850/900/1800/1900Mhz GSM to PSTN Convertor/GSM FWT

Main Features: Compatiable to most telephone, PBX, VOIP gateways,quintum(for call termination) Provides reversal polarity signal for metering Support DTMF 2'nd dialing Connect to Alarm systems to realise wireless alarm Support IMEI changeable(optional) backup battery 7.4V(optional) Support SIM card (1.8V,3V) Support caller ID hide/show support Locking Pin code Specifications: 1) Air interface standard: GSM850/1900Mhz,900/1,800Mhz phase 2+ full band 2) Frequency ranges: A) GSM 850 GSM 1900: I) Transmission: 869.2 893.8MHz I) Transmission: 1, 930 1, 990MHz Ii) Reception: 824.2 848.2MHz Ii) Reception: 1, 850 1, 910MHz B) GSM 900: GSM 1800: I) Transmission: 890 915MHz I) Transmission: 1, 710 1, 785MHz Ii) Reception: 935 960MHz Ii) Reception: 1, 805 1, 880MHz 3) Channel space: 200kHz 4) User line, bell signal: In line with GB/T15279 5) Max power: 0.25W / 0.5W 6) Consumption: A) Immobility: Less than 25mAh B) Transmission: Less than 400mAh 7) Sensitivity: -105dB 8) Dial tone frequency: 450MHz (standard) 9) Surrounding temperature: -10°C +40°C 10) Relative humidity: 45% 90% (without frost) 11) Atmosphere pressure: 86 106KPa 12) Environment noise: <60dB 13) Antenna amplifying: 3.5dB (omni directional), 12dB (certain direction / Chosen direction) 14) Input: AC100 - 230V, 50 / 60Hz Output: 12V 1A 15) Connector of power: US or European type 16) Dimensions (L x W x H) (average): 185 x 135 x 22mm 17) Colors: White/blue/black (optional) 18) Connection mode: RJ-11 phone sockets 19) Antenna connection: SMA antenna connection Package: one pcs GW:0.65kg Mea.:28.5cm*17cm*5cm one CTN GW:13kg/20pcs Mea.:59cm*26cm*35cm 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 connecting alarm system three color: