Airtone is the Mobile Dialer that allows to make VoIP calls fromany of the android devices and it uses 3G/Edge/Wi-Fi Internetconnectivity. It is developed based on the requirements of VoIPProviders business needs.
Airtone Features:-
It uses SIP protocol based for signaling
Supports G729, PCMU, and PCMA codecs
Runs behind NAT or Private IP
User Friendly Interface
Auto Sync of Balance
Real Time Sip status messages
Call History
Address book integration
Compatible with all sip standard switches
Airtone has very efficient implementation of jitter buffer to playvoice smoothly.
Silent suppression and comfort noise generation has been used toreduce the bandwidth usage, and this makes the dialer moreefficient in making VoIP calls.
It easily integrates with mobile phonebook and auto detects (+)sign when contact is picked from phonebook.”