Wireless roaming
Base on IEEE802.11b/g and SIP protocol
High-speed transmission
54Mbps high-speed data transmission
Comfortable voice:
G.711/G.729a/b audio code, with high quality voice, low time lag, better stabilization;
Support VAD (Voice Activity Detection) / CNG (Comfort Noise Generation)/ JB (Jitter Buffer) / AEC (Acoustic Echo Cancellation)

WLAN Signal Strength and Battery Level status display;
Call log scan and speed dial;
Push to Talk function ( One key Alarm) ;
Tripartite talk;
Secondary Dial-up;
200 records phonebook;
Polylingual menu display;
Support Stop watch, Calendar, Calculator;
Support wifi wireless software upgrades;
Support wifi Quality of Service(QoS);
SMS function support;
P2P protocol (direct call without server);

Dimensions (H*W*D):150* 70* 30 mm
Weight: 400 g
Battery:Built-in 4.2V, 3000 mAh Lithium Manganese battery
Shell:  Anti-static materials according with the environmental protection standard IP57
Antenna:External antenna
Keypad: Total 22Keys, Including a 5-direct key, PTT alarm key
Display:1.8 inch 128*160 TFT color display

Time Talk Time: 18 Hours / Standby Time:120hours+
Accessories: Block-Charger, Quick Start Guide

Phone Book: 200 Records
Call History: Remembers 10 calls each of received,missed or dialed
Display Language: English/Chinese（Simplified）
IP Configuration: Static IP / Dynamic IP (DHCP)
Firmware Upgrade: Wifi wireless

Media Access Control: IEEE802.11b/g
Data Rate: 1-54Mbps
Coverage Range: Outdoors: 100+m / Indoors: 30+m
Frequency Band: 2.4GHz
Modulation Techniques: DSSS: CCK (11Mbps, 5.5 Mbps) / QPSK (2Mbps) / BPSK(1Mbps)/OFDM（54Mbps）
Working Current: ≤250mA
Standby Current: 3-5mA
Ringing loudness: ≥70dB
Antenna Impedance: 50Ω
The largest open-circuit voltage: 4.2V
Transmit Power: >15dBm
Sensitivity: <-76dBm@11Mbps
Security: WPS/WEP(64/128 bits) / WPA-PSK/WPA2

Call Control Protocols: SIP - RFC 3261; STUN
Audio: G.711, G.729a/b
        AEC/VAD /CNG/JB