U2CALL_ app for iPhone and iPad

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 codecs
Comprehensive interface
Upgraded call history
Uses SIP based protocol for signaling
Operates behind NAT and private IP
Auto sync of balance
Loud speaker
Hold
Real-time SIP status messages
Address book integration
Compatible with all SIP standard switches
Uses silent suppression and noise comfort generation to reduce bandwidth usage
U2CALL 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.