AirLink Communications Raven X HSDPA Betriebsanweisung Seite 74

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Seitenansicht 73
Data Communication and Host Modes
Rev 2.0 Jul.09 67
Figure 8-10: AceManager: Firewall
Keepalive
Keepaliveisusedtotesttheconnectiontothecellularnetwork
bypinginganIPaddressafteraspecifiedperiodofinactivity.
Keepaliveisonlyrecommendedforuserswhohavearemote
terminatedmodemthatinfrequentlycommunicatestothe
networkorifyouhaveexperiencedissuesovertimewherethe
modem
cannolongerbereachedremotely.
WhenKeepalivepingstheIPaddress,anacknowledgement
indicatesthereisanactiveconnectiontothenetwork.Ifthe
RavenXEdoesnotreceivearesponsefromtheIPaddress,it
willmakeadditionalattemptsaccordingtoabackoffalgorithm
beforedeterminingtheInternetconnectionisnotfunctioning
properly.Ifit
determinestheconnectionisnotfunctioning,the
modemwillthenattempttoreconnecttoyourcellular
providedtoreestablishIPconnectivity.
Configuring Keepalive
InAceManager,theKeepalivesettingsarepartoftheOther
group.
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