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WCDMA的3G語音網(wǎng)關(guān)，語音清晰，反極準(zhǔn)確，質(zhì)量穩(wěn)定，不死機(jī)。參數(shù)與PSTN相同。價格優(yōu)惠。 WCDMA網(wǎng)絡(luò)帶寬寬，在一間屋內(nèi)可以同時500線以上上車落地，不會有2G網(wǎng)張那樣的通道限制。而且話費(fèi)便宜，語音更清晰，是做VOIP上車、落地的最佳選擇。 相關(guān)參數(shù)如下：Features: ◇ Dialingtonewith450hz◇ DTMFDialing◇ Bellsignal◇ Polarityreversal◇ TheRJ-11socketwhichconnectthephoneortheVOIP◇ Antennasocket(FME)◇ IPusageswitch◇ Workingstateindicator◇ SignalStrengthindicatorTechnicalSpecificationsGSMModuleDualbandGSM850mhz/900mhz/1800mhz/1900MHz/2100MHZ Phoneinterface：supplyRJ-11PhoneInterface Hangingvoltage:45V Pickingoffvoltage：30mA/41mA DialingtoneFrequency：450Hz Antennainterface：Antennaamplifying〉1.5DBSensitivity〈-104DBMTransmittingpower 3W Adapterinterface：INPUT：AC175~260VOUTPUT：+5V/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