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Историческую версию Voxbi можно получить на Android
Voxbi - приложение для мобильного VoIP-звонка
Voxbi is a Mobile VoIP dialer application that allows to make VoIP calls from any of the Android devices and it uses 3G/Edge/Wi-Fi Internet connectivity.It is developed based on the requirements of VoIP Providers business needs
Features :-
Voxbi uses SIP protocol based for signalling.
Supports G729 codec.
Runs Behind NAT or private IP.
User Friendly Interface.