NSR Phone is a Softphone App offering free audio/video calls and text messaging. With NSR Phone, you can be reachable at any time, even if the app is closed, with a WiFi or 3G/4G internet connection.

NSR Phone key features:
* high definition audio and video calls
* audio conference calls with various participants
* pictures and file sharing
* NSR Phone accounts reachable at any time, even if the app is closed (thanks to push notifications)
* secure communication (encryption options)
* compliant with a large number of SIP-compatible VoIP service providers allowing to reach everyone that has a "classic" phone line.

NSR Phone is available on the main mobile and desktop operating systems and offers various specific features for advanced users (codecs, transport standard, encryption options, DTMF...).