Synaccess-networks NP-0801DTM Manual do Utilizador descarregar pdf (Página 254)

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ENHANCEDIPSTACKEXTENSIONAT

COMMA

NDS

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HSPA+ATCommandsReferenceGuide 254

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EnhancedIPStackExtensionATCommands

QueryDNS#QDNS

ExecutecommandexecutesaDNSquerytoresolvethehostnameintoanIPaddress.

TestcommandreturnstheOKresultcode.

Syntax

Command Commandtype

AT#QDNS=[<hostname>] Execute

AT#QDNS=? Test

ParametersandValues

<hostname> Stringtype,hostname.

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IftheDNSqueryissuccessful,theIPaddressisreportedintheresultcode,as

follows:

#QDNS:<hostname>,<IPaddress>

Where:

<hostname>‐stringtype.

<IPaddress>‐stringtype,intheformat“xxx.xxx.xxx.xxx”.

Notes

 ThecommandhastoactivatetheGPRScontextifitwasnotpreviouslyactivated.Inthiscasethecontextis

deactivatedaftertheDNSquery.ItalsoworkswithGSMcontext,buttheGSMcontexthastobeactivated

before.

 ThiscommandrequirescorrectsettingsforauthenticationparametersandthattheGPRSnetworkispresent(or

GSM,ifGSMcontextisused).

 Thiscommandisavailableonly onthefirstvirtualportofCMUXandworksonthePDPcontext1andonthefirst

ConnId.SeeAT#SCFG.

DNSResponseCaching#CACHEDNS 

SetcommandenablescachingamappingofdomainnamestoIPaddresses,asdoesaresolverlibrary.

ReadcommandreportswhethertheDNSResponseCachingiscurrentlyenabledornot,intheformat:

#CACHEDNS:<mode>

Testcommandreturnsthecurrentlycachedmappingalongwiththerangeofavailablevaluesforparameter

<mode>,intheformat:

#CACHEDNS:[<hostn1>,<I

Paddr1>,[…,[<hostnn>,<IPaddrn>,]]](0,1)

where:

<hostnn> Hostname,stringtype.

<IPaddrn> IPaddress,stringtype,intheformat“xxx.xxx.xxx.xxx”.

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