New Brand 8 channels GSM Gateway(GSM FWT)

Main Features: 1)Supports 850/900/1800/1900Mhz 2)every port has 8 sim cards, 8 sim cards can rotate by talk time, call out times, standby time 3)Support 2'nd dialing 4)Provide reversal polarity signal, 12Khz, 16Khz for metering 5)Support hide caller ID 6)Support prohibit call in or call out 7)Lock network, Locl sim 8)can work with alarm system 9)IMEI No. is changeable Parameter: Phone interface: supply RJ-11 Phone Interface Picking off voltage: 30mA / 41mA Antenna interface: Antenna amplifying>1.5db Transmitting power<3W Adapter interface:INPUT:AC 175 260V OUTPUT:+12V/1000MA Operation Circumstance: Operation temperature: -10c 60C Storage temperature:-20C 70C Operation humidity:45%-95% Atmosphere pressure:86-106Kpa Environment noise: <60DB Sensitivity: <-104dbm Antenna Amplifying: >1.5db Dialing frequency: 450Hz Hanging voltage: 45V Picking current: 30mA/41mA Package: Product dimension: L455x W280 x H45mm Gift box dimension: L510x W170x H64mm G.W: 5.0kg Application: *For those where PSTN-line telephone service is unavailable *connecting to serucity system to imitating pstn line *Used as voice termination for VOIP provider