Twinkle
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Twinkle
Twinkle is a free software open source software application for Voice over Internet Protocol (VoIP) voice communications in IP networks, such as the Internet.It is designed for GNU/Linux operating systems and uses the Qt toolkit for its graphical user interface. For call signaling it employs the Session Initiation Protocol (SIP). It also features direct IP to IP calls. Media streams are transmitted via the Real-time Transport Protocol which may be encrypted with the Secure Real-time Transport Protocol (SRTP) and the ZRTP security protocols.
Installation