F2Calls app for iPhone and iPad

F2Calls is a mobile dialer or application which makes VoIP calls with minimum iOS version support of 3.2 on Apple iPhone, iPad, iPod and it uses the 3G/Edge/wifi Internet connectivity.

F2Calls is developed based on the requirements of VoIP Providers business needs.

Features :-

F2Calls uses SIP protocol based for signaling.
F2Calls Supports all codecs.
F2Calls run Behind NAT or private IP.
User Friendly Interface.
Auto Sync of Balance.
Real Time Sip status messages.
Call History.
Loud Speaker.
Hold.
Address book integration.
Compatible with all sip standard switches.
It 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.