By Nir Simionovich

ISBN-10: 184719446X

ISBN-13: 9781847194466

Start with AGI improvement and use the dynamic good points of Asterisk AGI to construct your individual VoIP-based telephony procedure. This booklet is meant for builders wishing to make use of Asterisk, approach directors wishing to achieve larger regulate over their Asterisk set up, and telephony provider prone wishing to installation Asterisk-based options to their infrastructure. you're anticipated to have a few event with Asterisk and a uncomplicated realizing of programming. No wisdom of Asterisk programming is needed.

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Additional resources for Asterisk Gateway Interface 1.4 and 1.6 Programming

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A given context may include several other contexts. This methodology is generally used to enable a form of modularization within the dialplan. In most cases, we will create contexts that match specific extension numbers and include these into another context. In this manner, we make the specific extension number logic available within the new context. Including one context within another context is performed by using the following directive: include => context_name This syntax can also be extended to include various time switches, allowing different contexts to be included at specific times: include => daytime|9:00-17:00|mon-fri|*|* include => nighttime|17:00-9:00|mon-fri|*|* include => weekend|*|sat-sun|*|* In this example, the daytime context is included from 9am untill 5pm, Monday to Friday, on each day of the month, in every month.

Please note that, at this point your installation lacks sample configuration files and init scripts; so trying to run Asterisk at this point will fail. Issue the make samples command in order to create sample configuration files. [ 27 ] Installing a 'Vanilla' Asterisk Once you have completed the sample configuration phase, issue the following command: asterisk –vvvvcgp. If a screen similar to the one shown next appears on your console at this point, you have a running Asterisk installation. Issue the core show version command at your Asterisk Command Line interface to show your installed Asterisk version.

If 'skip' is specified, the application will return immediately should the channel not be off hook. Otherwise, unless 'noanswer' is specified, the channel will be answered before the sound is played. Not all channels support playing messages while still on hook. If 'j' is specified, the application will jump to priority n+101 if present when a file specified to be played does not exist. This application sets the following channel variable upon completion: PLAYBACKSTATUS The status of the playback attempt as a text string, one of SUCCESS | FAILED Application: Background -= Info about application 'BackGround' =[Synopsis] Play an audio file while waiting for digits of an extension to go to.

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Asterisk Gateway Interface 1.4 and 1.6 Programming by Nir Simionovich

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