Basic Functions: 1. 802.11b/g, IEEE 802.1x, 802.11i; 2. WEP (64, 128 bit encryption)/ WPA /WPA2 /MD5 Auth; 3. Direct IP call without SIP registration; 4. Up to 3 SIP profiles possible; 5. Dial registered number via SIP server etc; 6. Dial URL from phone book/speed dial; 7. 1.5" TFT Color Screen;. 8. CNG/VAD/AEC; 9. Three-way calling/Call waiting; 10. WPS function ( Wi-Fi Protected Setting Up ) Charaterictics: 1. slim and smart housing. 2. Language support: English, French, Portuguese, Russian, Dutch, Simplified and Traditional Chinese. 3. 30 minutes backup while the battery is removed.