Sierra Wireless MP 880W Guía de usuario Pagina 15

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Introducing the MP Modem
Rev 1.5 Jul.08 15
Account provisions Youraccountmayrestrictusageof
certainnetworksormaylimityourconnectiontimeordata
transmission.
Supported GSM radio frequencies
TheMPmodemhastribandcapabilityonHSUPAandUMTS
networks,operatingon:
850MHz
1900MHz
2100MHz
andquadbandcapabilityonEDGEandGPRS,operatingon:
850MHz
900MHz
1800MHz
1900MHz
Connection methods
YoucanconnecttheMPmodemtoaUSB,Ethernet(RJ45),or
serial(DB9)portonacomputer.WhenconnectedtoaUSBor
Ethernetport,theMPmodembehaveslikeanetworkcard.
Whenconnectedtoaserialport,theMPmodembehaveslikea
dialupmodem.
TheMPmodemalsosupportsconnectionsviaIEEE802.11b/g
(MP595).See
Chapter6formoredetails.
Virtual serial port
TheMPmodemsupportsfourvirtualserialports(VSPs).
ThreearereservedforinternalusebytheMPmodem.The
remainingVSP,whichiscalledSierraWirelessApplication
Interface2,isassignedtoaspecificCOMportthatvaries
betweenusers.ThisVSPcanbeused,forexample,tosendAT
commands,ortorunapplicationssuchasHyperTerminal
.
SpecialMPmodemmodessuchasGPSthataresupportedon
aserialportarealsoavailableonthevirtualport.Forexample,
withthevirtualportenabled,amappingapplicationonyour
computerthatnormallylistensforGPSmessagesonaserial
portlistensforthosesamemessagesonthe
virtualport.
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