

3.2.1 Fundamental Applications

3.2.2 Priorities

3.3 Pattern Matching

3.3.1 Pattern Elements

3.3.2 Testing a Pattern Using dialplan show

3.3.3 Pattern-Matching Order

3.4 Include Statements

3.4.1 Order of Execution When Using Include Statements

3.4.2 Time-Conditional Include Statements

3.5 The {EXTEN} Variable and the {CALLERID(num)} Function

3.5.1 {EXTEN}

3.5.2 {CALLERID(num)}

Chapter 4 Case Study: A Typical Business Telephone System

4.1 The Numbering Plan

4.2 Choosing the Infrastructure

4.2.1 Network

4.2.2 Server Hardware

4.3 Base Configuration

4.3.1 A sip.conf for 100 Users

4.3.2 The Dialplan

4.4 What Next?

Chapter 5 Dialplan Programming.

5.1 Programming "How-To

5.1.1 Program Structure

5.1.2 Using Set()

5.1.3 Labels and Goto()

5.1.4 While() Loops

5.1.5 GotoIf() Conditional

5.1.6 Gosub() Subroutines

5.2 Variables

5.2.1 Expanding Variables in an Extension

5.2.2 General Considerations

5.2.3 Defining Global Variables in extensions.conf

5.2.4 Defining Variables with Set()

5.2.5 Inheritance of Channel Variables

5.2.6 System Channel Variables

5.2.7 Manipulating Variables

5.3 Special Extensions

5.3.1 The h Extension

5.3.2 The i Extension

5.3.3 The o and a Extensions

5.3.4 The t and T Extensions

5.3.5 The s Extension

5.4 Macros

5.5 Deprecated Features

Chapter 6 Asterisk Extension Language

6.1 CLI Commands for AEL

6.2 aelparse

6.3 Comparing extensions.conf with extensions.ael

6.3.1 Line Termination

6.3.2 Contexts, Extensions, and Priorities

6.3.3 Comments

6.3.4 Includes

6.3.5 Global Variables

6.3.6 Expressions and Variable Assignment

6.3.7 Labels, goto, and jump

6.3.8 Conditionals

6.3.9 Loops

6.3.10 Macros

6.3.11 Hints

6.3.12 Filtering by Caller ID

6.4 Choosing between extensions.ael and extensions.conf

Chapter 7 Protocols

7.1 Network Protocols

7.1.1 Transmission Control Protocol

7.1.2 User Datagram Protocol

7.2 Channels

7.3 Peers, Users, and Friends

7.4 IAX Versus SIP

Chapter 8 Making Connections

8.1 Codecs

8.1.1 What Does a Codec Do?

8.1.2 Performance

8.1.3 Configuring Codecs

8.1.4 Commonly Used Codecs

8.1.5 Bandwidth and Trunking

8.2 Integrated Services Digital Network

8.2.1 ISDN Basics

8.2.2 Choosing an ISDN Card

8.2.3 Media Gateways

8.3 Analog Telephony

8.3.1 Connecting Analog Devices

8.3.2 Analog Telephone Adapter

Chapter 9 Voicemail

9.1 Example Implementations

9.1.1 An Example Home System.

9.1.2 An Example Business System

9.3 Dialplan Applications

9.3.1 VoiceMail

9.3.2 VoiceMailMain

9.4 voicemail.conf

9.4.1 [general]

9.4.2 [zonemessages]

9.4.3 Defined Contents

9.4.4 Mailboxes

9.5 Dial-by-Name

9.6 Saving Passwords in voicemail.conf

Chapter 10 Interactive Voice Response

10.1 A Simple IVR

10.1.1 Timeouts

10.1.2 Invalid Input (the i Extension)

10.1.3 Pauses

10.2 Multilevel IVR Systems

10.3 Text-to-Speech

10.3.1 Installing Cepstral TTS

Chapter 11 The Asterisk Database

11.1 The Asterisk Database

11.1.1 Writing Values to the Database

11.1.2 Reading Values from the Database

11.1.3 Deleting Values from the Database

11.2 Database Access from the Command-Line Interface

11.2.1 Writing Values to the Database

11.2.2 Reading Values from the Database

11.2.3 Deleting Values from the Database

11.2.4 Displaying Database Contents

11.3 Database Access from the System Shell

11.4 Database Backup

11.5 Application Example: Call Forwarding

11.5.1 Simple Call Forwarding

11.5.2 Complex Call Forwarding

11.6 Application Example: Calling Card

Chapter 12 Queues

12.1 Extension for Testing Hold Music

12.2 musiconhold.conf

12.3 queues.conf

12.3.1 Announcement Sound Files

12.4 agents.conf

12.5 Extensions

12.5.1 Sending Callers to the Queue

12.5.2 AgentLogin() and AgentCallbackLogin()

12.6 Log File

12.6.1 Importing the Queue Log into MySQL

Chapter 13 Features

13.1 Call Transfer

13.1.1 Blind Transfer

13.1.2 Attended Transfer

13.2 Call Parking

Chapter 14 Conferencing

14.1 Installation and the Timing Device

14.2 Defining Conference Rooms

14.3 Access from the Dialplan

14.4 Announcing the Number of Conference Participants

Chapter 15 External Control of Asterisk

15.1 asterisk -rx "command

15.2 Call Files.

15.2.1 Making a Call Automatically

15.2.2 Parameters

15.2.3 Hotel Wake-Up Call Example

15.3 The Asterisk Manager Interface

15.3.1 Creating an AMI User

15.3.2 Talking to the AMI

15.3.3 AMI Commands

15.3.4 Getting the Number of Voicemail Messages with Expect

15.3.5 StarAstAPI for PHP

15.3.6 Getting the Number of Mailbox Messages with PHP

15.4 The Asynchronous JavaScript Asterisk Manager

15.4.1 Getting the Number of Voicemail Messages with AJAM

15.4.2 AJAX and AJAM Considerations

Chapter 16 Asterisk Gateway Interface

16.1 Data Streams

16.1.1 STDIN

16.1.2 STDOUT

16.1.3 STDERR

16.2 Examples in Various Programming Languages

16.2.1 Perl

16.2.2 PHP

16.2.3 Ruby and Adhearsion

16.2.4 Other Programming Languages

Chapter 17 Fax Server

17.1 Installing IAXmodem

17.1.1 Configuring IAXmodem

17.1.2 Configuring faxgetty and Logging

17.2 Installing Hylafax

17.3 Receiving Faxes

17.4 Sending Faxes

17.5 Sending Received Faxes as E-Mail

Chapter 18 Busy Lamp Field, Hints, Pickup

18.1 Controlling Indicators

18.1.1 sip.conf

18.1.2 Hints

18.2 Subscriptions

18.3 Configuring Telephones for BLF

18.3.1 BLF on the Aastra 480i

18.3.2 Polycom Soundpoint IP 501

18.4 Testing the Hints

18.5 Configuring Pickup

18.5.1 extensions.conf for Pickup

18.5.2 Configuring the Phones for Pickup

18.5.3 Configuring Group Pickup

18.6 Advanced BLF Indicators in Asterisk 1.6

Appendix A: Installation Instructions for Asterisk 1.4

A.1 LibPRI

A.2 DAHDI

A.3 Asterisk

Appendix B: Dialplan Applications

B.1 AbsoluteTimeout()

B.2 AddQueueMember()

B.3 ADSIProg()

B.4 AgentCallbackLogin()

B.5 AgentLogin()

B.6 AgentMonitorOutgoing()

B.7 AGI()

B.8 AlarmReceiver()

B.9 AMD()

B.10 Answer()

B.11 AppendCDRUserField()

B.12 Authenticate().

B.13 Background()

B.14 BackgroundDetect()

B.15 Bridge()

B.16 Busy()

B.17 ChangeMonitor()

B.18 ChanIsAvail()

B.19 ChannelRedirect()

B.20 ChanSpy()

B.21 CheckGroup()

B.22 ClearHash()

B.23 Congestion()

B.24 ContinueWhile()

B.25 ControlPlayback()

B.26 Curl()

B.27 Cut()

B.28 DAHDIBarge()

B.29 DAHDIRAS()

B.30 DAHDIScan()

B.31 DAHDISendKeypadFacility()

B.32 DateTime()

B.33 DBdel()

B.34 DBdeltree()

B.35 DBget()

B.36 DBput()

B.37 DeadAGI()

B.38 Dial()

B.39 Dictate()

B.40 DigitTimeout()

B.41 Directory()

B.42 DISA()

B.43 DumpChan()

B.44 DUNDiLookup()

B.45 EAGI()

B.46 Echo()

B.47 EndWhile()

B.48 EnumLookup()

B.49 Eval()

B.50 Exec()

B.51 ExecIf()

B.52 ExecIfTime()

B.53 ExitWhile()

B.54 ExtenSpy()

B.55 ExternalIVR()

B.56 FastAGI()

B.57 Festival()

B.58 Flash()

B.59 FollowMe()

B.60 ForkCDR()

B.61 GetCPEID()

B.62 GetGroupCount()

B.63 GetGroupMatchCount()

B.64 Gosub()

B.65 GosubIf()

B.66 Goto()

B.67 GotoIf()

B.68 GotoIfTime()

B.69 Hangup()

B.70 HasNewVoicemail()

B.71 HasVoicemail()

B.72 IAX2Provision()

B.73 ICES()

B.74 ImportVar()

B.75 Incomplete()

B.76 JabberSend()

B.77 JabberStatus()

B.78 KeepAlive()

B.79 Log()

B.80 LookupBlacklist()

B.81 LookupCIDName()

B.82 Macro()

B.83 MacroExclusive()

B.84 MacroExit()

B.85 MacroIf()

B.86 mailboxExists()

B.87 Math()

B.88 MD5()

B.89 MD5Check()

B.90 MeetMe()

B.91 MeetMeAdmin()

B.92 MeetMeChannelAdmin()

B.93 MeetMeCount()

B.94 Milliwatt()

B.95 MinivmAccMess()

B.96 MinivmDelete()

B.97 MinivmGreet()

B.98 MinivmNotify()

B.99 MinivmRecord()

B.100 MixMonitor()

B.101 Monitor()

B.102 Morsecode()

B.103 MP3Player()

B.104 MSet()

B.105 MusicOnHold()

B.106 NBScat().

B.107 NoCDR().

Notes:

Bibliographic Level Mode of Issuance: Monograph

Description based on publisher supplied metadata and other sources.

ISBN:

9786612694059

9780321701565

0321701569

9781282694057

1282694057

9780321543745

0321543742

OCLC:

1027146091