Asterisk Architecture. Architecture APIs Defined for loadable modules Facilitates hardware and protocol abstraction The Asterisk core does not have to.

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Presentation transcript:

Asterisk Architecture

Architecture

APIs Defined for loadable modules Facilitates hardware and protocol abstraction The Asterisk core does not have to worry about details of how a caller is connecting, what codecs are in use, etc.

Channel API Handles the type of connection a caller is arriving on VoIP connection ISDN PRI… Dynamic modules loaded to handle the lower details of these connections

Application API Allows various task modules to be run to perform various functions Conferencing Paging Directory Listing Voic …

Codec Translator API Loads codec modules to support various audio encoding and decoding formats GSM µ-law/A-law G.729 MP3…

File Format API Handles the reading and writing of various file formats for the storage of data in the filesystem GSMsf.wav H.263…

Asterisk’s core (1) PBX Switching Connects calls together between various users and automated tasks Connects callers arriving on various hardware and software interfaces Application Launcher Launches applications which perform services

Asterisk’s core (2) Codec Translator Uses codec modules for the encoding and decoding of various audio compression formats Different codecs available to suit diverse needs Scheduler and I/O Manager Handles low-level task scheduling and system management for optimal performance under all load conditions

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