Twinkle (software)
App for voice communications over VoIP protocol
From Wikipedia, the free encyclopedia
Twinkle is a free and open-source application for voice communications over Voice over IP (VoIP) protocol.
| Twinkle | |
|---|---|
 | |
 | |
| Developers | Michel de Boer, Luboš Doležel |
| Initial release | 27 April 2005 |
| Stable release | |
| Written in | C++ |
| Operating system | Linux |
| Platform | Qt |
| Type | VoIP |
| License | GPL-2.0-or-later |
| Website | twinkle |
| Repository | |
Architecture
It is designed for Linux operating systems and uses the Qt toolkit for its graphical user interface. For call signaling it employs the Session Initiation Protocol (SIP).[2] 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
- 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
- G.729: 8 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
