ModelMG323ExternalInterface50PINBoardtoBoardApprovalsCE/GCFPerformance ProtocolProtocolCompatiblewithGSM/GPRSPhase2/2+FrequencybandsQuad-BandGSM: 850/900/1800/1900MHzProcessorARM9USIM/SIM 1.8/3VStandard6PINSIMcardinterfaceSupplyVoltageRange3.3Vto4.2V(Recommended:3.8V)InterfacesMolex50-pinboard-to-boardconnector: Powersupply 2analogaudiointerfaces RS-232 SIMcardinterface ResetDimensions: 32.5*35.0*3.1mm（Max.）Weightapprox.10gFunctionSpecificationATCommandV.25ATcommandGSMstandardATcommandHuaweiextendedATcommandAdditionalFeaturesOnboardTCP/IPprotocol(ACK/Bufferoflargecapacity)SIMApplicationToolkitMultiplexRS232interfaceESDcontactdischargevoltageof8kv,airdischargevoltageof15kvAccessoriesUsermanualHUAWEIMG323ProductDescriptionATCommandReference