Twenty Simultaneous Calls，IP54，HD Audio ，TLS&SRTP Security Encryption，Backup System，Centralized Deployment，Quick Charge，Vibration Alarm，OTA Upgrade，Long Standby Time

Easy Customization and High Expansibility--•HD Audio •Efficient Installation and Provisioning •Secure Transport and Interoperability

• High-performance SIP cordless phone system • 1.8" 128 x 160 TFT color screen with intuitive user interface • Ruggedized DECT handset with IP54 protection rating • Up to 20 simultaneous calls • Up to 10 DECT cordless handsets • Up to 10 SIP accounts • Noise Reduction System • FNR (Flexible Noise Reduction)/Noise Cancellation • Up to 40-hour talking time • Up to 575-hour standby time • Quick charging: 10-minute charging time for 2-hour talking time • TLS and SRTP security encryption • Vibration alarm guarantees you do not miss any call, even in noisy situations • Wall mountable charger • Maximum DECT radio coverage: 50 meters indoors, 300 meters outdoors • Energy-saving ECO features • DECT technology: Yealink DECT technology focuses on high-quality Audio VoIP (wideband) and bit-rate data applications. However, we are incompatible with third-party DECT devices (base station, handset, etc.).

• 2.7" 192x64-pixel graphical LCD with backlight • Dual USB ports • Dual firmware images • T4U Auto-P template unified • T4U firmware unified • Up to 12 SIP accounts • PoE support • Dual-port Gigabit Ethernet • USB headset and EHS support • Wi-Fi via WF40/WF50 • Bluetooth via BT40/BT41/BT52 • Stand with 2 adjustable angles • Wall mountable • Handset with hall switch