OLAFONE VOX is a mobile VoIP dialer application developed by Digitelecom for Android devices. It allows users to make VoIP calls using 3G/Edge/Wi-Fi Internet connectivity. This app is specifically designed to meet the needs of VoIP providers, delivering a reliable and user-friendly experience.

The app utilizes the SIP protocol for signaling and supports the G729 codec, ensuring high-quality voice calls. It can run behind NAT or private IP, making it compatible with various network configurations. The user interface is intuitive and easy to navigate, providing a seamless calling experience.

OLAFONE VOX offers several useful features, including auto sync of balance, real-time SIP status messages, and a call history log. It also integrates with the device's address book, allowing users to easily access contacts and automatically detect the "+" sign when picking a contact from the phonebook.

With its efficient implementation of a jitter buffer for smooth voice playback and the use of silent suppression and comfort noise generation to reduce bandwidth usage, OLAFONE VOX is an efficient dialer for making VoIP calls.