Specifications

SerialPortConfiguration
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 DSR:
SetstheDataSetReadytoAlwaysOn,OnWhenAvailable,OnWhenConnectedorAlwaysOff.TheDSRparameter
determineshowthemodemcontrolsthestateoftheDataSetReadycircuit.ThedefaultvalueisAlwaysOff.
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― AlwaysOn:DSRisalways
on.
― OnWhenAvailable:DSRisonwhentheRFsignalpresentandphoneregisteredonnetwork.
― OnWhenConnected:DSRisonwhenconnectedtoCDMA.
― AlwaysOff:DSRisalwaysoff.
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 DCD:
TheDCDparameterdetermineshowthemodemcontrolsthestateofthe
CarrierDetectcircuitandtheamberDCD
LEDonthefrontpanel.ThedefaultvalueisConnectOn.
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― AlwaysOn:DCDisalwayson.
― ConnectOn:DCDisonwhenconnectedtoaremotehost.
― AlwaysOff:DCDisalwaysoff.
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 RI:
TheRIparameterdetermines
howthemodemcontrolsthestateoftheRingIndicatorcircuit.Thedefaultvalueis
AlwaysOff.
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― AlwaysOn:RIisalwayson.
― ConnectOn:RItracksincomingringpulse.
― AlwaysOff:RIisalwaysoff.
8.1.1 EXTERNALPADSETTINGS
 PADMode:
SelectbuttontosetthePADmodeofthemodemasaServerorClient.
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― ServermodewaitsforinboundTCPconnectionsfromremoteclientorUDPdatabeingsenttotheexternal
modem’sIPaddress.Forexample,servermodecanbeusedformobiletermination
calls.Wheninserver
mode,itispossiblefortheconnectedserialdevicetomakeanoutboundTCPorUDPconnectionwhenanAT
Commandisissued(remoteIPaddress:portnumber,e.g.ATD*166.23.42.10:5000).
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― Clientmodekeepsanalways‐onTCPconnectiontoaremoteserverorsendsall
UDPtotheIPaddressand
portnumberspecified.Forexample,clientmodecanbeusedformobileoriginationcalls.
Note:ItispossibletooverrideServermodeandmakeanoutgoingclientconnectionusingtheRS‐232commandset.
atd*xxx.xxx.xxx.xxx–Wheninservermode,andnoconnectionisactive,
theatd*command(followedbyanIPaddress)can
beissuedtoinitiateanoutboundclientconnectiontothespecifiedIPaddressandOutgoingPortparameter.Tohang‐up
suchaconnection,3‘+’charactersmustbeinsertedintotheoutgoingstream(“+++”).Themodemwillreturntocommand
mode
onceithasseenthe“+++”andrespondwithOK.Theconnectioncanthenbebrokenbyentering“ath”.Themodem
willreturntoservermode.Suchaclientconnectioncanberepeatedagainasnecessary,aslongaseachconnectionishung‐
upbeforeanewoneismade.