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Twinkle is a free and open source software application for Voice over Internet Protocol (VoIP) voice communications in IP networks, such as the Internet. It is designed for [1 ] 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 (RTP) which may be encrypted with the Secure Real-time Transport Protocol (SRTP) and the ZRTP security protocols.
Since version 1.3.2 (September 2008), Twinkle supports message exchange and a
buddy-list feature for presence notification, showing the online-status of predefined communications partners (provider-support needed).
Supported audio formats [ edit ]
G.711 A-law: 64 kbit/s payload, 8 kHz sampling rate G.711 μ-law: 64 kbit/s payload, 8 kHz sampling rate
G.726: 16, 24, 32 or 40 kbit/s payload, 8 kHz sampling rate
GSM: 13 kbit/s payload, 8 kHz sampling rate
iLBC: 13.3 or 15.2 kbit/s payload, 8 kHz sampling rate
Speex narrow band: 15.2 kbit/s payload, 8 kHz sampling rate Speex wide band: 28 kbit/s payload, 16 kHz sampling rate
Speex ultra wide band: 36 kbit/s payload, 32 kHz sampling rate
See also [ edit ]
References [ edit ]
External links [ edit ]