Onyx Dialer description

ONYX Dialer is a mobile application, which allows users to make VoIP calls from mobile phones.For using this app, end users will need an Operator Code, which they can obtain from a VoIP Service Provider.

Features:
Integration with mobile phonebook
Balance information: You can check their account balance on the mobile phone screen or alternatively, they can hear account balance information through IVR (Interactive Voice Response)