ITU-TH.282(051999)(英)Remotedevicecontrolprotocol…….pdf

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1、INTERNATIONALTELECOMMUNICATIONUNIONH.282TELECOMMUNICATION(05/99)STANDARDIZATIONSECTOROFITUSERIESH:AUDIOVISUALANDMULTIMEDIASYSTEMSInfrastructureofaudiovisualservices–RelatedsystemsaspectsRemotedevicecontrolprotocolformultimediaapplicationsITU-TRecommendationH.282(Previous

2、lyCCITTRecommendation)ITU-TH-SERIESRECOMMENDATIONSAUDIOVISUALANDMULTIMEDIASYSTEMSCharacteristicsoftransmissionchannelsusedforotherthantelephonepurposesH.10–H.19Useoftelephone-typecircuitsforvoice-frequencytelegraphyH.20–H.29Telephonecircuitsorcablesusedforvarioustypesoft

3、elegraphtransmissionorH.30–H.39simultaneoustransmissionTelephone-typecircuitsusedforfacsimiletelegraphyH.40–H.49CharacteristicsofdatasignalsH.50–H.99CHARACTERISTICSOFVISUALTELEPHONESYSTEMSH.100–H.199INFRASTRUCTUREOFAUDIOVISUALSERVICESGeneralH.200–H.219Transmissionmultipl

4、exingandsynchronizationH.220–H.229SystemsaspectsH.230–H.239CommunicationproceduresH.240–H.259CodingofmovingvideoH.260–H.279RelatedsystemsaspectsH.280–H.299SystemsandterminalequipmentforaudiovisualservicesH.300–H.399SupplementaryservicesformultimediaH.450–H.499Forfurtherd

5、etails,pleaserefertoITU-TListofRecommendations.ITU-TRECOMMENDATIONH.282REMOTEDEVICECONTROLPROTOCOLFORMULTIMEDIAAPPLICATIONSSummaryThisRecommendationdescribesthecoreservicesandprotocolforperformingconfigurationandcontrolofaremotedeviceduringamultimediaconference.Anumberof

6、standarddevicesaredefinedallowinganodetomodelaperipheraldevicesuchasforexampleacamera,microphone,VCRorslideprojector.ThisRecommendationalsoallowsthemodellingofnon-standarddevices.Thismodelispresentedtotheothernodesintheconferencetoallowthesenodestoperformremotecontrol.Th

7、isRecommendationdoesnotspecifytheuseofaparticulartransportprotocol.RecommendationT.136describesitsapplicationusingT.120asthetransportprotocol.RecommendationH.283describesitsapplicationusingtheRDClogicalchanneltransportestablishedusingH.245.FutureRecommendationsmaydescrib

8、eitsapplicationusingotherprotocols.SourceITU-TRecommendationH.282waspreparedbyITU-TStudyGroup16(1997-20