oppovoiz 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.
The main features of this applications are-
Making VoIP calls to supported gsm number and to other sip clients.
Receiving a call from another sip clients.
Sending SMS to gsm numbers of supported countries and to other sip clients.
Top-up to gsm numbers in supported countries.