我公司專為配合VOIP網(wǎng)關(guān)上車落地用而研發(fā)生產(chǎn)的GSM/CDMA網(wǎng)關(guān)，語(yǔ)音清晰，反極準(zhǔn)確，質(zhì)量穩(wěn)定，不死機(jī)。參數(shù)與PSTN相同。價(jià)格優(yōu)惠。 而且可以修改IMEI碼。有32張卡可以自動(dòng)切換。有效突破封鎖。是做VOIP上車、落地的最佳選擇。產(chǎn)品極受全球歡迎。已經(jīng)銷售超過10000臺(tái)。相關(guān)參數(shù)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