AirLink Communications Raven X HSDPA Podręcznik Użytkownika Strona 13

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Introduction to the Raven XE
Rev 2.0 Jul.09 6
Tip: If your account with your cellular provided includes a dynamic IP
address and you need a static IP, please consult your your cellular
provided Representative for more information about changing your
account for static IP support.
IfyouneedtocontactyourRavenXE,adeviceconnectedto
theRavenXE,orahostsystemusingtheRavenXEfromthe
Internet,youneedtohaveaknownIP(suchasonewhichis
static)ordomainname(anIPaddresswhichisconvertedbya
DNS
serverintoawordbasedname).IfyouhaveadynamicIP
addressforyourmodem,youcanuseaDynamicDNSservice
(suchasIPManager)totranslateyourIPaddressintotoa
domainname.
Caution: If you want to connect remotely to your Raven XE using
TCP/IP, the IP address given to your modem by your cellular provided
cannot be a private or internal IP address (such as a custom APN or
special private network Data Link) unless you are on the same
network or inside that network’s firewall (such as with frame relay).
GSM Communication
GSMNetworksuseSIMcardswhicharesmartcards
containingtheaccountholdersdetails.ASIMcangenerallybe
movedfromonedevicetoanotherallowingforaccountporta
bilityandflexibility.
HSUPA
HSUPA(HighSpeedUplinkPacketAccess)isacellular
technologywhichmostcloselyresemblesabroadband
synchronousconnection.Theuploadanddownloadspeeds
aremaximizedtoprovideafasterthroughput,reachingspeeds
upto2.0Mbit/sfortheuplinkand7.2Mbit/sforthedownlink.
Pleasecheckwithyournetworkproviderontheavailabilityof
HSUPA.
HSDPA
HSDPA(HighSpeedDownlinkPacketAccess)isacellular
technologyallowingforhigherdatatransferspeeds.In
HSDPAmodeofoperation,maxspeedsareupto7.2Mbit/sin
thedownlinkand384kbit/sintheuplink.HSDPAuses
AdaptiveModulationandCoding(AMC),fastpacketsched
ulingattheNodeB(BaseStation)andfastretransmissions
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