SIST EN 300 443-1 V2.0.1:2004

• Abstract:

  Extension to support addressing and identification of subscribers using ATM End System Address (AESA) addressing format

• Status: Published
• Publication Date: 31-Mar-2004
• ICS: 33.080 - Integrated Services Digital Network (ISDN)
• Technical Committee: SPN - Services and Protocols for Networks
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Apr-2004
• Due Date: 01-Apr-2004
• Completion Date: 01-Apr-2004
• Ref Project: ETSI EN 300 443-1 V2.0.1 (2001-03) - Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. two (DSS2) protocol; B-ISDN user-network interface layer 3 specification for basic call/bearer control; Part 1: Protocol specification [ITU-T Recommendation Q.2931 (1995), modified]

SIST EN 300 443-1 V2.0.1:2004 is the Slovenian adoption of ETSI EN 300 443-1 Version 2.0.1, based on ITU-T Recommendation Q.2931 (1995) with modifications. It specifies the DSS2 layer 3 protocol for B-ISDN basic call/bearer control at the TB reference point, including the extension for subscriber addressing and identification using ATM End System Address (AESA) addressing format. It is written for equipment and implementers that support connection-oriented basic B-ISDN telecommunication services.

What does SIST EN 300 443-1 V2.0.1:2004 specify?

SIST EN 300 443-1 V2.0.1:2004 specifies stage three signalling for on-demand connection-oriented release 1 basic telecommunication services in pan-European B-ISDN. It covers the protocol procedures and switching functions needed at the TB reference point, and also the protocol requirements when the service is provided to the user via a private B-ISDN.

The document applies to equipment on either side of a TB reference point, or a coincident SB and TB reference point, when used as access to the public B-ISDN. It also addresses 64 kbit/s based circuit-mode ISDN services in B-ISDN and access interworking between B-ISDN and N-ISDN.

The structure is a multi-part deliverable:

• Part 1 - Protocol specification
• Part 2 - Protocol Implementation Conformance Statement (PICS) proformas
• Part 3 - Test Suite Structure and Test Purposes (TSS&TP) for the user
• Part 4 - Abstract Test Suite (ATS) and partial PIXIT proformas for the user
• Part 5 - TSS&TP for the network
• Part 6 - ATS and partial PIXIT proformas for the network

What are the key requirements of SIST EN 300 443-1 V2.0.1:2004?

SIST EN 300 443-1 V2.0.1:2004 mainly defines how DSS2 basic call/bearer control is encoded and exchanged, and how several information elements and procedures behave. In practice, this is the part that implementers use to build interoperable call setup, release, and addressing behavior.

Signalling procedures and service scope

Clause 1 ties the protocol to stage three basic telecommunication services and to equipment using the TB reference point. This matters because it tells implementers where the protocol applies and where conformance testing begins.

Addressing and numbering

The document extends the protocol for subscriber addressing and identification using AESA addressing format. Clause 4.5.13 and related table entries also reserve a code point in the addressing/numbering plan, and the notes state that NSAP address octets are not supported. For implementers, this affects how addresses are encoded and which numbering values are acceptable.

SETUP and Broadband sending complete

Clause 5.2.1 requires the Broadband sending complete information element in the SETUP message when en bloc sending procedures are used, and the receiving side follows the en bloc receiving procedure. This matters because it controls when the network and user treat address digits as complete.

Information element encoding limits

Several clause notes tighten information element lengths, including maximum lengths of 25 octets and 26 octets for specific elements. Clause 4.5.9 also states that octet groups 5, 6 and 7 of the Broadband low layer information element are not position independent and, if present, shall be sent in the specified order. This is important for message encoding and parser design.

Broadband bearer capability and OAM

Clause 4.5.6 adds guidance for declaring end-to-end OAM F5 flows in the OAM traffic descriptor information element so the network can identify actual user-plane information rates. In practice, this supports policing and shaping decisions for user-plane and OAM traffic.

Timers and option handling

Table 7-3 states that user-side timer T301 is optional. That helps implementers decide what timer support is mandatory and what can be implementation-dependent.

What terms does SIST EN 300 443-1 V2.0.1:2004 define?

B-ISDN is Broadband Integrated Services Digital Network, the broadband network environment covered by the standard.

DSS2 is Digital Subscriber Signalling System No. two, the signalling system used for the B-ISDN user-network interface layer 3 procedures.

AESA means ATM End System Address, the addressing format used for subscriber addressing and identification.

TB reference point is the interface point where the protocol applies between the user side and the B-ISDN.

Broadband sending complete information element is the signal used with en bloc procedures to indicate that sending is complete.

OAM F5 flow is the end-to-end user-originated flow referenced for traffic descriptor handling and network identification of user-plane rates.

Who uses SIST EN 300 443-1 V2.0.1:2004?

SIST EN 300 443-1 V2.0.1:2004 is used by telecom equipment designers, switch and access-network vendors, and operators of B-ISDN or private B-ISDN systems. Test laboratories and conformance teams use it with the related PICS, TSS&TP, ATS, and PIXIT parts to check interoperability and protocol behavior. Buyers and quality managers use it to confirm that equipment supports the required DSS2 basic call/bearer control functions.

What changed in SIST EN 300 443-1 V2.0.1:2004 from the previous edition?

SIST EN 300 443-1 V2.0.1:2004 incorporates amendments 1, 2, 3 and 4 to ITU-T Recommendation Q.2931 into the ETSI endorsement. The change notice highlights updates to broadband bearer capability handling, several information elements, call control procedures, annexes C, E, F, J and K, and the addition of new annexes M and N. It also notes deleted annexes G and H and deleted appendix III.

Which standards are used with SIST EN 300 443-1 V2.0.1:2004?

• ITU-T Recommendation I.130 - service characterization and ISDN network capability terminology.
• ETS 300 402-2 - DSS1 data link layer, modified Q.921.
• EN 300 403-1 - DSS1 signalling network layer for circuit-mode basic call control, modified Q.931.
• ETS 300 436-1 - SSCOP for the B-ISDN signalling ATM adaptation layer.
• ETS 300 437-1 - SSCF at UNI for signalling support.
• ETS 300 486-1 - B-ISDN meta-signalling protocol.
• EN 301 068-1 - connection characteristics, ATM transfer capability and traffic parameter indication.
• EN 301 815-1 - quality of service class and parameters indication at call/connection establishment.

What does the SIST EN 300 443-1 V2.0.1:2004 document contain?

The document contains protocol text, message and information-element rules, and the procedures needed to set up and control basic B-ISDN calls and bearers. It includes tables that define encodings, code points, lengths, and timer behavior, together with figures that show ordering and message structure. It also contains annexes and appendices for normative and informative material, including conformance-related and test-related content used in implementation and validation work.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.MHQR@Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. two (DSS2) protocol; B-ISDN user-network interface layer 3 specification for basic call/bearer control; Part 1: Protocol specification [ITU-T Recommendation Q.2931 (1995), modified]33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)ICS:Ta slovenski standard je istoveten z:EN 300 443-1 Version 2.0.1SIST EN 300 443-1 V2.0.1:2004en01-april-2004SIST EN 300 443-1 V2.0.1:2004SLOVENSKI
STANDARD
ETSIEN300443-1V2.0.1(2001-03)EuropeanStandard(Telecommunicationsseries)BroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;B-ISDNuser-networkinterfacelayer3specificationforbasiccall/bearercontrol;Part1:Protocolspecification[ITU-TRecommendationQ.2931(1995),modified]SIST EN 300 443-1 V2.0.1:2004

ETSIETSIEN300443-1V2.0.1(2001-03)2ReferenceREN/SPAN-05143-1Keywordsbasic,B-ISDN,broadband,DSS2,endorsement,ISDN,layer3,protocol,UNIETSI650RoutedesLuciolesF-06921SophiaAntipolisCedex-FRANCETel.:[phone]Fax:[phone]SiretN°34862356200017-NAF742CAssociationàbutnonlucratifenregistréeàlaSous-PréfecturedeGrasse(06)N°7803/88ImportantnoticeIndividualcopiesofthepresentdocumentcanbedownloadedfrom:http://www.etsi.orgThepresentdocumentmaybemadeavailableinmorethanoneelectronicversionorinprint.Inanycaseofexistingorperceiveddifferenceincontentsbetweensuchversions,thereferenceversionisthePortableDocumentFormat(PDF).Incaseofdispute,thereferenceshallbetheprintingonETSIprintersofthePDFversionkeptonaspecificnetworkdrivewithinETSISecretariat.Usersofthepresentdocumentshouldbeawarethatthedocumentmaybesubjecttorevisionorchangeofstatus.InformationonthecurrentstatusofthisandotherETSIdocumentsisavailableathttp://www.etsi.org/tb/status/Ifyoufinderrorsinthepresentdocument,sendyourcommentto:[e-mail]opartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute2001.Allrightsreserved.SIST EN 300 443-1 V2.0.1:2004

ETSIETSIEN300443-1V2.0.1(2001-03)3IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.TheinformationpertainingtotheseessentialIPRs,ifany,ispubliclyavailableforETSImembersandnon-members,andcanbefoundinETSISR000314:"IntellectualPropertyRights(IPRs);Essential,orpotentiallyEssential,IPRsnotifiedtoETSIinrespectofETSIstandards",whichisavailablefromtheETSISecretariat.LatestupdatesareavailableontheETSIWebserver(http://www.etsi.org/ipr).PursuanttotheETSIIPRPolicy,noinvestigation,includingIPRsearches,hasbeencarriedoutbyETSI.NoguaranteecanbegivenastotheexistenceofotherIPRsnotreferencedinETSISR000314(ortheupdatesontheETSIWebserver)whichare,ormaybe,ormaybecome,essentialtothepresentdocument.ForewordThisEuropeanStandard(Telecommunicationsseries)hasbeenproducedbyETSITechnicalCommitteeServicesandProtocolsforAdvancedNetworks(SPAN).Thepresentdocumentispart1ofamulti-partdeliverablecoveringthespecificationoftheBroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;B-ISDNuser-networkinterfacelayer3specificationforbasiccall/bearercontrol,asdescribedbelow:Part1:"Protocolspecification[ITU-TRecommendationQ.2931(1995),modified]";Part2:ProtocolImplementationConformanceStatement(PICS)proformaspecification";Part3:"TestSuiteStructureandTestPurposes(TSS&TP)specificationfortheuser";Part4:"AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecificationfortheuser";Part5:"TestSuiteStructureandTestPurpose(TSS&TP)specificationforthenetwork";Part6:"AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecificationforthenetwork".NationaltranspositiondatesDateofadoptionofthisEN:23February2001DateoflatestannouncementofthisEN(doa):31May2001DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):30November2001DateofwithdrawalofanyconflictingNationalStandard(dow):30November2001EndorsementnoticeTheelementsofITU-TRecommendationQ.2931(1995)anditsamendments1[91],2[92],3[93]and4[94]apply,withthefollowingmodifications:NOTE:Newormodifiedtextisindicatedusingsidebars.Inaddition,underliningand/orstrikeoutareusedtohighlightdetailedmodificationswherenecessary.SIST EN 300 443-1 V2.0.1:2004

ETSIETSIEN300443-1V2.0.1(2001-03)4Clause1Replaceclause1(excludingclauses1.1to1.3)by:1ScopeThepresentdocumentspecifiesthestagethreeofon-demandconnection-orientedrelease1basictelecommunicationservicesforthepan-EuropeanBroadbandIntegratedServicesDigitalNetwork(B-ISDN)asprovidedattheTBreferencepointorcoincidentSBandTBreferencepoint(asdefinedinITU-TRecommendationI.413)bymeansoftheDigitalSubscriberSignallingSystemNo.two(DSS2)protocol.Stagethreeidentifiestheprotocolproceduresandswitchingfunctionsneededtosupportatelecommunicationsservice(seeITU-TRecommendationI.130[84]).Inaddition,thepresentdocumentspecifiestheprotocolrequirementsattheTBreferencepointwheretheserviceisprovidedtotheuserviaaprivateB-ISDN.NOTE1:ProceduresattheTBreferencepoint,tosupporttheaccessofaprivateB-ISDNtothepublicB-ISDN,arenotexplicitlyidentifiedinthepresentdocument,however,someproceduresareapplicableonlyattheTBreferencepoint.Thepresentdocumentalsospecifiestheparticularfeaturesrequiredtoprovide64kbit/sbasedcircuit-modeISDNservicesinB-ISDNandtosupportaccessinterworkingbetweenB-ISDNandN-ISDN.Abasictelecommunicationsserviceisafundamentaltypeofservice.Itformsthebasisonwhichsupplementaryservicesmaybeadded.NOTE2:SpecificrequirementsofindividualB-ISDNconnection-orientedbasictelecommunicationservicesarenotcoveredbythepresentdocument.Furtherpartsofthepresentdocumentprovidethemethodoftestinganddetailedapplicationspecificrequirementstodetermineconformancetothepresentdocument.Thepresentdocumentisapplicabletoequipmentsupportingconnection-orientedbasicB-ISDNtelecommunicationservices,tobeattachedateithersideofaTBreferencepointorcoincidentSBandTBreferencepointswhenusedasanaccesstothepublicB-ISDN.Clause1.1Replacethetextofclause1.1by:2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.NOTE:Referencenumberslessthan[84]appearintheendorsedITU-Trecommendation.[84]ITU-TRecommendationI.130(1988):"MethodforthecharacterizationoftelecommunicationservicessupportedbyanISDNandnetworkcapabilitiesofanISDN".[85]ETSIETS300402-2:"IntegratedServicesDigitalNetwork(ISDN);DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Datalinklayer;Part2:Generalprotocolspecification[ITU-TRecommendationQ.921(1993),modified]".SIST EN 300 443-1 V2.0.1:2004

ETSIETSIEN300443-1V2.0.1(2001-03)5[86]ETSIEN300403-1:"IntegratedServicesDigitalNetwork(ISDN);DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Signallingnetworklayerforcircuit-modebasiccallcontrol;Part1:Protocolspecification[ITU-TRecommendationQ.931(1993),modified]".[87]ETSIETS300436-1:"BroadbandIntegratedServicesDigitalNetwork(B-ISDN);SignallingATMAdaptationLayer(SAAL);ServiceSpecificConnectionOrientedProtocol(SSCOP);Part1:Protocolspecification[ITU-TRecommendationQ.2110(1995),modified]".[88]ETSIETS300437-1:"BroadbandIntegratedServicesDigitalNetwork(B-ISDN);SignallingATMAdaptationLayer(SAAL);ServiceSpecificCo-ordinationFunction(SSCF)forsupportofsignallingattheUser-NetworkInterface(UNI);Part1:SpecificationofSSCFatUNI[ITU-TRecommendationQ.2130(1995),modified]".[89]ETSIETS300486-1:"BroadbandIntegratedServicesDigitalNetwork(B-ISDN);Meta-signallingprotocol;Part1:Protocolspecification[ITU-TRecommendationQ.2120(1995),modified]".[90]ETSIEN301068-1:"BroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;Connectioncharacteristics;ATMtransfercapabilityandtrafficparameterindication;Part1:Protocolspecification[ITU-TRecommendationsQ.2961.1(1995),Q.2961.2(1997),Q.2961.3(1997),Q.2961.4(1997),modified]".[91]Amendment1toITU-TRecommendationQ.2931(1997):"DigitalSubscriberSignallingSystemNo.2-User-networkinterface(UNI)layer3specificationforbasiccall/connectioncontrol-Amendment1"[92]Amendment2Corrigendum1(2000)toITU-TRecommendationQ.2931:"DigitalSubscriberSignallingSystemNo.2-User-networkinterface(UNI)layer3specificationforbasiccall/connectioncontrol".[93]Amendment3toITU-TRecommendationQ.2931(1999):"User-networkinterface(UNI)layer3specificationforbasiccall/connectioncontrol".[94]Amendment4(1999)toITU-TRecommendationQ.2931:"DigitalSubscriberSignallingSystemNo.2-User-networkinterface(UNI)layer3specificationforbasiccall/connectioncontrol"[95]ETSIEN301815-1(V1.1.1):"BroadbandIntegratedServicesDigitalNetwork(B-ISDN);DigitalSubscriberSignallingSystemNo.two(DSS2)protocol;QualityofServiceClassandParametersindicationatcall/connectionestablishment;Part1:Protocolspecification[ITU-TRecommendationsQ.2965.1(1999)andQ.2965.2(1999),modified]".SIST EN 300 443-1 V2.0.1:2004

ETSIETSIEN300443-1V2.0.1(2001-03)6ThroughoutthetextofITU-TRecommendationQ.2931anditsamendments1,2,3and4:Replacereferencesasshowninthefollowingtable.ReferenceinITU-TRecommendationQ.2931ModifiedreferenceITU-TRecommendationQ.921ITU-TRecommendationQ.921asmodifiedbyETS300402-2[85]ITU-TRecommendationQ.931ITU-TRecommendationQ.931asmodifiedbyEN300403-1[86]ITU-TRecommendationQ.2110ITU-TRecommendationQ.2110asmodifiedbyETS300436-1[87]ITU-TRecommendationQ.2120ITU-TRecommendationQ.2120asmodifiedbyETS300486-1[89]ITU-TRecommendationQ.2130ITU-TRecommendationQ.2130asmodifiedbyETS300437-1[88]ITU-TRecommendationQ.2961.2ITU-TRecommendationQ.2961.2asmodifiedbyEN301068-1[90]ITU-TRecommendationsQ.2965.1andQ.2965.2ITU-TRecommendationsQ.2965.1andQ.2965.2asmodifiedbyEN301815-1[95]3DefinitionsandabbreviationsDefinitionsandabbreviationsareprovidedinclausesJ.1andJ.2,respectively.Table3-8/Q.2931,note5Addthefollowingtexttonote5:Themaximumlengthofthisinformationelementis25octets.Table3-8/Q.2931,note7Addthefollowingtexttonote7:Notincludedinthenetwork-to-userdirectionforbasiccallcontrol,butmaybeincludedforsomesupplementaryservices.Themaximumlengthofthisinformationelementis26octets.Table3-8/Q.2931,note8Addthefollowingtexttonote8:Notincludedinthenetwork-to-userdirectionforbasiccallcontrol,butmaybeincludedforsomesupplementaryservices.Table3-8/Q.2931,note13Replacenote13by:NOTE13:ItismandatoryfortheusertoincludetheBroadbandsendingcompleteinformationelementwhenenblocsendingproceduresareused.Onitsreceipt,thenetworkshallapplytheenblocsendingprocedure.ItismandatoryforthenetworktoincludetheBroadbandsendingcompleteinformationelement.IftheBroadbandsendingcompleteinformationelementisnotincluded,thecalledusershallnotapplythemissingmandatoryelementerrorhandlingprocedures.Table3-19/Q.2931,note2Addthefollowingtexttonote2:Themaximumlengthofthisinformationelementis25octets.SIST EN 300 443-1 V2.0.1:2004

ETSIETSIEN300443-1V2.0.1(2001-03)7Table3-19/Q.2931,note4Addthefollowingtexttonote4:Notincludedinthenetwork-to-userdirectionforbasiccallcontrol,butmaybeincludedforsomesupplementaryservices.Themaximumlengthofthisinformationelementis26octets.Table3-19/Q.2931,note5Addthefollowingtexttonote5:Notincludedinthenetwork-to-userdirectionforbasiccallcontrol,butmaybeincludedforsomesupplementaryservices.Clause4.5.6,secondparagraphInsertthefollowingnoteafterthesecondparagraph:NOTE:Whentheuserrequirestheuseofend-to-endOAMF5flows,itisrecommendedthatthisisdeclaredexplicitlywithintheOAMtrafficdescriptorinformationelement(seeclause4.5.24)inordertoenablethenetworktoidentifytheactualuserplaneinformationrates.Currentlythisisneededwhentheuserexpectstheseparatepolicingandshapingfunctions(whenappliedasanetworkoption)oftheuserplaneinformationflowandoftheend-to-enduseroriginatedOAMF5flowtobeperformedbythenetwork.Othercasesmaybeidentifiedinthefuture.Clause4.5.9,thirdparagraph:Insertafterthethirdparagraph:Octetgroups5(layer1id),6(layer2id)and7(layer3id)oftheBroadbandlowlayerinf
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