Sierra Wireless Wireless Modem Guia do Utilizador descarregar pdf (Página 10)

Sierra Wireless USB Modem User Guide

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• UniversalMobileTelecommunicationsSystem(UMTS)—

384 kbps(kilobitspersecond)

• EnhancedDataratesforGSMEvolution(EDGE)—

236 kbps

• GeneralPacketRadioService(GPRS)—56 kbps

GPRSandEDGEaresecondgeneration(2G)dataservices.

UMTS,HSDPA/HSUPA,andHSPA+are3Gdata services.

Whenestablishingaconnection,yourmodemusesthefastest

availableservice.If,for

example,youareusingthemodemin

anareathathasEDGEservicebutnotUMTSorHSDPA/

HSUPAservice,themodemconnectsusingEDGEservice.

Oncetheconnectionisestablished,youhaveaccesstoall

Internetservices.

Your account and coverage area

Note: If you purchased the

modem from a GSM service

provider, you may already have

an account and a SIM card.

Otherwise, your retailer should

be able to give you the names of

companies that provide these

items.

YoumusthaveanaccountwithaGSMserviceprovidertouse

themodem.Tousethemodem’s3Gcapability,youraccount

mustbewithaserviceproviderthatoffersHSPA,HSPA+or

UMTSservice.(Themodemisbackwardscompatiblewith2G

service.)

Whenyouobtainyouraccount,youaregiven

aSubscriber

IdentityModule(SIM)cardcontainingaccountinformation.

Beforeyouuse themodem,youmustinserttheSIMcardinto

it.

Yourabilitytoobtainservicedependsonthesefactors:

Note: The fee for service is

usually higher when you are

roaming (connected to a network

other than the one belonging to

your service provider).

• Networkcoverage—Youmustbewithinthenetwork

coveragearea.

• Serviceprovider—Ifyouarewithinthecoverageareaofa

networkthatisnotoperatedbyyourownserviceprovider,

youcanobtainserviceonlyifthereisaroamingagreement

betweenyourserviceproviderandthenetworkoperator.

• Account

provisions—Youraccountmayrestrictyour

usagetocertainnetworksorlimittheamountoftimeyou

canusethenetwork.

• Frequencyband—Youcannotconnecttonetworks

operatinginbandsnotsupportedbyyourmodem,

regardlessofroamingagreementsoraccountprovisions.

MostserviceprovidershavecoveragemapsontheirWeb

sites.

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