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Sierra Raven EDGE Network Card User Manual

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Introduction to the Raven

Rev 3.0B Feb.08 15

addressforyourmodem,youcanuseaDynamicDNSservice

(suchasIPManager)totranslateyourIPaddressintotoa

domainname.

Caution: If you want to connect remotely to your Raven using TCP/

IP, the IP address given to your modem by your cellular provider

cannot be a private or internal IP address (such as a custom APN or

special private network) unless you are on the same network or inside

that network’s firewall (such as with frame relay).

EDGE Communication

GSMNetworksuseSIMcardswhicharesmartcards

containingtheaccountholder’sdetails.ASIMcangenerallybe

movedfromonedevicetoanotherallowingforaccountporta

‐

bilityandflexibility.

EDGE

EDGE(EnhancedDataratesforGSMEvolution)providesend‐

to‐endpacketdataserviceswithanenhancedconnectivity

buildingonGPRStechnologyandusingtheestablishedGSM

networks.EDGEprovideshighertransmissionratesandbetter

transmissionqualityfordatathanGPRS.EDGEcancarrydata

atspeedstypicallyupto 384

kbit/sinpacketmode.

WhenEDGEisnotavailable,yourRavenwillfall‐backto

GPRSfortheconnectiontoyourcellularprovidertoprovide

continuedconnectivity.

GPRS

GeneralPacketRadioService(GPRS)ispacket‐switchedwith

manyuserssharingthesametransmissionchannel,butonly

transmittingwhentheyhavedatatosend.Thismeansthatthe

totalavailablebandwidthcanbeimmediatelydedicatedto

thoseuserswhoareactuallysendingatanygivenmoment,

providinghigherutilizationwhere

usersonlysendorreceive

dataintermittently.GPRSprovidesspeedsof30–70kbpswith

burstsupto170 kbps.

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