我公司專為配合VOIP網關上車落地用而研發生產的GSM/CDMA網關，語音清晰，反極準確，質量穩定，不死機。參數與PSTN相同。價格優惠。 而且可以修改IMEI碼。有32張卡可以自動切換。有效突破封鎖。是做VOIP上車、落地的最佳選擇。產品極受全球歡迎。已經銷售超過10000臺。 歡迎OEM,ODM.相關參數如下：Features: ◇ Dialingtonewith450hz◇ DTMFDialing◇ Bellsignal◇ Polarityreversal◇ TheRJ-11socketwhichconnectthephoneorthepayment◇ Antennasocket(FME)◇ IPusageswitch◇ Workingstateindicator◇ SignalStrengthindicatorTechnicalSpecificationsGSMModuleDualbandGSM850mhz/900mhz/1800mhz/1900MHz Phoneinterface：supplyRJ-11PhoneInterface Hangingvoltage:45V Pickingoffvoltage：30mA/41mA DialingtoneFrequency：450Hz Antennainterface：Antennaamplifying〉1.5DBSensitivity〈-104DBMTransmittingpower 3W Adapterinterface：INPUT：AC175~260VOUTPUT：+12V/1000MA OperationCircumstance: Operationtemperature：-10℃~60℃ Storagetemperature：-20℃~70℃ Operationhumidity：45% 95% Atmospherepressure：86 106Kpa Environmentnoise：〈60DB TransmittingPower:2W Sensitivity: -104dbm AntennaAmplifying: 1.5db Dialingfrequency:450Hz Hangingvoltage:45V Pickingcarrent:30mA/41mA