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.

Developer(s)GNU Project
Stable release
1.9.15 / 13 December 2015; 8 years ago (2015-12-13)
PlatformLinux, Mac OS X, BSD, Windows
Available inC++
LicenseGPL (free software)
Websitewww.gnu.org/software/sipwitch

Availability

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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

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

Features

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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

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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

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Sources

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  1. ^ a b c 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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