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Sierra Wireless 20070914 Modem User Manual

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Data Communication and Host Modes

Rev 3.0B Feb.08 47

• UDPandUDPPAD:Anydatareceivedontheserialport

isassembledintoUDPpacketsandsenttothesession’s

associatedIPaddressandPort(describedlater).Any

responsesreceivedfromtheassociatedIPaddressandport

destinedfortheDevicePortareunwrappedandsentout

theserial

port.

• TCPandTCPPAD:Anydatareceivedontheserialportis

packagedintoTCPmessagesandsenttothe associated

connection’sIPaddressandPort(describedlater).Any

datareceivedfromtheTCPpeerisunwrappedandsent

outtheserial.

Data Communication

• PublicandPrivateModes:ThemethodusedbytheRaven

topassanIPaddresstoaconnecteddevice.

• Keepalive:HowtheRavenmaintainsitsconnectiontothe

cellularnetwork.

Basic Modes

Start up Mode

TheserialportoftheRavencanbeconfiguredtoenteranyof

themodesautomaticallyonpowerup(inmostcases,thisis

alsoafterithasregisteredonthecellularnetwork).Thisis

donebysettingtheStartupModeDefaulttothedesiredmode.

Ifthissettingisnon

‐zero,themodemwillenterthespecified

modeafter5seconds.Ifyouwanttocancelthisbehavior,the

ATMD0commandcanbeusedbeforethe5‐secondtime‐out

expires.

YoucanconfiguretheStartupModeinAceManageratpartof

theUDPgroup.

Figure 6-1: AceManager : UDP - MD

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