> 12 VoIP accounts > One-touch speed dial, redial > Call forward, call waiting, call transfer, call hold > Call return, group listening > Emergency call > Mute, DND > Auto answer > 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 headset through BT40/BT41/BT52 Support Yealink Bluetooth headset BH71/BH71 Workstation/BH71 Workstation Pro/BH72/BH76/UH38 through BT52 - DECT wireless headset (Yealink WH62 Portable/WH63 Portable) - Contact synchronization through BT40/BT41/BT52 - Simultaneous connection of one headset and one mobile phone through BT40/BT41/BT52 - Wi-Fi through WF40/WF50 - USB call recording through USB flash drive - USB headset - Wireless Headset Adapter EHS40 > USB/Bluetooth connectivity to Yealink CP900/CP700 speakerphone/wireless headset UH38, USB connectivity to Yealink wired headset UH34/UH36/UH37: - Basic functions: Answer / end, call mute - Enhanced function: audio optimization, redial, call hold, volume synchronization, multiple calls control > Enhanced DSS key |