Developer(s)GNU Project
Stable release
1.9.15 / 13 December 2015 (2015-12-13)
PlatformLinux, Mac OS X, BSD, Windows
Available inC++
LicenseGPL (free software)
Websitewww.gnu.org/software/sipwitch

GNU SIP Witch is free SIP server software with peer-to-peer capabilities from the GNU Project. It is the GNU implementation of the Session Initiation Protocol (SIP), which is used for the routing of calls.

Availability

SIP Witch is released as free software under the terms of version 3 or later of the GNU General Public License (GPL). It is designed for Linux, macOS, BSD and Windows and planned support for Android.[1] In the popular Linux distributions Ubuntu and Fedora it may be installed directly from the standard package sources.[2][3]

Technology

SIP Witch is written in the programming language C++ and uses the uCommon,[4] eXosip[5] and GNU oSIP[6] libraries.

Features

The software enables Voice over IP as part of a self-organising Peer-to-peer telephone network.[1] It supports features like call forwarding, call distribution, call hold, presence information and (text) messages, supports encrypted calls and also enables NAT traversal to establish the peer-to-peer connections.[7]

History

The SIP Witch is being developed since the 10th of August 2007 by David Sugar within the GNU Telephony project. The first version was 0.1.0. Version 1 was released on May 14, 2011. It is being used as a component of GNU Free Call, which is supposed to be an alternative to Skype.[1]

See also

Sources

  1. 1 2 3 Dj Walker-Morgan (2011-05-17). "Peer-to-peer VOIP app GNU SIP Witch reaches version 1.0". Heise Media UK Ltd. Archived from the original on 15 May 2012. Retrieved 2012-06-10.
  2. ↑ "Ubuntu – Package Search Results -- sipwitch".
  3. ↑ "Fedora Package Database -- sipwitch". Archived from the original on 2013-07-20. Retrieved 2011-05-19.
  4. ↑ "GNU uCommon C++ - GNU Telephony". Archived from the original on 2011-10-07. Retrieved 2011-05-19.
  5. ↑ "The eXtended osip library - Summary [Savannah]".
  6. ↑ "The GNU oSIP library - GNU Project - Free Software Foundation (FSF)".
  7. ↑ Hans-Joachim Baader (2011-05-16). "GNU SIP Witch erreicht Version 1.0". Pro-Linux. Baader&Lindner GbR. Retrieved 2011-05-19.
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