• 12 VoIP accounts • Call hold • Mute, DND • Redial, call return • auto answer • One-touch speed dial, hotline • Call forward, call waiting, call transfer • Group listening, SMS • Emergency call • 5-way conferencing • 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) • USB port (2.0 compliant) for: - Wired/wireless USB headset - USB call recording through USB flash drive - Bluetooth headset through BT40 - Bluetooth call through BT40 - Mobile contacts synchronization through BT40 - Simultaneous connection of one headset and one mobile phone through BT40 - Wi-Fi through WF40/WF50 - Expansion module EXP50 (up to 3) - Wireless Headset Adapter EHS40 • USB/Bluetooth connectivity to Yealink CP900/CP700 speakerphone, USB connectivity to Yealink UH36 headset: - Basic functions: Answer / end, call mute - Enhanced function: audio optimization, redial, call hold, volume synchronization, multiple calls control • Content Sharing (via Yealink VCD) • Enhanced DSS key |