Open Source VoIP: What is Linphone?Feb 14, 2014, 04:00 (1 Talkback[s])
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Linphone was the first open source software to use the session initiation protocol (SIP) with VoIP. The open software has voice, video and messaging features that can be used with any SIP VoIP operator. And because of its open source nature, it can be distributed for free.
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