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FreePBX is a web-based open-source graphical user interface (GUI) that manages Asterisk, a voice over IP (VoIP) and telephony server. [2]FreePBX is licensed under the GNU General Public License version 3, [3] with commercial modules available under their own licenses.
ShoreTel IP phone systems with unified communications and contact center built in; Snom One free/blue/yellow (Snom acquired and renamed pbxnsip) (SIP) Speedflow Communications VoIP class 4/5 softswitches with integrated billing, transcoding, SIP-H.323 converter.
In 1998, the firm entered the circuit-switched desktop phone business with a line of SoundPoint phones. In the third quarter of 2001, it entered the IP desktop phone business with the SoundPoint IP product line, starting with the SoundPoint IP500. Polycom VoIP phones use the open standard SIP to work with different call control platforms.
FreeSWITCH is a free and open-source telephony software for real-time communication protocols using audio, video, text and other forms of media. The software has applications in WebRTC, voice over Internet Protocol (VoIP), video transcoding, Multipoint Control Unit (MCU) functionality and supports Session Initiation Protocol (SIP) features.
The FreePBX Distro supports a large number of phone models via open-source modules. [ 6 ] [ 7 ] Supported VoIP phone manufacturers include Aastra Technologies , Algo, AND, Audiocodes, Cisco Systems , Cyberdata, Digium , Grandstream, Mitel , Nortel / Avaya , Panasonic , Polycom , Sangoma , Snom , Xorcom and Yealink [ zh ] .
A VoIP phone or IP phone uses voice over IP technologies for placing and transmitting telephone calls over an IP network, such as the Internet. [1] This is in contrast to a standard phone which uses the traditional public switched telephone network (PSTN).
Bicom Systems began researching and creating telecoms management software in 2003. [4] An Asterisk pioneer, [5] Bicom Systems launched the first ever open standards turnkey telephony system in 2004. Bicom Systems has seven products [6] including a desktop and mobile softphone, [7] an IP PBX telephony platform, [8] and an IP Key Systems product. [9]
FreeSWITCH communication open source software can do transcoding, conferencing and bridging of Siren 7/G.722.1 and Siren 14/G.722.1C audio formats. [ 16 ] [ 17 ] [ 18 ] aMSN , an open source Windows Live Messenger clone uses for Siren audio compression and decompression the "libsiren" library, an open source implementation of the codec, written ...
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