High-performance SIP cordless phone system 2.4" 240 x 320 TFT color screen with intuitive user interface Up to 20 simultaneous calls Up to 10 DECT cordless handsets Up to 10 SIP accounts Flexible Noise Reduction (FNR)/Noise Cancellation Up to 21-hour talking time (in ideal conditions) Up to 166-hour standby time (in ideal conditions) 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