Download E-books Practical Asterisk 1.4 and 1.6: From Beginner to Expert PDF

By Stefan Wintermeyer, Stephen Bosch

Utilizing the open resource Asterisk platform, you could install a cutting-edge VoIP PBX on a inexpensive workstation or server for a fragment of the price of traditional PBX structures. the single main issue to Asterisk is its notoriously bad documentation. sensible Asterisk 1.4 and 1.6 is the answer to that challenge. This booklet offers the entire precise, real-world, ground-level details you must plan, set up, configure, and reliably function Asterisk in any atmosphere.

This instructional and reference systematically introduces each one of Asterisk’s key development blocks and indicates find out how to use them to enforce an entire spectrum of communications ideas, from conferencing to name queuing, voicemail and fax to IVR. top Asterisk specialists Stefan Wintermeyer and Stephen Bosch draw on their huge event, featuring distinct utilization examples and functional advice no longer on hand anyplace else.

insurance contains
* precise directions for configuring a uncomplicated Asterisk process
* A start-to-finish enterprise case instance demonstrating Asterisk layout for real-world deployment
* an intensive creation to dialplan purposes and features
* how you can use the recent Asterisk Extensions Language to construct concise, readable, and maintainable dialplans
* utilizing Asterisk’s different community and IP telephony protocols, audio formats, and twine transports
* Configuring Asterisk’s strong voicemail positive factors
* construction a worldly Interactive Voice reaction (IVR) method with Asterisk
* Defining and using name queues in name middle environments
* utilizing Asterisk’s integrated conferencing capabilities
* Controlling Asterisk from exterior purposes, scripts, or the process shell
* Interacting with exterior purposes during the Asterisk Gateway Interface
* developing extension tracking and tricks for SIP phones
* Upgrading present platforms to the newest models of Asterisk

Whether you’re a community specialist, telephony specialist, software program developer, or energy person, useful Asterisk 1.4 and 1.6 will give you the main thorough element and sensible Asterisk assistance to be had anyplace.

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2, person entries are deleted utilizing DBdel(). Delete the most important apple within the relatives fruit as follows: exten => 1234,1,DBdel(fruit/apple) DBdel() is deprecated in Asterisk 1. four; use the DB_DELETE() functionality as an alternative. this is often referred to as like so: exten => 1234,1,NoOp(${DB_DELETE(fruit/apple)}) See additionally Appendix B, “Dialplan Applications,” and Appendix C, “Dialplan capabilities. ” eleven. 1. three. 2 DBdeltree() if you would like to delete a complete key kin, use DBdeltree(). The fruit family members is deleted as follows: exten => 1234,1,DBdeltree(fruit) See Appendix B. eleven. 2 Database entry from the Command-Line Interface The approach administrator can entry the database from the CLI. Tip when you've got hassle remembering a command or the precise syntax, you will get support on the CLI with aid database: For the subsequent examples, do not forget that in case your relations, key, or worth comprise any clean areas, the whole identify has to be enclosed in double costs (“ ”); for instance, database placed attempt access "Hello world". eleven. 2. 1 Writing Values to the Database You write values to the database with database placed kinfolk key worth: eleven. 2. 2 studying Values from the Database learn values from the database with database get family members key: eleven. 2. three Deleting Values from the Database either database del relations key and database deltree family members delete values from the database. eleven. 2. three. 1 database del To delete in basic terms the most important apple from the fruit relations, use database del: eleven. 2. three. 2 database deltree you could delete a whole key relatives with database deltree: eleven. 2. four exhibiting Database Contents The instructions database express and database showkey exhibit database contents within the CLI: eleven. three Database entry from the approach Shell utilizing the command asterisk -rx 'command', you could execute any CLI command through a shell script. the subsequent instance indicates how a database is populated, learn, after which ultimately deleted via exterior instructions: very important do not forget that if the kinfolk, key, or price comprises any clean areas, you want to use double prices (“) round the string, as follows: big-island:~# asterisk -rx 'database positioned attempt access "Hello World"' eleven. four Database Backup The AstDB is kept in /var/lib/asterisk/astdb through default. you could replica that listing so long as Asterisk is stopped. you can even again up the database from the procedure shell in the course of operation with the subsequent command: asterisk -rx "database express" > /tmp/backup-asterisk-database. txt after all, restoring the database from this sort of backup is tougher. eleven. five program instance: name Forwarding anyone who wishes, while she’s now not in, to have calls to her neighborhood quantity handed directly to her cell phone wishes name forwarding. this is accomplished both in the course of the neighborhood SIP telephone or centrally via Asterisk. In perform, we favor that latter strategy since it frees us from dependency on finish units, that could be disconnected, fail, or be swapped with others. It additionally implies that the decision forwarding surroundings isn't misplaced within the occasion of an influence failure or process restart.

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