HUAWEIETS12011200CDMA20001XstandardOperatingfrequency:800MHz:Up824~849MHzDownlink869~894MHzSize:226X226X551mmWeight:about1.2kgColor:BlackCallTime:2hoursStandbytime:18hoursExternalinterfaces:RS-232CThemainfeatures:High-qualityvoicecallsEmergencyCallCallerIDsupport,callBeforetheturn,thethreecallDTMFsupportfordial-upAnti-polarity/12KC/16KCbillingsignalExternalkeyboardcanadjustthesizeofthevolumeofvoiceSupportindooroutdoorantennaKeyfeatures:SupportofthepublictelephoneFaxsupportforthecomputerSupportfortheG3analogfaxSupportfortheoutdoorantennaSupportforthecardmachineandmachine-in-onecardseparationRSSI(receivefieldstrength)instructionsanddirectivespowerHigh-speeddataaccess:thehighest153.6kbps