Sierra Raven EDGE Guia do Utilizador Página 54

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Data Communication and Host Modes
Rev 1.0C Jul.09 48
AT\APPP
ATDT10.0.0.1
ATDT10001
ATD#19788or#777*99***1#
CLIENT
Inresponsetoanyoftheprecedingcommands,theRavenX
willrespondwithCONNECTacarriagereturnandnewline
andisreadyforthehosttobeginPPPnegotiations.TheIP
receivedbythehostintheresultingnegotiationwilleitherbea
private(nonroutable)IPaddressor
apublic(network
routable)IPaddressprovidedbythenetwork,dependingon
thesettingsof*HOSTPRIVMODE.If*HOSTPRIVMODE=1,
thevalueoftheprivateIPaddresscanbedetermined
beforehandbyqueryingS110.TheprivateIPaddresstobe
usedcanbedefinedwiththecommand
AT*HOSTPRIVIP=192.168.100.33,substitutingthe
desiredIP
address.
Figure 6-5: AceManager : PPP/Ethernet
UsingaprivateIPinsulatesthePPPclientfromchangesinIP
addressesoftheunderlyingnetwork.Thewillperformbasic
NATlikeaddresstranslationonallpackets.
IfapublicIPaddressisbeingused,anychangesintheIP(as
determinedbythewirelessnetwork)willresultinthePPPlink
tothehostbeingdisconnected,requiringthehosttoreinitiate
it.ThepublicIPispassedtothehostinthePPPnegotiations,
sowhenthe
networkforcesachange,themodemhastoforce
thehosttorenegotiatethePPPlinktomakethishappen.
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