Data Communication and Host Modes
Rev 3.0B Feb.08 51
•UDPandUDPPAD:Anydatareceivedontheserialport
isassembledintoUDPpacketsandsenttothesession’s
associatedIPaddressandPort(describedlater).Any
responsesreceivedfromtheassociatedIPaddressandport
destinedfortheDevicePortareunwrappedandsentout
theserialport.
•TCPandTCPPAD:Anydatareceivedontheserialportis
packagedintoTCPmessagesandsenttotheassociated
connection’sIPaddressandPort(describedlater).Any
datareceivedfromtheTCPpeerisunwrappedandsent
outtheserial.
Data Communication
•PublicandPrivateModes:ThemethodusedbytheRaven
topassanIPaddresstoaconnecteddevice.
•Keepalive:HowtheRavenmaintainsitsconnectiontothe
cellularnetwork.
Basic ModesStart up Mode
TheserialportoftheRavencanbeconfiguredtoenteranyof
themodesautomaticallyonpowerup(inmostcases,thisis
alsoafterithasregisteredonthecellularnetwork).Thisis
donebysettingtheStartupModeDefaulttothedesiredmode.
Ifthissettingisnon‐zero,themodemwillenterthespecified
modeafter5seconds.Ifyouwanttocancelthisbehavior,the
ATMD 0commandcanbeusedbeforethe5‐secondtime‐out
expires.
YoucanconfiguretheStartupModeinAceManageratpartof
theUDPgroup.
Figure 6-1: AceManager : UDP - MD