Asterisk The Future of Telephony by Jim Van Meggelen, Jared Smith, Leif Madsen

By Jim Van Meggelen, Jared Smith, Leif Madsen

It can be it slow earlier than net telephony with VoIP (Voice over net Protocol) reaches serious mass, yet there is already super circulate in that course. loads of businesses usually are not basically interested in VoIP's promise of expense mark downs, yet its skill to maneuver facts, pictures, and voice site visitors over an analogous connection. examine it: a unmarried net cell name can take info sharing to an entire new point. that is why many IT directors and builders are actively seeking to organize VoIP-based inner most cell switching structures in the company. The potency that community clients can achieve with it truly is nearly mind-boggling. and inexpensive, if the procedure is equipped with open resource software program like Asterisk. There are advertisement VoIP techniques in the market, yet many are pricey structures working previous, complex code on out of date undefined. Asterisk runs on Linux and will interoperate with just about all standards-based telephony apparatus. and you'll application it on your liking. Asterisk's flexibility comes at a cost, even though: it isn't an easy procedure to profit, and the documentation is missing. Asterisk: the way forward for Telephony solves that challenge by way of delivering an entire roadmap for fitting, configuring, and integrating Asterisk with current mobile platforms. Our consultant walks you thru a uncomplicated dial plan step-by-step, and offers you adequate operating wisdom to establish an easy yet entire method. What you find yourself with is basically as much as you. Asterisk embraces the idea that of standards-compliance, but additionally delivers freedom to decide on how one can enforce your method. Asterisk: the way forward for Telephony outlines all of the strategies, and exhibits you the way to establish voicemail companies, name conferencing, interactive voice reaction, name ready, caller identity, and extra. you are going to additionally learn the way Asterisk merges voice and knowledge site visitors seamlessly throughout disparate networks. and also you will not desire extra undefined. For interconnection with electronic and analog mobilephone apparatus, Asterisk helps a few units. prepared for the way forward for telephony? we are going to assist you hook it up.

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13. 14. 15. zap Colophon About the Authors Colophon Index Asterisk™: The Future of Telephony by Jim Van Meggelen, Jared Smith, and Leif Madsen Copyright © 2005 O'Reilly Media, Inc. All rights reserved. Printed in the United States of America. , 1005 Gravenstein Highway North, Sebastopol, CA 95472. O'Reilly books may be purchased for educational, business, or sales promotional use. com). com. Editor: Mike Loukides Production Editor: Colleen Gorman Cover Designer: Ellie Volckhausen Interior Designer: David Futato Printing History: September 2005: First Edition.

6. Conclusion Chapter 10. 1. 2. 3. 4. 5. 6. 7. Conclusion Chapter 11. 1. 2. 3. 4. The Future of Asterisk Appendix A. 1. 2. SIP Appendix B. Application Reference AbsoluteTimeout( ) AddQueueMember( ) ADSIProg( ) AgentCallbackLogin( ) AgentLogin( ) AgentMonitorOutgoing( ) AGI( ) AlarmReceiver( ) Answer( ) AppendCDRUserField( ) Authenticate( ) Background( ) BackgroundDetect( ) Busy( ) CallingPres( ) ChangeMonitor( ) ChanIsAvail( ) CheckGroup( ) Congestion( ) ControlPlayback( ) Curl( ) Cut( ) DateTime( ) DBdel( ) DBdeltree( ) DBget( ) DBput( ) DeadAGI( ) Dial( ) DigitTimeout( ) Directory( ) DISA( ) DumpChan( ) DUNDiLookup( ) EAGI( ) Echo( ) EndWhile( ) ENUMLookup( ) Eval( ) Exec( ) ExecIf( ) FastAGI( ) Festival( ) Flash( ) ForkCDR( ) GetCPEID( ) GetGroupCount( ) GetGroupMatchCount( ) Goto( ) GotoIf( ) GotoIfTime( ) Hangup( ) HasNewVoicemail( ) HasVoicemail( ) IAX2Provision( ) ImportVar( ) LookupBlacklist( ) LookupCIDName( ) Macro( ) MailboxExists( ) Math( ) MeetMe( ) MeetMeAdmin( ) MeetMeCount( ) Milliwatt( ) Monitor( ) MP3Player( ) MusicOnHold( ) NBScat( ) NoCDR( ) NoOp( ) Park( ) ParkAndAnnounce( ) ParkedCall( ) PauseQueueMember( ) Playback( ) Playtones( ) Prefix( ) PrivacyManager( ) Progress( ) Queue( ) Random( ) Read( ) RealTime RealTimeUpdate( ) Record( ) RemoveQueueMember( ) ResetCDR( ) ResponseTimeout( ) RetryDial( ) Ringing( ) SayAlpha( ) SayDigits( ) SayNumber( ) SayPhonetic( ) SayUnixTime( ) SendDTMF( ) SendImage( ) SendText( ) SendURL( ) Set( ) SetAccount( ) SetAMAFlags( ) SetCallerID( ) SetCallerPres( ) SetCDRUserField( ) SetCIDName( ) SetCIDNum( ) SetGlobalVar( ) SetGroup( ) SetLanguage( ) SetMusicOnHold( ) SetRDNIS( ) SetVar( ) SIPAddHeader( ) SIPDtmfMode( ) SIPGetHeader( ) SoftHangup( ) StopMonitor( ) StopPlaytones( ) StripLSD( ) StripMSD( ) SubString( ) Suffix( ) System( ) Transfer( ) TrySystem( ) TXTCIDName( ) UnpauseQueueMember( ) UserEvent( ) Verbose( ) VMAuthenticate( ) VoiceMail( ) VoiceMailMain( ) Wait( ) WaitExten( ) WaitForRing( ) WaitForSilence( ) WaitMusicOnHold( ) While( ) Zapateller( ) ZapBarge( ) ZapRAS( ) ZapScan( ) Appendix C.

On the long drive home we talked about innovation in telephony, and he mentioned a little open-source telephony project he had heard of called Asterisk. Over the next few months, I was able to talk the company into buying a developers kit from Digium and start playing with Asterisk on company time. Over the next few months, I became more and more involved with the Asterisk community. I read the mailing lists. I scoured the archives. I hung out in the IRC channel, just hoping to find nuggets of Asterisk knowledge.

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