Ringie

Ringie is a productive channel to make best quality VoIP calls for lower rates. Basically, it is a downloadable mobile dialer app that comes with versatile features. It works on all Android enabled devices with internet connectivity via 3G/Edge/Wi-Fi, etc.
Ringie is designed to give an edge for VoIP Providers in improving their customer base. The following are the key features making it an ideal mobile dialer.
Key Features:
No call disconnection in limited bandwidth areas
Supports G729,PCMU, PCMA codecs
Loud Speaker
Smart UI
Real-time SIP status messages
SIP based protocol for Signaling
Explicit Call History
Automatic Balance Syncing
Address Book Integration
Conducive to all SIP standard switches
Operates behind NAT or Private IP
Smooth voice through jitter buffer technique
Silent suppression and comfort noise generation for limited bandwidth use
Auto detection of contacts picked from phone book
Gain a thorough VoIP calling experience through this simple, but yet effective mobile dialer app.