Yealink SIP-T43U

Phone features
12 VoIP accounts
One-touch speed dial, redial
Call forward, call waiting, call transfer, call hold
Call return, group listening, emergency call
Mute, auto answer, DND, hoteline
5-way conference call
Direct IP call without SIP proxy
Ring tone selection/import/delete
Set date time manually or automatically
Dial Plan, XML Browser, Action URL/URI
RTCP-XR (RFC3611), VQ-RTCPXR (RFC6035)
Dual USB ports (2.0 compliant) - Bluetooth earphone through BT40/BT41 - Contact synchronization through BT40/BT41 - Wi-Fi through WF40/WF50 - USB call recording through USB flash drive - USB headset - Expansion Module EXP43 - Wireless Headset Adapter EHS40
Enhanced DSS key

*Power supply not included