U2Call

U2Call is the Mobile Dialer that allows to make VoIP calls from any of the android devices and it uses 3G/Edge/Wi-Fi Internet connectivity. It is developed based on the requirements of VoIP Providers business needs.U2Call Features:-It uses SIP protocol based for signalingSupports G729, PCMU, and PCMA codecsRuns behind NAT or Private IPUser Friendly InterfaceAuto Sync of BalanceReal Time Sip status messagesCall HistoryAddress book integrationCompatible with all sip standard switchesU2Call has very efficient implementation of jitter buffer to play voice smoothly.Silent suppression and comfort noise generation has been used to reduce the bandwidth usage, and this makes the dialer more efficient in making VoIP calls.It easily integrates with mobile phonebook and auto detects (+) sign when contact is picked from phonebook.”