Doc Phone is a new and Unique SIP Phone, it is Exclusive for Documantal Customers. Doc Phone offers a friendly user interface and amazing audio quality for a smooth Voice Over IP Experience. Doc Phone provides every action and features available such as:- Bluetooth Headsets Support- Lowest Battery Usage with highest availability- Amazing Audio Quality, even on older Devices- 24/7 Push support- Keeps running even when minimized- Supports Calling Over 3G, 4G and Wifi- Supports Secure Calls- Doesnt require a VPN connection to work- Support TLS and SRTP- Integrated with Contact List- Supports Calls History- Speakerphone, Mute and Hold- Supports Call Transfer- Supports Join Calls- UDP and TCP Transport- Built-in Echo Cancellation- Supports all codecs- Supports Sending of DTMF- STUN Support- Call Waiting- Video Support- ZRTP Support- Can be Used for Receiving or Dialing