Expofone 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.
Expofone is developed based on the requirements of VoIP Providers business needs.
Expofone uses SIP protocol based for signaling.
Expofone Supports all codecs.
Expofone run Behind NAT or private IP.