OpenPBX.org Completed Work

Completed work items

The following is an overview of work completed since CallWeaver was forked from Asterisk 1.2. However, the list is still incomplete.

Development and build environment

Renamed identifiers from ast_* to opbx_*
Automatic build configuration using GNU Autotools

Runtime environment

Run as user/group openpbx instead of root, configurable
Tested and optimised to run under Xen, VMware and VPS

Core

Converted core into library “corelib”
Added universal jitterbuffer
Added common software timer API
Added support for kernel based POSIX high resolution timers
Added generic software timers for platforms without POSIX timers
Replaced all zaptel timer dependencies with software timers (POSIX and generic)
Converted dialplan execution engine to use hashing instead of strcmp() and strcasecmp()
Replaced extension matching engine with cleaner, faster, more efficient engine
Renamed AGI to OGI to avoid any potential trademark issues

Use of embedded llibraries

Removed Berkeley DB1, replaced with multi-threading version of SQLite3
Made use of external versus embedded Editline configurable at build time

Use of external libraries

Removed internal codecs with corresponding codecs in SpanDSP library
Removed internal tone generator with generator in SpanDSP library
Integrated T.38 fax over IP services provided by SpanDSP library
Maintained intefaces to latest version of Zaptel and Libpri

Channel drivers

Added STUN support for SIP NAT traversal to chan_sip
Added CSRC entry handling in RTP for better compliance
Ported and fixed chan_bluetooth for use of bluetooth headsets as client devices

Loadable application modules

Replaced app_meetme with app_conference for conferencing

Utilities

Provided perl-ogi as an example how to treat the renaming of AGI or OGI
Provided dialplan checking and conversion script to adjust for case sensitive vars and apps

Bugfixes

Numerous bugs have been identified and fixed, in particular bugs in chan_sip and bugs related to locking issues. Often people bring bugs to us which Digium did not acknowledge as bugs (in Asterisk from where we inherited them), we fix them anyway!

More info

OpenPBX.org wiki on VoIP-Info.org | CallWeaver home page

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