Features: 1) Management: a) LCD screen displayed menu and keypad settings b) Built-in web configurator c) Supports secured HTTP auto-provisioning 2) Physical specifications: a) Dimensions: 127 (W) x 45.7 (D) x 20 (H)mm b) Weight: 105g 3) Hardware specifications: a) Notification: ringer, vibration b) Display: mono-LCD, 112 x 64 dots c) Buttons: 0~9, *, #, 11 functional keys d) Port: one ear-phone jack, one USB-type connector for charger e) Battery: 3.7V, 1,350mAh 4) System requirements: a) Available 802.11b or 802.11g access point b) High-speed Internet connectivity c) A CD-ROM drive d) Windows 98SE, Me, 2000, or XP 5) Specifications: a) Wireless b) IEEE 802.11b support c) Frequency band: 2.400 ~ 2.4835GHz d) Channel: FCC Ch1~11, ETSI Ch1~13, Japan Ch1~14 e) Data rate: 11 / 5.5 / 2 / 1Mbps f) Output power: 17.06dBm g) Sensitivity: -82dBm@11Mbps h) Operating range: out-door up to 300m, in-door up to 75m i) 64/128 bit WEP encryption j) Supports site survey and wireless profile 6) Voice: a) Supports open standard SIP v2 (RFC3261) b) SDP (RFC2327) c) RTP (RFC1889) d) RTCP (RFC1890) e) CODEC support: G711, G.729a f) G.168 echo cancellation g) Silence suppression h) Voice activity detection (VAD) i) Comfort noise generation (CNG) j) Message Waiting Indicator k) Built-in phone book l) QoS support TOS / DiffServ m) Standby time 13 ~ 24 hour (depend on wireless environment) n) Talk time: 3.2 ~ 4 hour 7) NAT traversal: a) Outbound proxy b) STUN (RFC 3489) c) Manual configured WAN and SIP address 8) Network: a) IP address assignment: Fixed IP, DHCP client, PPPoE, HTTP, TFTP, TCP, UDP, DNS, ARP, ICMP 9) Operation environment: a) Temperature: 0 - 40°C b) Humidity: 20% - 85% (non-condensing)