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Telephone (application)
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<p>Telephone is a <a href="/facts/Softphone/4t3SvwDK">softphone</a> for <a href="/facts/MacOS/Y93vVpTm">macOS</a> developed by <i>64 Characters</i>. It uses <a href="/facts/Session_Initiation_Protocol/cbjUoNqP">Session Initiation Protocol</a> for communication. Telephone is distributed as <a href="/facts/Free_software/IaoVtJXn">free software</a> under the <a href="/facts/GNU_General_Public_License/S75KhLSX">GPL-3.0-or-later</a> license. </p>