Sipring Pro

Features:

* Faster Registration

* Echo Cancellation

* Easy contact searching

* Manage Call logs

* DTMF feature

* Loud and clear voice

* Call hold, mute, loudspeaker

* Consuming low internet

* Consume less battery charge

* Works in VoIP blockades

* Supports IP PBX

* Connectivity through WIFI/3G

* Call ongoing on background

* Balance information

* Time, call status