Call4UVOX is a mobile dialer application for Android devices that allows users to make VoIP calls using 3G/Edge/Wi-Fi internet connectivity. Developed by Digitelecom, this app is designed to meet the requirements of VoIP providers and offers a range of features to enhance the calling experience.

Using the SIP protocol for signaling, Call4UVOX supports G729, PCMU, and PCMA codecs, ensuring high-quality audio during calls. It can run behind NAT or private IP, making it compatible with various network configurations. The app boasts a user-friendly interface, making it easy for users to navigate and make calls.

One of the standout features of Call4UVOX is its efficient implementation of a jitter buffer, which ensures smooth voice playback. Additionally, silent suppression and comfort noise generation are used to reduce bandwidth usage, making the dialer more efficient for making VoIP calls.

Call4UVOX seamlessly integrates with the mobile phonebook, automatically detecting the "+" sign when a contact is picked. This allows for easy dialing without the need to manually enter international codes.

With its comprehensive feature set and user-friendly interface, Call4UVOX is a reliable and efficient mobile dialer for VoIP calls on Android devices.