我公司專為配合VOIP網(wǎng)關上車落地用而研發(fā)生產(chǎn)的GSM/CDMA網(wǎng)關,語音清晰,反極準確,質(zhì)量穩(wěn)定,不死機。參數(shù)與PSTN相同。價格優(yōu)惠。 而且采用最新技術可以讓設備自動修改IMEI碼。有32張卡可以自動切換。切換方式靈活,可以根據(jù)撥號次數(shù),通話時間,待機時間,指定時間自動換卡。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。相關參數(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