Introducing the AirCard 402 modem
Document 2131145. Rev 1.0 May.09 11
whenyouinsertthemodemintoyourcomputerandgo
throughthesoftwareinstallation;aninstallationCDisnot
required.
System components
Yourmodemisjustonepartofasystemdesignedtoprovide
youwithawiderangeofcommunicationfeatures.Every
componentofthesystemisneededtoenablethesecapabilities.
Your host computing device
Yournotebookordesktopcomputerhoststhemodem
hardwareand runsthecommunicationsoftware:yourweb
browserore‐mailapplication,andWatcher—theenabling
softwareforthemodem.
Youmayalsohaveothersoftwareonyourcomputerthatcan
beusedwirelesslywiththemodem,suchas:filetransferappli‐
cations
(FTP),chatorinstantmessaging,aVPN(Virtual
PrivateNetwork)client,clientsoftwareforacorporat eserver
application.
The ExpressCard/PC Card modem
Themodemprovidesyourcomputerwithaconnectiontothe
CDMAwirelessnetwork.
ThemodemfitsintoastandardExpressCard/34or
ExpressCard/54slotor,whenusedinthecardadapter,intoa
PC Cardslotavailableonmostnotebookanddesktop
computers.
EveryCDMAnetworkoperatesononeofthreeradio
frequencybands.
Asadual‐bandproduct,themodem
operatesontwoofthesebands(seepage 34),providingawide
coveragearea.
The modem drivers and enabling
software
Themodemdriversandenablingsoftware(Watcher)monitor
andmanageyourwirelessconnections.
YourmodemusestheSierraWirelessTRU‐Installfeature—the
driversand softwareareinstalledwhenyouinsertthemodem
intoyourcomputer.
Thedevicedriversoftwareenablesthemodemtoworkwith
yourcomputer’soperatingsystem.
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