ProductFeatureTri-BandGSM/GPRSmodule:EGSM900/DCS1800/PCS1900 CompliantwithGSMPhase2+standard ControlviaATcommands SupplyVoltagerangefrom3.3vto4.2v VoiceHR/FR/EFR Noisededuction,echocancellation Telephony EmergencyCall DualToneMultiFrequencyFunction(DTMF) ShortMessageService(SMS)DeliveryReport PointtopointMT/MO CellBroadcast GSMCircuitSwitchedDataAsynchronous Transparent/non-transparent Upto14.4kbps GPRSPacketDataGPRSClassB GPRSMulti-slotClass4 4slotdownlink(86.6kbps),2slotuplink(42.8kbps)max5slot CodingSchemes:CS1toCS4 SupplementaryServicesNumberidentification Callforwarding(CallDivert) Callcompletion MultiParty Charging Callbarring InterfaceAntennaInterfaces: RFconnectorsupportcoaxialcable RFpadssupportRFcablesoldering 44-pinB2Bconnectorincluding: UART/RS232 SIM(1.8V/3V) GeneralPurposeI/Os Analogaudioinput/output Powersupplyconnection ATcommandsetaccordingtoGSM27.05,27.07 GeneralInformationDimension:55.5x40x5.95mm Weight:15g OperatingTemperature:-20~+60°C FunctionalTemperature:-20~+70°C StorageTemperature:-40~+85°C