TWCSDVCCMIS212.docx

TWCSDVCCMIS212.docx

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TWCSDVCCMIS212

TimeWarnerCableSwitchedDigitalVideo

ChannelChangeMessageInterfaceSpecification

TWC-SDV-CCMIS-2_12

October12,2005

ISSUED

DocumentStatusSheet

DocumentControlNumber:

TWC-SDV-CCMIS-2_12

DocumentTitle:

SwitchedDigitalVideoChannelChangeMessageInterfaceSpecification

RevisionHistory:

Version0.1,WIP:

February10,2003

Version0.2,WIP:

February13,2003

Version0.3,WIP:

April29,2003

Version0.4,WIP:

May20,2003

Version0.5,Update,April7,2005

Version1.0,IssuedApril8,2005

Version1.1,IssuedMay10,2005

Version1.2,DRAFTJune14,2005

Version1.3,DRAFTJune30,2005

Version1.4,Issued,July12005

Version1.5,Issued,July14,2005

Version2.0,IssuedJuly20,2005

Filenamechange,resetversionto1.0,August9,2005

Version1.0,Re-issuedAugust26,2005

Version1.1,IssuedSeptember30,2005

Version1.11,IssuedOctober4,2005

Version1.12,IssuedOctober4,2005

Version2.12IssuedOctober12,2005

StatusCode:

WorkinProgress

Draft

Issued

Closed

StatusCodeLegend

WorkinProgressindicatesthatthisisanincompletedocumentdesignedtoguidediscussionandgeneratefeedback,whichmayincludeseveralalternativeproposalsforconsideration.

Draftindicatesthatthisdocumentisinproposalformatandconsideredlargelycomplete,butlackingformalreviewbyteammembers.Draftsaresusceptibletosubstantialchangesduringthereviewprocess.

Issuedindicatesthatthisisastabledocument,whichhasundergonerigorousreviewandissuitableforresponse.

Closedindicatesthatthisdocumenthasbeenreviewed,tested,validated,andclosedtofurtherchangerequests.

RevisionsBlock

Sectionor

proposalrequirement

RevisionDescription

Date

All

InitialdraftbyJH

2/13/2003

All

Fixedsometypos,JH

2/13/2003

All

RewrotetouseDSMCCmsgs,CM

4/29/2003

All

AddedServiceGroupIdtoincomingmessagefromclient

5/20/2003

All

AddactiveTimeandtunerID

2/16/2005

4

DescribedOperationofMiniCarousel,GS

4/8/2005

4.1.2.2

ChangedtunerIDtobeacomponentofsessionID,GS

4/8/2005

All

Released,PDB

4/8/2005

5Addendum

AddedCCMISdonatedbyparticipatingvendor

6/1/2005

All

MergedTWC-SACCMISwiththird-partyproposedCCMIS.ReflectedcommentscanvassedduringreviewwithPDBon6/6/2005.NeedfurtherdiscussiononSDBProgramInitIndicationmessage.RK

6/14/2005

4.3

ChangetoreflectthefacttheClientshallsendtheexactSourceIDforeverychannelchange.TheSourceIDisonlysetto0whentheset-topisturnedofforrecordingends.RK

6/17/2005

4.5,4.6,4.9,4.10

IncorporatedcommentsfromTWC.ModifiedSDBProgramSelectIndication（）toincludecurrentsourceIDaswellasnewsourceIDtotuneto.RK

6/30/2005

Various

ChangedallreferencestobroadcastprogramIDtoSourceID;Changednamesofvariousmessagestoeliminateunnecessaryinclusionoftheword“program.”-PDB

7/1/2005

4.9,4.9.1

AddedbarkerMessageID0x0000andfixedthetagandlenfieldsofthegenericSDBEventIndicationtobe1byteeach.-RK

7/14/2005

4.9,4.11

AddedsourceIdtoSDBEventIndicationmessagetoallowClienttoproperlyhandleevents.HighlightedthefactthattheClientneednotreinitializewiththesecondarySDVServeruponfailureoforprotectionswitchtotheprimary.-RK

7/18/2005

All

BaselineReleaseforclientdevelopment

7/20/2005

Nameonly

ChangedfilenamefromTWCSDBMCPtoTWCSDVMCMIS.ResetVersionto1.0

8/9/2005

Various

ChangedallfulltextreferencesfromSwitchedDigitalBroadcasttoSwitchedDigitalVideo;changedassociatedacronymreferencesfromSDBtoSDV.ChangedreferencesfromMiniCarouselProtocoltoMiniCarouselMessageInterfaceSpecification;changedassociatedacronymsfromMCPtoMCMIS.Thesechangesareforclarificationofintenttoexternalentities,andnomodificationofscopeormeaningisintended.Notethatforcontinuity,theactualmessagenamesandreferencesretaintheformerusage.Originallyissuedas1.1,nowre-numberedto1.0becausetheversion1.1changes（nextentry）werenotincluded.

8/26/2005

4.1.2.1,4.6,4.9

Removedthefollowingstatementwhichisnolongervalidfromsection4.1.2.1:

“Avalueof0indicatesachanneloutsideoftheSwitchedDigitalVideo.”

Substitutedthefollowingstatement:

“Avalueof0indicatesaninvalidsourceID.”

Forexample,iftheSDVServersendsanSDBSelectIndicationmessagetotheclientindicatingProgNotAvailable,thevalueofthesourceIDwouldbezerointhiscase. Likewise,whentheServersendstheSDBQueryRequestmessagetotheclient,buttheclientiscurrentlyonanon-videochannelforwhichthereisnosourceID,theclientwouldneedtoreportavalueofzeroforthesourceIDintheresponse.

_____________________________________

Insection10.2.1oftheDSM-CCspecification,theSDVPrivateDataisdefinedtoalwaysstartwithprivateDataLength（2bytes）.IntheCCMISspecification（2.0）:

Insection4.6SDBProgramSelectResponse,thePrivateDatastructurewasempty.Ithasnowbeensettoa2-byteprivateDataLengthfieldwithvalue0.Likewise,insection4.9SDBEventIndication,thefirstfieldofthePrivateDatawassourceId（4bytes）.TheprivateDataLengthhasbeenplacedbeforethesourceIdforconsistencywiththeDSM-CCspecification.

9/30/2005

4.1.2.2

Addedclarificationtosection4.1.2.2abouttheformatofthesessionIDfieldofCCMISmessages.–RK

_____________________________________

Correctedversionnumberingofinitial1.1release,-PDB

10/4/2005

4.3,4.5

HarmonizedformatofsessionIDinsection4.3andthatofsection4.1.2.2.ItisimportanttoformatthesessionIDasdescribedinsection4.1.1.2and4.3toensurecompatibilitybetweenSDVClientandServer.

____________________________________

UpdatedprivateDataLengthfieldto0x0Einsection4.5.-RK

10/4/2005

NameOnly

Duetosimultaneousupdateissue,filenameandreferenceswereinadvertentlyresetbacktoSDB.Thisreleasecorrectsthisissue,andchangesversionnumberfrom1.12to2.12.Otherwise,theseversionsaretechnicallyidentical.

10/12/2005

Contents

TimeWarnerCableSwitchedDigitalVideoi

ChannelChangeMessageInterfaceSpecificationi

1USINGTHISDOCUMENT8

1.1AddingContent8

1.2CommentingorResponding8

1.3ChangesandRevisions8

2INTRODUCTION9

2.1PurposeOfDocument9

2.2ScopeOfDocument9

2.3Audience9

2.4DocumentConventions9

2.5References9

3NetworkConnection10

4MessageSpecifications11

4.1DSMCCStandardMessageandStandardFields11

4.1.1.Header11

4.1.1.1.MessageID12

4.1.2.StandardFields13

4.1.2.1.SourceId13

4.1.2.2.SessionId13

4.1.2.3.ReasonandResponse13

4.2MessageFlow14

4.3SDBProgramSelectRequest15

4.4SDBProgramSelectConfirm17

4.5SDBProgramSelectIndication21

4.6SDBProgramSelectResponse23

4.7SDBQueryRequest26

4.8SDBQueryConfirm26

4.9SDBEventIndication28

4.9.1.BarkerMessageDescriptor29

4.9.2.TunerUseChangedDescriptor30

4.10SDBEventResponse31

4.11SDBInitRequest31

4.12SDBInitConfirm34

4.13SDBUserActivityReport35

1USINGTHISDOCUMENT

ThisdocumentisintendedtobeaworkingdocumentinwhichreviewersmakecommentsviaE-mail,additionalsourcedocuments,orVisio/rose/etc.diagrams.

Pleaseaddcommentsandcontentaccordingtothefollowingdirections:

1.1AddingContent

YoucanaddcontenttothisdocumentbysendingPaulBrooksE-mail（Paul.Brooks@TWC）,worddocuments,orcopiesofthisdocumentwithcommentsintheareasofconcern.PaulwillreviewthecommentsattempttoaddthechangesASAPandmaketheupdatesavailableonatimelybasis.

1.2CommentingorResponding

ThisdocumentcanbeusedinsomeinstancesasacommunicationmediumbetweenTimeWarnerCableteammembersanddevelopmentpartners.Commentsandresponsescanbeincludedinthetext.Comments/responsesshouldconcernunresolvedissuesortheyshouldcontainalternativeproposalsfordiscussion.Pleasebegineachcommentandresponse（paragraph）withyourinitials（e.g.,PB）.

1.3ChangesandRevisions

ChangesarelistedintheRevisionsBlock,locatedbeforetheTableofContents.Documentnumberwillbeincrementeduponrelease.Changessincelastissuewillbeindicatedbychangebarsonleft.

2

INTRODUCTION

2.1PurposeOfDocument

ThepurposeofthisdocumentistospecifytheSwitchedDigitalVideoChannelChangeMessageInterfaceSpecification.ThisinterfaceoperatesbetweentheSwitchedDigitalVideo（SDV）ServerandtheSDVClientrunningonasettopbox.ThisinterfaceprovidesamechanismforchangingchannelsintheSwitchedDigitalVideoService.

2.2ScopeOfDocument

ThisscopeofspecificationislimitedtothechannelchangeoperationperformedinaSwitchedDigitalVideosystem.

2.3Audience

Thefollowinggroupsaretheprimaryaudiencesforthisdocument:

vVendorssupplyingcomponentsoftheSwitchedDigitalVideoSystem

vImplementersoftheSwitchedDigitalVideoServerandclient

vEngineerstestingtheSwitchedDigitalVideoSystem

2.4DocumentConventions

Thisspecificationusesthefollowingconventionstoalertyoutospecificinformation:

Note:

　Thiscontainsimportantinformationaboutthetopicitisassociatedwith.

SeeAlso:

　Thisisacrossreferencetorelatedinformation.

2.5References

1.ISO/IEC13818-6MPEG-2DigitalStorageMediaCommandandControl（DSM-CC）

3

NetworkConnection

TheSDVCCMISisaclient-serverbased,connectionless,messagingprotocolintendedforchannelchangeoperationsinaSwitchedDigitalVideosystem.TheserverisimplementedinaSDVServer.Theclientisimplementedinasettopbox（STB）.

TheCCMISiscarriedoverUDP/IP,whichisconnectionlessand