Welcome to Opal !

This project is a community effort to develop and support the OPAL VoIP library. OPAL implements the commonly used protocols used to send voice, video and fax data over IP networks.

Originally part of the OpenH323 project, OpalVoip has grown to include SIP and IAX2. OPAL is released under the Mozilla Public License 1.0 Open Source license.

Opal runs on Linux, Windows, MacOSX, xBSD, Solaris, and Windows Mobile.

Latest News
Sirius Release Candidate PDF Print E-mail
Written by Robert Jongbloed   
Monday, 01 February 2010 13:54

Release candidate snapshot downloads of the Sirius release (PTLib v2.8.0 & OPAL v3.8.0) are now available. This is the last step on this becoming our standard stable release, superceding the Lalande release.

Main features are:

  • Support for SIMPLE and OMA variants for presence.
  • MSRP instant messaging fully implemented.
  • OPAL based “mixer” class for audio and video with sample MCU.
  • T.38 and G.711 fax support using SpanDSP as a DLL/Plug in. Fixed numerous compatibility issues from Lalande, which was pretty broken.
  • H.239 client side support.
  • Call recording can now include video to AVI file (Windows only at present)
  • G.722.2 (aka GSM-AMR wide band) codec plug in.
  • Can now handle large numbers of SIP registrations or subscriptions.
  • “Internal transfer” feature for switching a network connection (e.g. SIP) between subsystems, e.g. call starts in on an IVR and then moves to the MCU or the CP sound system.
  • New simplified C++ API based on the “C” API.
  • Ruby interface classes.
  • The usual innumerable tweaks and fixes.

Posted from my iPhone using J Admin Mobile!
Last Updated on Sunday, 07 February 2010 22:55
 
Lalande Final Release PDF Print E-mail
Written by Robert Jongbloed   
Monday, 01 February 2010 11:49
The final maintenance release snapshot downloads of the Lalande release (PTLib v2.6.6 & OPAL v3.6.7) are now available. All future snapshots will be on the new Sirius release.
 
Lalande Stable 5 Released PDF Print E-mail
Written by Robert Jongbloed   
Tuesday, 22 September 2009 11:16
Maintenance release snapshot downloads of the Lalande release (PTLib v2.6.5 & OPAL v3.6.6) are now available.
 
Lalande Stable 4 Released PDF Print E-mail
Written by Robert Jongbloed   
Sunday, 05 July 2009 16:59
Maintenance release snapshot downloads of the Lalande release (PTLib v2.6.4 & OPAL v3.6.4) are now available.
 
Lalande Stable 3 Released PDF Print E-mail
Written by Robert Jongbloed   
Friday, 05 June 2009 14:46
Maintenance release snapshot downloads of the Lalande release (PTLib v2.6.3 & OPAL v3.6.3) are now available.
 
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