Installation guide

Rev 4 Mar.11 57
A
Appendix A: Glossary
1X OneTimesRadioTransmissionTechnology(theʺonetimesʺ
referstothefrequencyspectrum)
bps bitspersecond—Theactualdataspeedoverthetransmission
medium.
CAB CABinetfiles.AWindowsexecutablefileformatcontaining
systeminstallationinstructionsandcontentforself‐extraction
andinstallation.
CDMA CodeDivisionMultipleAccess—Awidebandspread
spectrumtechnique
usedindigitalcellular,personalcommu‐
nicationsservices,andotherwirelessnetworks.Wide
channels(1.25 MHz)areobtainedthroughspreadspectrum
transmissions,thusallowingmanyactiveuserstosharethe
samechannel.Eachuserisassignedauniquedigitalcode,
whichdifferentiatestheindividualconversationsonthesame
channel.
CDMA 1X Alsoknown
as1X,thisisahigh‐speedstandardforCDMA 
cellularcommunications.
circuit switched cellular V.x x modemcommunicationsoveracellularnetwork.Ituses
adedicatedconnectioncircuit,incontrasttopacket‐switched.
Theuserischargedbythecarrierforthedurationofthe
connection.
DHCP DynamicHostConfigurationProtocol—Aprotocolused
to
automaticallyassignIPaddressesandrelatedinformation.
DHCPalsoprovidessafe,reliableTCP/IPnetworkconfigu‐
ration.
dormant ThepacketdataconnectionhasthelogicalPPPsessionleft
openwhiletheunderlyingphysicallink(theradiochannel)is
released.Whentrafficistoresume,aradiochannelisre‐
aquired
andtheoriginalPPPsessionresumes.
E911 Enhanced911—Thecapabilitytoautomaticallyidentify,to
emergencydispatchers,thelocationfromwhichawirelesscall
isbeingmade.Phase Irequirescarrierstoprovidethe
telephonenumberofamobilemakinga911callandthe
locationofthecellsiteorbasestation
handlingthecall.
Phase IIrequirescarrierstodelivermorespecificlatitudeand
longitudelocationinformation,knownasAutomaticLocation
Identification (ALI).This typicallyinvolvesGPSreceiversat
themobile.
ESN ElectronicSerialNumber—Theuniqueserialnumber
assignedtothemodemforcellularnetworkuse.