User guide

AirCard® 597E ExpressCard - User Guide
12 2130917
The CDMA wireless network
Note: More information about
CDMA networks is available on
the CDMA Development Group
web site, www.cdg.org .
Thisistheworldwideinfrastructureprovidingtheradio
coveragethatallowsyoutostayconnected.Madeupofradio
towersandavarietyofnetworkswitches,routers,andservers,
thenetworkisaninterconnectionofmanyserviceproviders.
Note: Most service providers
have coverage maps on their
web sites.
ThereareCDMAnetworksthatoperateinthefrequencybands
supportedbytheAirCardExpressCardthroughoutNorth
AmericaandpartsofLatinAmerica,Asia,andNewZealand.
However,eachserviceprovideroperatesanetworkthatcovers
alimitedgeographicalareawithintheoverallCDMAcoverage
area.
Note: The fee for service is
usually higher when you are
roaming (connecting to a
network other than the one
belonging to your service
provider).
Mostserviceprovidershave“roaming”agreementswithother
serviceproviders,sothattheycanofferserviceoutsideof the
coverageareaoftheirownnetworks.Forexample,assuming
youliveinVancouver(Canada),andtravelfrequentlyto
Seattle(UnitedStates),youcanobtainanaccountwitha
Vancouverserviceprovider
thathasaroamingagreementwith
aserviceproviderinSeattle.Youwouldthenhavelocalservice
inVancouver,androamingserviceinSeattle.