SIST EN 300 659-1 V1.3.1:2003

• Abstract:

  Definition of the protocol for on hook data transmission on analogue lines required to support display services such as Calling Line Identification Presentation for the PSTN.

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.040.35 - Telephone networks
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: ETSI EN 300 659-1 V1.3.1 (2001-01) - Access and Terminals (AT); Analogue access to the Public Switched Telephone Network (PSTN); Subscriber line protocol over the local loop for display (and related) services; Part 1: On-hook data transmission

SIST EN 300 659-1 V1.3.1:2003 is the Slovenian adoption of ETSI EN 300 659-1 for analogue access to the Public Switched Telephone Network (PSTN). It specifies the subscriber line protocol over the local loop for display and related services in the on-hook state, for use between the Local Exchange (LE) and Terminal Equipment (TE).

What does SIST EN 300 659-1 V1.3.1:2003 specify?

SIST EN 300 659-1 V1.3.1:2003 specifies how display-service data is sent over analogue subscriber lines when the TE is on-hook. The core method is asynchronous voice-band Frequency-Shift Keying (FSK), with a one-way transmission path from the LE to the TE.

The document is organized into clauses on scope, references, definitions and abbreviations, data encoding, protocol requirements, and transmission signalling, timing and tolerance. It also includes normative annexes for special cases and informative annexes for reference setups and the data format.

Annex	What it covers
Annex A	TE connected to the LE via a pair gain system, with considerations for the Z' interface
Annex B	DTMF-based subscriber line protocol for continued use in networks that already implement it
Annex C	Reference configurations: direct TE-to-LE connection, pair gain system, and Access Network case
Annex D	Data transmission format overview

The scope also places transmission path establishment outside the document and assigns that responsibility to the network operator.

What are the key requirements of SIST EN 300 659-1 V1.3.1:2003?

Data encoding and message structure

SIST EN 300 659-1 V1.3.1:2003 uses the data encoding defined in EN 300 659-3. The Presentation layer carries a message made of parameters, each with a type, length and data field. In practice, this means the LE sends structured display data, not raw digits alone.

The Data Link layer adds a Channel Seizure Signal, a Mark Signal, message type and length fields, and a checksum. The checksum supports basic error detection, so the TE can reject corrupted messages.

Physical layer and signalling

SIST EN 300 659-1 V1.3.1:2003 uses simplex asynchronous voice-band FSK on the network side of interface Z. The LE needs a frequency modulator and the TE a demodulator, with characteristics aligned to V.23 for the forward channel. The document also sets signal level, signal purity and source-impedance expectations for the interface.

The data signal is continuous only while the message is being sent. The LE stops FSK modulation immediately after the last bit of the Data Link message, which matters because the TE must be able to detect the end of transmission cleanly.

Timing for ringing-related and non-ringing transmission

SIST EN 300 659-1 V1.3.1:2003 defines two service modes: transmission associated with ringing and transmission not associated with ringing. In both cases, a TAS is used to tell the TE that data will follow.

For ringing-related transmission, the document defines two methods: data during ringing and data prior to ringing. For non-ringing transmission, the same TAS options apply, but the call handling sequence is different. The practical effect is that the network operator must choose a transmission method that matches the service and the terminal behaviour.

The TAS may be a DT-AS, an RP-AS, or a line reversal followed by DT-AS. Annex A adjusts the timing for pair gain systems, because extra signalling delay can affect when the TE receives the alerting signal.

DTMF-based continued use

Annex B keeps a DTMF-based subscriber line protocol available for networks that already use it. It describes line seizure, alerting, and information transfer using DTMF codes for calling number, redirecting number and information values.

For suppliers and operators, Annex B is mainly a compatibility annex. It supports legacy deployment, while the main body of the standard uses FSK.

What terms does SIST EN 300 659-1 V1.3.1:2003 define?

• Calling line identity - The calling number or identity information sent to the TE for display, as defined by the CLIP service description.
• Loop state - The state in which the TE is off-hook and the local loop is seized.
• Quiescent state - The idle state of the line when no signalling activity is taking place.
• Mark bit - A binary symbol “1” used in the V.23-based signalling format.
• Space bit - A binary symbol “0” used in the V.23-based signalling format.
• Ring pattern - One or more ringing pulses separated by short silent periods.
• Ringing Pulse Alerting Signal (RP-AS) - A ringing-current pulse used to alert the TE that data transmission will follow.
• Frequency-Shift Keying (FSK) - The voice-band signalling method used to carry the subscriber line data.

Who uses SIST EN 300 659-1 V1.3.1:2003?

SIST EN 300 659-1 V1.3.1:2003 is used by PSTN network operators, access network designers, and manufacturers of analogue TE that supports display services such as CLIP. It is also relevant to interoperability and compliance labs that verify timing, signalling and data-format behaviour on analogue subscriber lines. Quality managers and buyers use it to check that a device or network service matches the intended PSTN display-service protocol.

What changed in SIST EN 300 659-1 V1.3.1:2003 from the previous edition?

SIST EN 300 659-1 V1.3.1:2003 is the January 2001 publication of version 1.3.1 and replaces version 1.2.1. The foreword states that version 1.2.1 had been submitted to the One-step Approval Procedure and was withdrawn after substantial technical comments.

Which standards are used with SIST EN 300 659-1 V1.3.1:2003?

• ETS 300 648 - Provides the CLIP service description used for calling line identity.
• TR 101 182 - Provides definitions and the reference impedance ZR used in the interface description.
• ES 201 235 - Defines the DTMF transmitters and receivers used in Annex B.
• ITU-T Recommendation Q.11 - Supports numbering-plan terminology in the definitions.
• ITU-T Recommendation T.50 - Defines the International Reference Alphabet used for character coding.
• ITU-T Recommendation V.23 - Provides the voice-band modem characteristics for the FSK channel.
• EN 300 659-3 - Defines the data encoding used by this part.
• Part 2 and Part 3 of EN 300 659 - The foreword identifies the multi-part structure: on-hook transmission, off-hook transmission, and data-link message and parameter codings.

What does the SIST EN 300 659-1 V1.3.1:2003 document contain?

The document contains message-format figures for the Presentation and Data Link layers, plus an overview figure of the overall data transmission format. It also contains timing figures and tables for ringing-related and non-ringing transmission cases, including the DT-AS, RP-AS and line-reversal options. Annex B includes example DTMF message sequences and states that conformance is by supplier's declaration. Annex C gives three reference configurations, and Annex D summarizes the packet structure from channel seizure through checksum.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.LAccess and Terminals (AT); Analogue access to the Public Switched Telephone Network (PSTN); Subscriber line protocol over the local loop for display (and related) services; Part 1: On-hook data transmission33.040.35Telefonska omrežjaTelephone networksICS:Ta slovenski standard je istoveten z:EN 300 659-1 Version 1.3.1SIST EN 300 659-1 V1.3.1:2003en01-december-2003SIST EN 300 659-1 V1.3.1:2003SLOVENSKI
STANDARD
ETSIEN300659-1V1.3.1(2001-01)EuropeanStandard(Telecommunicationsseries)AccessandTerminals(AT);AnalogueaccesstothePublicSwitchedTelephoneNetwork(PSTN);Subscriberlineprotocoloverthelocalloopfordisplay(andrelated)services;Part1:On-hookdatatransmissionSIST EN 300 659-1 V1.3.1:2003

ETSIETSIEN300659-1V1.3.1(2001-01)2ReferenceREN/AT-030006-1Keywordsdata,PSTN,protocol,serviceETSI650RoutedesLuciolesF-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 300 659-1 V1.3.1:2003

ETSIETSIEN300659-1V1.3.1(2001-01)3ContentsIntellectualPropertyRights.4Foreword.51Scope.62References.63Definitionsandabbreviations.73.1Definitions.73.2Abbreviations.74Dataencoding.75Protocolrequirements.85.1Presentationlayer.85.2DataLinklayer.85.3Physicallayer.96Datatransmissionrequirements:signalling,timingandtolerance.96.1Datatransmissionassociatedwithringing.106.1.1Datatransmissionduringringing.106.1.2Datatransmissionpriortoringing.116.2Datatransmissionnotassociatedwithringing.126.3TASphysicalcharacteristics.146.3.1DT-AS.146.3.2RP-AS.14AnnexA(normative):TEconnectedtotheLEviaapairgainsystem-considerationsfortheZ'interface.15AnnexB(normative):DTMFbasedsubscriberlineprotocol.16B.1Introduction.16B.2Lineseizurephase.16B.3Alertingphase.16B.4Informationtransferphase.16B.5Tests.17AnnexC(informative):Referenceconfigurations.18AnnexD(informative):Datatransmissionformat.19Bibliography.20History.21SIST EN 300 659-1 V1.3.1:2003

ETSIETSIEN300659-1V1.3.1(2001-01)4IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.TheinformationpertainingtotheseessentialIPRs,ifany,ispubliclyavailableforETSImembersandnon-members,andcanbefoundinETSISR000314:"IntellectualPropertyRights(IPRs);Essential,orpotentiallyEssential,IPRsnotifiedtoETSIinrespectofETSIstandards",whichisavailablefromtheETSISecretariat.LatestupdatesareavailableontheETSIWebserver(http://www.etsi.org/ipr).TheattentionofETSIhasbeendrawntotheIntellectualPropertyRights(IPRs)listedbelowwhichare,ormaybe,ormaybecome,Essentialtothepresentdocumentand,inparticular,on-hookdatatransmissionassociatedwithringing,networkoperatoroption:"transmissionduringringing".TheIPRownerhasundertakentograntirrevocablelicences,onfair,reasonableandnon-discriminatorytermsandconditionsundertheseIPRspursuanttotheETSIinterimIPRPolicy.FurtherdetailspertainingtotheseIPRscanbeobtaineddirectlyfromtheIPRowner.ThepresentIPRinformationhasbeensubmittedtoETSIandpursuanttotheETSIIPRPolicy,noinvestigation,includingIPRsearches,hasbeencarriedoutbyETSI.NoguaranteecanbegivenastotheexistenceofotherIPRsnotreferencedinSR000314(ortheupdatesontheETSIWebserver)whichare,ormaybe,ormaybecome,essentialtothepresentdocument.IPRs:USA4,582,956Canada1,225,726Belgium0,150,181France0,150,181UnitedKingdom0,150,181Japan1,832,616Netherlands0,150,181Sweden0,150,181Germany3,376,377TherelatedInternationalPatentApplication(WHO85/00488)designatedthefollowingcountries:AT,AU,BE,BR,CH,DE,DK,FI,FR,GB,JP,LU,NL,NO,SEandSU.IPRowner:AT&T:10IndependenceBlvd.Warren,NJ07059-6799USAContact:Mr.RichDeFeliceTel:[phone]Fax:[phone]SIST EN 300 659-1 V1.3.1:2003

ETSIETSIEN300659-1V1.3.1(2001-01)5ForewordThisEuropeanStandard(Telecommunicationsseries)hasbeenproducedbyETSITechnicalCommitteeAccessandTerminals(AT).Version1.2.1ofthepresentdocumenthadbeensubmittedtoOne-stepApprovalProcedure200017butwaswithdrawnduetothereceiptofsubstantialtechnicalcomments.Thepresentdocumentispart1ofamulti-partstandardcoveringthePSTNsubscriberlineprotocoloverthelocalloopfordisplay(andrelated)services,asdescribedbelow:Part1:"On-hookdatatransmission";Part2:"Off-hookdatatransmission";Part3:"Datalinkmessageandparametercodings".NationaltranspositiondatesDateofadoptionofthisEN:12January2001DateoflatestannouncementofthisEN(doa):30April2001DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31October2001DateofwithdrawalofanyconflictingNationalStandard(dow):31October2001SIST EN 300 659-1 V1.3.1:2003

ETSIETSIEN300659-1V1.3.1(2001-01)61ScopeThepresentdocumentspecifiesthesubscriberlineprotocolforthesupportofPSTNdisplayservicesatLocalExchange(LE)in"on-hook"state.Thesubscriberlineprotocolisaccomplishedbyusingasynchronousvoice-bandFrequency-ShiftKeying(FSK)signalling.ThedatatransmissionspecifiedinthepresentdocumentisprovidedonlyinthedirectionfromtheLEtotheTE.Inaddition,annexBisprovidedinordertoallowthecontinuationofuseinthosenetworksthatalreadyimplementedaDualToneMulti-Frequency(DTMF)basedsubscriberlineprotocol.TherequirementsimposedontheFSKsignalling-basedsubscriberlineprotocoldealwithdataencoding,datatransmissionrequirementsandthethreelayersoftheprotocolatthenetworksideoftheinterface:• presentationlayer;• datalinklayer;and• physicallayer.TherequirementsimposedontheDTMF-basedsubscriberlineprotocoldealwiththetransferoftheDTMFcodeddisplayinformation.TheproceduresandtheencodingarrangementsarespecifiedinannexBofthepresentdocument.TerminalEquipment(TE)canbeconnectedbyanalogueaccessdirectlytotheLEorthroughanAccessNetwork(AN).Inthelattercase,datatransmissioncanbeappliedfromtheLEorfromelsewhereinthenetworkhenceatransmissionpathneedstoexistfromtheLEtotheTEbeforedatatransmission.Itisthenetworkoperator'sresponsibilitytoensuretransmissionpathestablishment.Transmissionpathestablishmentproceduresareoutsidethescopeofthepresentdocument.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[1]ETSITR101182:"AnalogueTerminalsandAccess(ATA);Definitions,abbreviationsandsymbols".[2]ETSIETS300648(1997):"PublicSwitchedTelephoneNetwork(PSTN);CallingLineIdentificationPresentation(CLIP)supplementaryservice;Servicedescription".[3]ETSIES201235:"SpecificationofDualTonesMulti-Frequency(DTMF)TransmittersandReceivers",Part1toPart4.[4]ITU-TRecommendationQ.11(1988):"Numberingplanfortheinternationaltelephoneservice".[5]ITU-TRecommendationT.50(1992):"InternationalReferenceAlphabet(IRA)(FormerlyInternationalAlphabetNo.5orIA5)-Informationtechnology-7-bitcodedcharactersetforinformationinterchange".[6]ITU-TRecommendationV.23(1988):"600/1200-baudmodemstandardizedforuseinthegeneralswitchedtelephonenetwork".SIST EN 300 659-1 V1.3.1:2003

ETSIETSIEN300659-1V1.3.1(2001-01)7[7]ETSIEN300659-3(V1.3.1):"PublicSwitchedTelephoneNetwork(PSTN);Subscriberlineprotocoloverthelocalloopfordisplay(andrelated)services;Part3:Datalinkmessageandparametercodings".3Definitionsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thefollowingtermsanddefinitionsapply:callinglineidentity:seeETS300648[2]graphiccharacter:characterthathasavisualrepresentationnormallyhand-written,printedordisplayed;inIRAcharacters2/1to7/14(seeITU-TRecommendationT.50[5])longsilentperiod:silentperiodbetweenringpatternsloopstate:seeTR101182[1]markbit:symbol"1"(seeITU-TRecommendationV.23[6])quiescentstate:seeTR101182[1]ringpattern:consistsofoneormoreringingpulsesseparatedbyshortsilentperiodsRingingPulseAlertingSignal(RP-AS):pulseofringingcurrentusedtoalerttheTEthatadatatransmissionwillfollow.DurationofRP-ASisspecifiedinthepresentdocumentringingpulse:pulseofringingcurrentusedforcallarrivalindicationwithinaringpattern.Ringingattributes(currentvalues,durationofringingpulses,numberofringingpulsesintheringpatterns,cadence,etc.)arenetworkspecificshortsilentperiod:silentperiodbetweenringingpulsesinaringpatternspacebit:symbol"0"(seeITU-TRecommendationV.23[6])3.2AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:ANAccessNetworkASAlertingSignalCLIPCallingLineIdentificationPresentationDCDirectCurrentDT-ASDualTone-AlertingSignalDTMFDualToneMulti-FrequencyFSKFrequency-ShiftKeyingIRAInternationalReferenceAlphabetLELocalExchangeLRLineReversalLR+DT-ASLineReversalfollowedbyaDualTone-AlertingSignalPSTNPublicSwitchedTelephoneNetworkRP-ASRingingPulseAlertingSignalTASTEAlertingSignalTETerminalEquipment4DataencodingDataencodingshallbeasdescribedinEN300659-3[7].SIST EN 300 659-1 V1.3.1:2003

ETSIETSIEN300659-1V1.3.1(2001-01)85ProtocolrequirementsAnnexDgivesanoverviewofthedatatransmissionformat.5.1PresentationlayerThePresentationlayerspecifiestheformatsandsequenceofinformationthatLEtransmitstotheTE(Presentationlayermessage).ThePresentationlayermessageformatisillustratedinfigure1.PARAMETERTYPEPARAMETERLENGTHPARAMETERDATAOCTET(S)PARAMETERTYPEPARAMETERLENGTHPARAMETERDATAOCTET(S)Bit0781516PARAMETER1PARAMETERNFigure1:PresentationlayermessageformatEachparametershallconsistofaParametertype,aParameterlengthandParameteroctet(s).Parametertype(1octet):shallcontainanassignedbinaryencodedvaluetoidentifytheParameter.Parameterlength(1octet):shallcontainthebinaryencodednumberofParameteroctetsthatfollow.Parameterdataoctet(s):shallcontain1ormore(upto253)octets.ThevalueshallbeeitherbinaryencodedorencodedinaccordancewithITU-TRecommendationT.50[5].5.2DataLinklayerTheDataLinklayerisresponsibleforprovidingbiterrordetectioncapabilityandforprependingtheChannelSeizureSignalandtheMarkSignaltothePresentationlayermessage.TheDataLinklayermessageformatshallbeasillustratedinfigure2.CHANNELSEIZURESIGNALMARKSIGNALMESSAGETYPEMESSAGELENGTHPRESENTATIONLAYERMESSAGECHECKSUMFigure2:DataLinkmessageformatChannelSeizureSignal:shallconsistofablockof300continuousbitsofalternating"0"sand"1"s.Thefirstbittobetransmittedshallbea"0".Thelastbittobetransmittedshallbea"1".Itshallstartthedatatransmissiononlyin"on-hook"datatransmission.MarkSignal:shalleitherconsistofablockof180±25markbitsor80±25markbits.Messagetype(1octet):shallcontainanassignedbinaryencodedvaluetoidentifythemessage.Messagelength(1octet):shallcontainthebinaryencodednumberofoctetsoftheDataLinklayermessage(notincludingtheMessagetype,MessagelengthandChecksumoctets).Thisallowsapresentation-layermessagelengthbetween3and255octets.PresentationLay
...