Wazo is mainly an IPBX that provides communication services such audio, video, and instant messaging based on the use of standard network technologies such as the TCP/IP protocol. It is interoperable with most market telephony systems and gives users access to flexible and advanced services without requiring specialized hardware.
tags: communications extensible ip-pbx pbx phoneFreeSWITCH is a scalable open source cross-platform telephony platform designed to route and interconnect popular communication protocols using audio, video, text or any other form of media. It was created in 2006 to fill the void left by proprietary commercial solutions. FreeSWITCH also provides a stable telephony platform on which many telephony applications can be developed using a wide range of free tools.
tags: voice-chat pbx zrtpXiVO is a scalable platform based on Asterisk that offers a free and complete PBX solution. It is licensed under the GPLv3.
tags: voice-chat pbx phone-system telecommunication asterisk-basedIncredible PBX is a secure and feature-rich implementation of the Asterisk® PBX. By rethinking the PBX security model from the ground up.
tags: voice-chat pbx telephony asteriskYate is a softswitch (concept of separating the network hardware from network software).
tags: voice-chat sip telephony pbx asteriskPBX in a Flash is a PBX system based on Asterisk, FreePBX and CentOS, coming as an ISO download. A two stage installation process allows for more flexibility for the installation of the PBX specific components. The Asterisk components are compiled from source during the install process which allows for easier adaptions later on. The system is update-able without re-install. A script collection on pbxinaflash.org allows for easy extension of the base system.
tags: voice-chat pbx asteriskFreeSentral is a full IP PBX consisting of a Linux Distribution, an IP PBX and a Web Graphical User Interface for easy configuration
tags: voice-chat sip pbx h323 ss7