【實用商業app】U2CALL_|最夯免費app-綠色工廠好玩App

With the best calling features incorporated on its interface, the new U2CALL mobile dialer makes your VoIP calling even more interesting and sophisticated. This app allows you to make calls with limited connectivity via 3G/Edge/Wi-Fi/GPRS, etc. It runs on ios supporting even the minimum iOS version of 6 on iPhone, iPad, iPod, etc. Salient Features of U2CALL:In sync with codecsComprehensive interfaceUpgraded call historyUses SIP based protocol for signalingOperates behind NAT and private IP Auto sync of balanceLoud speakerHoldReal-time SIP status messagesAddress book integrationCompatible with all SIP standard switchesUses silent suppression and noise comfort generation to reduce bandwidth usageU2CALL is the customized mobile application designed exclusively for VoIP Providers. The call quality using this app is of higher standards irrespective of the regions, the calls are made to.