GNU SIP Witch

GNU SIP Witch is an open source, free, cross-platform and secure SIP (Session Initiation Protocol) based office telephone call server that supports Linux, BSD, Solaris, Microsoft Windows and Mac OS X operating systems. It is part of the GNU Telephony project.

Easily implement a peer-to-peer VoIP server

This is a command-line software designed from the ground up to implement a Peer-to-Peer (P2P) VoIP (Voice over Internet Protocol) server that supports features like call distribution, call forwarding, call coverage, call transfer, call holding, hunt groups and, ring groups.

In addition, the program allows users to make peer-to-peer calls behind NAT (Network Address Translation) firewalls, use secure telephone extensions, as well as to use intercept-free peer-to-peer video and audio extensions.

Command-line options

Various command-line options are available to users, allowing them to specify the address of a SIP interface, to specify modules to load, to disable local user accounts, to set priority level, to enable the public access mode, to set the service to restartable process, to enable the system service mode, to trace sip messages, to force the program to run in background, to process concurrency, to enable desktop access, as well as to use specified group permissions.

Getting started with GNU SIP Witch

To install and use the GNU SIP Witch software on your GNU/Linux computer, you have to options. The first one involves opening the default package manager application of your distribution, searching for the project and installing it.

On the other hand, the second method involves downloading the source archive of the project from Softoware or via its official website (see link at the end of the article), configuring and compiling GNU SIP Witch.

Please note that the ucommon and libexosip2 packages are required for the second method. To install from sources, download and save the archive on a location of your choice, unpack it, open a Terminal app and navigate to the location of the extracted archive files (e.g. cd /home/softoware/sipwitch-1.9.3).

Then, run the ‘./configure && make’ command to configure, optimize (optionally) and compile the program for your hardware architecture and operating system. After a successful compilation, you’ll be able to install it system wide by running the ‘make install’ command as root or the ‘sudo make install’ command as a privileged user.

What is new in this release:

• Fixed systemd multi-arch pathing issue
• systemd unit file fixes from Michael Scherer

What is new in version 1.4.0:

• Updated for the new ucommon 6 API.
• Support for VoIP hotspot mode.
• Initial support for the exosip 4.0 API.
• Better mingw build support.
• Better debuging tools.
• A switchview GUI.

What is new in version 0.10.2:

• cmake build was introduced.
• A new desktop permissions mode was added for integration between sipwitch service running as a privileged daemon and the user desktop.
• The utilities were reorganized and simplified.

What is new in version 0.9.2:

• Issues related to TLS SIP support, publishing of contact information in registration replies and clean shutdown on server failure have been fixed.

What is new in version 0.9.1:

• Refactoring of the API to take advantage of command parsing, internationalization, and other features offered in the newest ucommon releases.

What is new in version 0.8.4:

• Minor bugfixes and feature enhancements.

What is new in version 0.5.3:

• SIP re-invite processing mid call now works correctly, along with call holding state.
• Forward publishing of SIP presence is now supported when using sipwitch as a front-end for an insecure IP-PBX.

What is new in version 0.5.1:

• SIP presence support was introduced.
• SIP instant messaging now operates multi-nodal.
• Other improvements made in sipwitch multi-nodal operations to better support meshed calling networks.

What is new in version 0.5.0:

• SIP Witch internode calling has been introduced.
• SIP Witch can now automatically change state from a SIP call server to a SIP redirection server as needed to complete requests to remote URIs or redirect calls to alternate nodes if a given user agent is not present on the current server, with pre-generated authentication credentials.
• Secure domain calling to insecure domains now also uses internodal calling.

Requirements:

• UCommon