Tringy

Tringy is a mobile dialer or application which makes VoIP calls with minimum iOS version support of 8.0 on Apple iPhone, iPod and it uses the 4G/3G/Edge/wifi Internet connectivity.
Tringy is a smart mobile dialer application that facilitates VoIP calling over the internet to any landline or mobile devices around the world. The application is most beneficial for making long distance or international calls at low rates utilizing the VoIP services from your favorite service provider. The zero noise, high call quality and intuitive UI makes the application most sought after VoIP calling application.
Features :-
Tringy uses SIP protocol based for signaling.
Tringy Supports all codecs.
Tringy run Behind 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.