Yealink SIP-T58A Smart Media Phone
The Yealink SIP-T58A is a simple-to-use smart media phone that provides an enriched HD audio and video calling experience for business professionals. 
 
Yealink SIP-T58A Smart Media Phone Features and Specifications
7 inch (1024 x 600) capacitive adjustable touch screen
720p30 HD video • Runs Android 5.1.1
Built-in Bluetooth 4.0+ for headsets and pairing mobile devices
Built-in Wi-Fi (802.11b/g/n)
USB 2.0 port (2.0 compliant) for USB headset, media and storage applications
Opus Codec support
Up to 16 VoIP accounts
Up to 3-party video conferencing
Up to 5-party video/audio mixed conferencing
Wall mountable
Color-screen Expansion Module support
16 VoIP accounts
Call hold, call forward, Call waiting, call transfer 
One-touch speed dial, hotline
Mute, DND
Group listening, emergency call
Redial, call return, auto answer
Direct IP call without SIP proxy
Ring tone select/import/delete
Set date time manually or automatically
Dial plan, action URL/URI
RTCP-XR (RFC3611), VQ-RTCPXR (RFC6035)
Three-party video conferencing
Five-party audio/video mixed conferencing
Data import/export via Bluetooth, email, etc.