Features: Based on w-cdma and can be compatible with gsm networks Can connect to phone, pbx, voip, ip-pbx , billing meter and etc. Support connecting with internet through usb line and can surf the internet wirelessy. The pc computer can send and receive text messages by its connection Can lock sim card Support caller id with dtmf/fsk Dtmf and pulse dialing Support sms Reversal polarity signal supported for billing charging Making and answering calls after connecting to telephone set 2rj-11 ports can support connect with extension Real time displaying of wireless network signal strenght Technique parameters Multimode operation ¿chsupa/hsdpa/umts/edge/gprs/gsm Triple-band hsdpa/umts 850/1900/2100 mhz Quad-band edge/gprs/gsm 850/900/1800/1900 mhz Hsupa uplink up to 2.0 mbps Hsdpa downlink up to 7.2 mbps Wcdma (umts) uplink data rate up to 384 kbps Edge data up to 237 kbps dl and 118kbps ul, 3gpp release4, class 12 Gprs data up to 85.6 kbps dl and 42.8 kbps ul Power supply: dc12 v Output power: Class 3 for umts/hsdpa/hsupa Class 4 for gsm 900 Class 1 for gsm 1800 Class e2 for edge 900/1800 Usb: usb 2.0 full speed Antenna interface: Antenna gainú¦ >1.5dbm Sensitivity: < -104 dbm Antenna transimission power: < 3 w Working environment ú¦ Operating temperature: -10 ~ +55íµ Storage temperature: -40 ~ +80íµ Atmosphere pressure:86-106kpa Environment noise:ú+60db Rj-11 phone interfaceú¦ On hook voltage: 45v Off hook current: 30ma/41ma Dialing tone frequency : 450hz Packing information: Size:173(l)íß128(w)íß29(h) Weight: 282g Package: 1pcs/box; 20pcs/ctn Carton size: 58.5íß29.5íß37.5cm G.W/ctn: 16kg