With its simple and intuitive user interface, Oli Tel is the solution to making high quality calls for a fraction of the cost. Utilizing the latest advances in VoIP technology, you can be ensured that all your communications are secure and affordable. • Oli Tel is a SIP-based soft phone. You can call your friends and family from Oli Tel with lowest international call rates! And very good quality. Features • SIP-based Softphone with exceptional voice quality • Works from Wi-Fi/3G/4G/GSM • Sup