conditionsunexpectederror

INTERNATIONALTELECOMMUNICATIONUNIONITU-TQ.
762TELECOMMUNICATIONSTANDARDIZATIONSECTOROFITU(12/1999)SERIESQ:SWITCHINGANDSIGNALLINGSpecificationsofSignallingSystemNo.
7–ISDNuserpartSignallingSystemNo.
7–ISDNUserPartgeneralfunctionsofmessagesandsignalsITU-TRecommendationQ.
762(FormerlyCCITTRecommendation)ITU-TQ-SERIESRECOMMENDATIONSSWITCHINGANDSIGNALLINGSIGNALLINGINTHEINTERNATIONALMANUALSERVICEQ.
1–Q.
3INTERNATIONALAUTOMATICANDSEMI-AUTOMATICWORKINGQ.
4–Q.
59FUNCTIONSANDINFORMATIONFLOWSFORSERVICESINTHEISDNQ.
60–Q.
99CLAUSESAPPLICABLETOITU-TSTANDARDSYSTEMSQ.
100–Q.
119SPECIFICATIONSOFSIGNALLINGSYSTEMSNo.
4ANDNo.
5Q.
120–Q.
249SPECIFICATIONSOFSIGNALLINGSYSTEMNo.
6Q.
250–Q.
309SPECIFICATIONSOFSIGNALLINGSYSTEMR1Q.
310–Q.
399SPECIFICATIONSOFSIGNALLINGSYSTEMR2Q.
400–Q.
499DIGITALEXCHANGESQ.
500–Q.
599INTERWORKINGOFSIGNALLINGSYSTEMSQ.
600–Q.
699SPECIFICATIONSOFSIGNALLINGSYSTEMNo.
7Q.
700–Q.
849GeneralQ.
700Messagetransferpart(MTP)Q.
701–Q.
709Signallingconnectioncontrolpart(SCCP)Q.
711–Q.
719Telephoneuserpart(TUP)Q.
720–Q.
729ISDNsupplementaryservicesQ.
730–Q.
739DatauserpartQ.
740–Q.
749SignallingSystemNo.
7managementQ.
750–Q.
759ISDNuserpartQ.
760–Q.
769TransactioncapabilitiesapplicationpartQ.
770–Q.
779TestspecificationQ.
780–Q.
799Q3interfaceQ.
800–Q.
849DIGITALSUBSCRIBERSIGNALLINGSYSTEMNo.
1Q.
850–Q.
999PUBLICLANDMOBILENETWORKQ.
1000–Q.
1099INTERWORKINGWITHSATELLITEMOBILESYSTEMSQ.
1100–Q.
1199INTELLIGENTNETWORKQ.
1200–Q.
1699SIGNALLINGREQUIREMENTSANDPROTOCOLSFORIMT-2000Q.
1700–Q.
1799BROADBANDISDNQ.
2000–Q.
2999Forfurtherdetails,pleaserefertothelistofITU-TRecommendations.
ITU-TQ.
762(12/1999)iITU-TRecommendationQ.
762SignallingSystemNo.
7–ISDNUserPartgeneralfunctionsofmessagesandsignalsSummaryThisITU-TRecommendationdescribesthemessages,parametersandthesignallinginformationcontainedwithinparametersusedbytheISDNuserpartprotocol,andtheirfunction.
SourceITU-TRecommendationQ.
762waspreparedbyITU-TStudyGroup11(1997-2000)andapprovedundertheWTSCResolution1procedureon3December1999.
iiITU-TQ.
762(12/1999)FOREWORDTheInternationalTelecommunicationUnion(ITU)istheUnitedNationsspecializedagencyinthefieldoftelecommunications.
TheITUTelecommunicationStandardizationSector(ITU-T)isapermanentorganofITU.
ITU-Tisresponsibleforstudyingtechnical,operatingandtariffquestionsandissuingRecommendationsonthemwithaviewtostandardizingtelecommunicationsonaworldwidebasis.
TheWorldTelecommunicationStandardizationConference(WTSC),whichmeetseveryfouryears,establishesthetopicsforstudybytheITU-Tstudygroupswhich,inturn,produceRecommendationsonthesetopics.
TheapprovalofITU-TRecommendationsiscoveredbytheprocedurelaiddowninWTSCResolution1.
InsomeareasofinformationtechnologywhichfallwithinITU-T'spurview,thenecessarystandardsarepreparedonacollaborativebasiswithISOandIEC.
NOTEInthisRecommendation,theexpression"Administration"isusedforconcisenesstoindicatebothatelecommunicationadministrationandarecognizedoperatingagency.
INTELLECTUALPROPERTYRIGHTSITUdrawsattentiontothepossibilitythatthepracticeorimplementationofthisRecommendationmayinvolvetheuseofaclaimedIntellectualPropertyRight.
ITUtakesnopositionconcerningtheevidence,validityorapplicabilityofclaimedIntellectualPropertyRights,whetherassertedbyITUmembersorothersoutsideoftheRecommendationdevelopmentprocess.
AsofthedateofapprovalofthisRecommendation,ITUhadnotreceivednoticeofintellectualproperty,protectedbypatents,whichmayberequiredtoimplementthisRecommendation.
However,implementorsarecautionedthatthismaynotrepresentthelatestinformationandarethereforestronglyurgedtoconsulttheTSBpatentdatabase.
ITU2001Allrightsreserved.
Nopartofthispublicationmaybereproducedorutilizedinanyformorbyanymeans,electronicormechanical,includingphotocopyingandmicrofilm,withoutpermissioninwritingfromtheITU.
ITU-TQ.
762(12/1999)iiiCONTENTSPage1General.
11.
1Scope.
11.
2References.
11.
3Termsanddefinitions11.
4Abbreviations.
22Signallingmessages.
43Signallingparameters.
74Parameterinformation12ITU-TQ.
762(12/1999)1ITU-TRecommendationQ.
762SignallingSystemNo.
7–ISDNUserPartgeneralfunctionsofmessagesandsignals1General1.
1ScopeThisITU-TRecommendationdescribestheelementsofsignallinginformationusedbytheISDNuserpartprotocolandtheirfunction.
Theencodingoftheseelements,theformatofthemessagesinwhichtheyareconveyed,andanindicationofwhetherornottheyarefornationaluse,aredescribedinITU-TRecommendationQ.
763[1].
1.
2ReferencesThefollowingITU-TRecommendationsandotherreferencescontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthisRecommendation.
Atthetimeofpublication,theeditionsindicatedwerevalid.
AllRecommendationsandotherreferencesaresubjecttorevision;allusersofthisRecommendationarethereforeencouragedtoinvestigatethepossibilityofapplyingthemostrecenteditionoftheRecommendationsandotherreferenceslistedbelow.
AlistofthecurrentlyvalidITU-TRecommendationsisregularlypublished.
[1]ITU-TRecommendationQ.
763(1999),SignallingSystemNo.
7–ISDNuserpartformatsandcodes.
[2]CCITTRecommendationQ.
28(1988),Determinationofthemomentofthecalledsubscriber'sanswerintheautomaticservice.
[3]CCITTRecommendationE.
260(1988),Basictechnicalproblemsconcerningthemeasurementandrecordingofcalldurations.
[4]CCITTRecommendationQ.
101(1988),Facilitiesprovidedininternationalsemi-automaticworking.
[5]ITU-TRecommendationQ.
1218(1995),InterfaceRecommendationforintelligentnetworkCS-1.
[6]ITU-TRecommendationQ.
1228(1997),InterfaceRecommendationforintelligentnetworkCS-2.
[7]ITU-TRecommendationE.
412(1998),Networkmanagementcontrols.
[8]ITU-TRecommendationQ.
850(1998),UseofcauseandlocationinthedigitalsubscriberSignallingSystemNo.
1andSignallingSystemNo.
7ISDNuserpart.
[9]CCITTRecommendationX.
229(1988),RemoteOperations:Protocolspecification.
[10]ITU-TRecommendationX.
121(1996),Internationalnumberingplanforpublicdatanetworks.
[11]CCITTRecommendationE.
212(1988),Identificationplanforlandmobilestations.
[12]ITU-TRecommendationQ.
704(1996),Signallingnetworkfunctionsandmessages.
1.
3TermsanddefinitionsSeeclauses2to4.
2ITU-TQ.
762(12/1999)1.
4AbbreviationsThisITU-TRecommendationusesthefollowingabbreviations:APPApplicationTransportParameterASEApplicationServiceElementATIIApplicationTransportInstructionIndicatorsCCBSCompletionofCallstoBusySubscriberCCNRCompletionofCallsonNoReplyCCSSCallCompletionServiceSetupDNICDataNetworkIdentificationCodeECTExplicitCallTransferGVNSGlobalVirtualNetworkServiceIDIdentifierINIntelligentNetworkISCInternationalSwitchingCentreLFBLookForBusyMCIDMaliciousCallIdentificationMLPPMultilevelPrecedenceandPre-emptionMNICMobileNetworkIdentificationCodePDUProtocolDataUnitQoRQueryonReleaseROERRemoteOperationErrorROIVRemoteOperationInvokeRORJRemoteOperationRejectRORSRemoteOperationResultSCCPSignallingConnectionControlPartSCFServiceControlFunctionSLRSegmentationLocalReferenceUIDUserInteractiveDialogueWGS-84WorldGeodeticSystem1984Table1definestheacronymsusedforISDNuserpartmessages.
ITU-TQ.
762(12/1999)3Table1/Q.
762–ISDNuserpartmessageacronymsAcronymMessageACMAddresscompleteANMAnswerAPMApplicationtransportBLABlockingacknowledgementBLOBlockingCCRContinuitycheckrequestCFNConfusionCGBCircuitgroupblockingCGBACircuitgroupblockingacknowledgementCGUCircuitgroupunblockingCGUACircuitgroupunblockingacknowledgementCONConnectCOTContinuityCPGCallprogressCRGChargeinformationCQMCircuitgroupqueryCQRCircuitgroupqueryresponseDRSDelayedrelease(reserved–usedin1988version)FAAFacilityacceptedFACFacilityFARFacilityrequestFOTForwardtransferFRJFacilityrejectGRACircuitgroupresetacknowledgementGRSCircuitgroupresetIAMInitialaddressIDRIdentificationrequestIRSIdentificationresponseINFInformationINRInformationrequestLPALoopbackacknowledgementLOPLooppreventionNRMNetworkresourcemanagementOLMOverloadPAMPass-alongPRIPre-releaseinformationRELReleaseRESResumeRLCReleasecompleteRSCResetcircuitSAMSubsequentaddressSDMSubsequentdirectorynumberSGMSegmentationSUSSuspendUBLUnblockingUBAUnblockingacknowledgementUCICUnequippedcircuitidentificationcodeUPAUserpartavailableUPTUserparttestUSRUser-to-userinformation4ITU-TQ.
762(12/1999)2Signallingmessages2.
1AddressCompleteMessage(ACM):Amessagesentinthebackwarddirectionindicatingthatalltheaddresssignalsrequiredforrouteingthecalltothecalledpartyhavebeenreceived.
2.
2Answermessage(ANM):Amessagesentinthebackwarddirectionindicatingthatthecallhasbeenanswered.
Insemi-automaticworking,thismessagehasasupervisoryfunction.
Inautomaticworking,thismessageisusedinconjunctionwithcharginginformationinorderto:–startmeteringthechargetothecallingsubscriber(seeRecommendationQ.
28[2]);and–startmeasurementofcalldurationforinternationalaccountingpurposes(seeRecommendationE.
260[3]).
2.
3ApplicationTransportmessage(APM):AmessagesentineitherdirectiontoconveyapplicationinformationusingtheApplicationTransportmechanism.
2.
4Blockingmessage(BLO):Amessagesentonlyformaintenancepurposestotheexchangeattheotherendofacircuit,tocauseanengagedconditionofthatcircuitforsubsequentcallsoutgoingfromthatexchange.
Whenacircuitisusedinthebothwaymodeofoperation,anexchangereceivingtheblockingmessagemustbecapableofacceptingincomingcallsontheconcernedcircuitunlessithasalsosentablockingmessage.
Undercertainconditions,ablockingmessageisalsoaproperresponsetoaresetcircuitmessage.
2.
5BlockingAcknowledgementmessage(BLA):Amessagesentinresponsetoablockingmessageindicatingthatthecircuithasbeenblocked.
2.
6CallProgressmessage(CPG):Amessage,sentineitherdirectionduringthesetuporactivephaseofthecall,indicatingthatanevent,whichisofsignificance,andshouldberelayedtotheoriginatingorterminatingaccess,hasoccurred.
2.
7Chargeinformationmessage(CRG):Informationsentineitherdirectionforaccountingand/orcallchargingpurposes.
2.
8CircuitGroupBlockingmessage(CGB):Amessagesenttotheexchangeattheotherendofanidentifiedgroupofcircuitstocauseanengagedconditionofthisgroupofcircuitsforsubsequentcallsoutgoingfromthatexchange.
Anexchangereceivingacircuitgroupblockingmessagemustbeabletoacceptincomingcallsonthegroupofblockedcircuitsunlessithasalsosentablockingmessage.
Undercertainconditions,acircuitgroupblockingmessageisalsoaproperresponsetoaresetcircuitmessage.
2.
9CircuitGroupBlockingAcknowledgementmessage(CGBA):Amessagesentinresponsetoacircuitgroupblockingmessagetoindicatethattherequestedgroupofcircuitshasbeenblocked.
2.
10circuitGroupResetmessage(GRS):Amessagesenttoreleaseanidentifiedgroupofcircuitswhen,duetomemorymutilationorothercauses,itisunknownwhetherforexample,areleaseorreleasecompletemessageisappropriateforeachofthecircuitsinthegroup.
Ifatthereceivingendacircuitisremotelyblocked,receptionofthismessageshouldcausethatconditiontoberemoved.
2.
11circuitGroupResetAcknowledgementmessage(GRA):Amessagesentinresponsetoacircuitgroupresetmessageandindicatingthattherequestedgroupofcircuitshasbeenreset.
Themessagealsoindicatesthemaintenanceblockingstateofeachcircuit.
2.
12CircuitGroupUnblockingmessage(CGU):Amessagesenttotheexchangeattheotherendofanidentifiedgroupofcircuitstocausecancellationinthatgroupofcircuitsofanengagedconditioninvokedearlierbyablockingorcircuitgroupblockingmessage.
ITU-TQ.
762(12/1999)52.
13CircuitGroupUnblockingAcknowledgementmessage(CGUA):Amessagesentinresponsetoacircuitgroupunblockingmessagetoindicatethattherequestedgroupofcircuitshasbeenunblocked.
2.
14CircuitgroupQueryMessage(CQM):Amessagesentonaroutineordemandbasistorequestthefar-endexchangetogivethestateofallcircuitsinaparticularrange.
2.
15CircuitgroupQueryResponsemessage(CQR):Amessagesentinresponsetoacircuitgroupquerymessagetoindicatethestateofallcircuitsinaparticularrange.
2.
16Confusionmessage(CFN):Amessagesentinresponsetoanymessage(otherthanaconfusionmessage)iftheexchangedoesnotrecognizethemessageordetectsapartofthemessageasbeingunrecognized.
2.
17Connectmessage(CON):Amessagesentinthebackwarddirectionindicatingthatalltheaddresssignalsrequiredforrouteingthecalltothecalledpartyhavebeenreceivedandthatthecallhasbeenanswered.
2.
18Continuitymessage(COT):Amessagesentintheforwarddirectionindicatingwhetherornotthereiscontinuityontheprecedingcircuit(s)aswellasoftheselectedcircuittothefollowingexchange,includingverificationofthecommunicationpathacrosstheexchangewiththespecifieddegreeofreliability.
2.
19ContinuityCheckRequestmessage(CCR):Amessagesentbyanexchangeforacircuitonwhichacontinuitycheckistobeperformed,totheexchangeattheotherendofthecircuit,requestingcontinuitycheckingequipmenttobeattached.
2.
20FacilityAcceptedmessage(FAA):Amessagesentinresponsetoafacilityrequestmessageindicatingthattherequestedfacilityhasbeeninvoked.
2.
21Facilitymessage(FAC):Amessagesentineitherdirectionatanyphaseofthecalltorequestanactionatanotherexchange.
Themessageisalsousedtocarrytheresults,errororrejectionofapreviouslyrequestedaction.
2.
22FacilityRejectmessage(FRJ):Amessagesentinresponsetoafacilityrequestmessagetoindicatethatthefacilityrequesthasbeenrejected.
2.
23FacilityRequestmessage(FAR):Amessagesentfromanexchangetoanotherexchangetorequestactivationofafacility.
2.
24ForwardTransfermessage(FOT):Amessagesentintheforwarddirectiononsemi-automaticcallswhentheoutgoinginternationalexchangeoperatorwantsthehelpofanoperatorattheincominginternationalexchange.
Themessagewillnormallyservetobringanassistanceoperator(seeRecommendationQ.
101[4])intothecircuitifthecallisautomaticallysetupattheexchange.
Whenthecalliscompletedviaanoperator(incomingordelayoperator)attheincominginternationalexchange,themessageshouldpreferablycausethisoperatortoberecalled.
2.
25IdentificationRequestmessage(IDR):Amessagesentinthebackwarddirectiontorequestactionregardingthemaliciouscallidentificationsupplementaryservice.
2.
26IdentificationResponsemessage(IRS):Amessagesentinresponsetotheidentificationrequestmessage.
2.
27Informationmessage(INF):Amessagesenttoconveyinformationinassociationwithacall,whichmayhavebeenrequestedinaninformationrequestmessage.
2.
28InformationRequestmessage(INR):Amessagesentbyanexchangetorequestinformationinassociationwithacall.
2.
29InitialAddressmessage(IAM):Amessagesentintheforwarddirectiontoinitiateseizureofanoutgoingcircuitandtotransmitnumberandotherinformationrelatingtotherouteingandhandlingofacall.
6ITU-TQ.
762(12/1999)2.
30LoopbackAcknowledgementmessage(LPA):Amessagesentinthebackwarddirectioninresponsetoacontinuitycheckrequestmessageindicatingthataloop(ortransceiverinthecaseofa2-wirecircuit)hasbeenconnected.
2.
31LoopPreventionmessage(LOP):AmessagesenttoconveyinformationrequiredbytheECTsupplementaryservice.
2.
32NetworkResourceManagementmessage(NRM):Amessagesentinordertomodifynetworkresourcesassociatedwithacertaincall.
Themessageissentalonganestablishedpathinanydirectioninanyphaseofthecall.
2.
33OverloadMessage(OLM):Amessagesentinthebackwarddirection,onnon-prioritycallsinresponsetoanIAM,toinvoketemporarytrunkblockingofthecircuitconcernedwhentheexchangegeneratingthemessageissubjecttoloadcontrol.
2.
34Pass-AlongMessage(PAM):Amessagethatmaybesentineitherdirectiontotransferinformationbetweentwosignallingpointsalongthesamesignallingpathasthatusedtoestablishaphysicalconnectionbetweenthosetwopoints.
2.
35Pre-releaseInformationmessage(PRI):AmessagetobeusedwiththeReleasemessageforthetransportofinformationwheresendingofthatinformationintheReleasemessageitselfwouldcausecompatibilityproblemswithISUP1992andsubsequentversionsoftheISUPprotocol.
2.
36Releasemessage(REL):Amessagesentineitherdirectiontoindicatethatthecircuitisbeingreleasedduetothereason(cause)suppliedandisreadytobeputintotheidlestateonreceiptofthereleasecompletemessage.
Wherethecallistoberedirectedthemessagewillalsocarrytheredirectionnumber.
2.
37ReleaseCompletemessage(RLC):Amessagesentineitherdirectioninresponsetothereceiptofareleasemessage,orifappropriatetoaresetcircuitmessage,whenthecircuitconcernedhasbeenbroughtintotheidlecondition.
2.
38ResetCircuitmessage(RSC):Amessagesenttoreleaseacircuitwhen,duetomemorymutilationorothercauses,itisunknownwhetherforexample,areleaseorareleasecompletemessageisappropriate.
If,atthereceivingend,thecircuitisremotelyblocked,receptionofthismessageshouldcausethatconditiontoberemoved.
2.
39Resumemessage(RES):Amessagesentineitherdirectionindicatingthatthecallingorcalledparty,afterhavingbeensuspended,isreconnected.
2.
40SegmentationMessage(SGM):Amessagesentineitherdirectiontoconveyanadditionalsegmentofanoverlengthmessage.
2.
41SubsequentDirectoryNumbermessage(SDM):AmessagethatmaybesentintheforwarddirectionfollowinganInitialAddressMessage,toconveyadditionalcalledpartynumberinformation,whenthecalledpartynumberintheInitialAddressMessagewascontainedintheCalledDirectoryNumberparameter.
2.
42SubsequentAddressMessage(SAM):Amessagethatmaybesentintheforwarddirectionfollowinganinitialaddressmessage,toconveyadditionalcalledpartynumberinformation.
2.
43Suspendmessage(SUS):Amessagesentineitherdirectionindicatingthatthecallingorcalledpartyhasbeentemporarilydisconnected.
2.
44Unblockingmessage(UBL):Amessagesenttotheexchangeattheotherendofacircuittocancel,inthatexchange,theengagedconditionofthecircuitcausedbyapreviouslysentblockingorcircuitgroupblockingmessage.
2.
45UnblockingAcknowledgementMessage(UBA):Amessagesentinresponsetoanunblockingmessageindicatingthatthecircuithasbeenunblocked.
ITU-TQ.
762(12/1999)72.
46UnequippedCircuitIdentificationCodemessage(UCIC):Amessagesentfromoneexchangetoanotherwhenitreceivesanunequippedcircuitidentificationcode.
2.
47UserPartAvailablemessage(UPA):Amessagesentineitherdirectionasaresponsetoauserparttestmessage,toindicatethattheuserpartisavailable.
2.
48UserPartTestmessage(UPT):Amessagesentineitherdirectiontotestthestatusofauserpartmarkedasunavailableforasignallingpoint.
2.
49User-to-userinformationmessage(USR):Amessagetobeusedforthetransportofuser-to-usersignallingindependentofcallcontrolmessages.
3Signallingparameters3.
1accessdeliveryinformation:InformationsentinthebackwarddirectionindicatingthataSETUPmessagewasgeneratedatthedestinationaccess.
3.
2accesstransport:Informationgeneratedontheaccesssideofacallandtransferredtransparentlyineitherdirectionbetweenoriginatingandterminatinglocalexchanges.
Theinformationissignificanttobothusersandlocalexchanges.
3.
3applicationtransportparameter(APP):Informationsentineitherdirectiontoallowthepeer-to-peercommunicationofApplicationTransportmechanismuserapplications.
3.
4automaticcongestionlevel:Informationsenttotheexchangeattheotherendofacircuittoindicatethataparticularlevelofcongestionexistsatthesendingexchange.
3.
5backwardcallindicators:Informationrelatingtothecharacteristicsoftheconnection,signallingpathandcalledpartysentinthebackwarddirection.
3.
6backwardGVNS:InformationsentinthebackwarddirectionusedforaGVNScalltoconveyGVNSrelatedinformation.
3.
7calldiversioninformation:Informationsentinthebackwarddirectionindicatingtheredirectingreasonandthenotificationsubscriptionoptionoftheredirectinguser.
3.
8calldiversiontreatmentindicators:Informationsentintheforwarddirectionconcerningtreatmentofcalldiversion.
3.
9callhistoryinformation:Informationsentinthebackwarddirectiontoindicatetheaccumulatedpropagationdelayofaconnection.
3.
10callofferingtreatmentindicators:Informationsentintheforwarddirectionconcerningtreatmentofcalloffering.
3.
11callreference:Circuitindependentinformationidentifyingaparticularcall.
3.
12calltransfernumber:Informationsentinbothdirectionstoidentifyeachoftheusersinvolvedinacalltransfer.
3.
13calltransferreference:InformationusedtoconveyareferencenumberassociatedwiththeECTsupplementaryservice.
3.
14calleddirectorynumber:Informationtoindicatethedirectorynumber.
Thedirectorynumberisanumberinthenationalnumberingschemethatisallocatedtoacustomerforatelephonyservice.
3.
15calledINnumber:InformationindicatingthenumberwhichwasreceivedintheSSPascalledpartynumberinIAMandSAMmessages.
3.
16calledpartynumber:Informationtoidentifythecalledparty.
8ITU-TQ.
762(12/1999)3.
17callinggeodeticlocation:Informationthatindicatesthegeodeticlocationofthecallingparty.
ThereferencesystemforthecodingistheWorldGeodeticSystem1984,(WGS-84).
TheoriginoftheWGS-84coordinatesystemisthegeometriccentreoftheWGS-84ellipsoid.
Theellipsoidisconstructedbytherotationofanellipsearoundtheminoraxisthatisorientedinthenorth-southdirection.
Therotationaxisisthepolaraxisoftheellipsoid,andtheplaneorthogonaltoitandincludingthecentreofsymmetryistheequatorialplane.
Therelevantdimensionsareasfollows:MajorAxis(a)=6378137mMinorAxis(b)=6356752.
314mCoordinatesarethenexpressedintermsoflongitudeandlatituderelevanttothisellipsoid.
Therangeoflongitudeis180°to+180°,andtherangeoflatitudeis90°to+90°.
0°longitudecorrespondstotheGreenwichMeridian,andpositiveanglesaretotheEast,whilenegativeanglesaretotheWest.
0°latitudecorrespondstotheequator,andpositiveanglesaretotheNorth,whilenegativeanglesaretotheSouth.
Altitudesaredefinedasthedistancebetweentheellipsoidandthepoint,alongalineorthogonaltotheellipsoid.
3.
18callingpartynumber:Informationsentintheforwarddirectiontoidentifythecallingparty.
3.
19callingparty'scategory:Informationsentintheforwarddirectionindicatingthecategoryofthecallingpartyand,incaseofsemi-automaticcalls,theservicelanguagetobespokenbytheincoming,delayandassistanceoperators.
3.
20causeindicators:Informationsentineitherdirectionindicatingthereasonforsendingthemessage(e.
g.
releasemessage).
3.
21CCNRpossibleindicator:InformationsentinACM(subscriberfree)/CPG(alerting)toindicatethepossibilitytoinvokeapossiblesucceedingCCNRservicerequest.
3.
22CCSS:InformationsentinaninitialaddressmessageindicatingthatacallisaCCBSoraCCNRcallasdefinedintheCCBSorCCNRsupplementaryservice.
3.
23chargedpartyidentification:Informationidentifyingthechargedparty,e.
g.
theaccountnumber.
3.
24circuitassignmentmap:InformationsentintheforwarddirectiontoidentifythecircuitsusedforanN*64kbit/sconnection.
3.
25circuitgroupsupervisionmessagetype:Informationsentinacircuitgroupblockingorunblockingmessage,indicatingwhetherblocking(unblocking)ismaintenanceorientedorhardwareoriented.
3.
26circuitstateindicator:Informationindicatingthestateofacircuitaccordingtothesendingexchange.
3.
27closedusergroupinterlockcode:Informationuniquelyidentifyingaclosedusergroupwithinanetwork.
3.
28collectcallrequest:Informationsentintheforwarddirectionindicatingwhetherornotacallisacollectcall.
3.
29conferencetreatmentindicators:Informationsentinbothdirectionsconcerningtreatmentofamulti-partycall.
3.
30connectednumber:Informationsentinthebackwarddirectiontoidentifytheconnectedparty.
ITU-TQ.
762(12/1999)93.
31connectionrequest:Informationsentintheforwarddirectiononbehalfofthesignallingconnectioncontrolpartrequestingtheestablishmentofanend-to-endconnection.
3.
32continuityindicators:Informationsentintheforwarddirectionindicatingwhetherornotthecontinuitycheckontheoutgoingcircuitwassuccessful.
Acontinuitychecksuccessfulindicationalsoimpliescontinuityoftheprecedingcircuitsandsuccessfulverificationofthepathacrosstheexchangewiththespecifieddegreeofreliability.
3.
33correlationid:InformationusedbytheSCFforcorrelationwithapreviousconnection(seeITU-TRecommendationsQ.
1218[5]andQ.
1228[6]–Definitionofcommondatatypes).
3.
34displayinformation:Informationsentineitherdirectionindicatingatextstringtobesenttotheuser.
3.
35echocontrolinformation:Indicatorsusedtorequestactivationanddeactivationofechocontroldevices,andtorespondtosuchrequests.
3.
36endofoptionalparameters:Theendofoptionalparametersfieldindicatesthattherearenomoreoptionalparametersinthemessage.
3.
37eventinformation:Informationindicatingthetypeofeventwhichcausedacallprogressmessagetobesent.
3.
38facilityindicator:Informationsentinfacilityrelatedmessagesidentifyingthefacilityorfacilitieswithwhichthemessageisconcerned.
3.
39forwardcallindicators:Informationrelatingtothecharacteristicsoftheconnection,signallingpathandcallingpartysentintheforwarddirection.
3.
40forwardGVNS:InformationsentintheforwarddirectionusedforaGVNScalltoconveyGVNSrelatedinformation.
3.
41genericdigits:Digitinformation,whichisnotsuitabletobesentwithinnumberingaddressparameter,sentineitherdirectiontoconveyinformationbetweenexchangesduetosupplementaryservice.
3.
42genericnotification:Informationsentineitherdirectionintendedtoprovidesupplementaryservicenotificationtoauser.
3.
43genericnumber:Numberinformationsentineitherdirectiontoenhancenetworkoperationorforsupplementaryservices.
3.
44genericreference:(notusedinthe1997andsubsequentversionsoftheISUPRecommendations).
3.
45hopcounter:Informationsentintheforwarddirectiontominimizetheimpactoflooping.
TheinitialcountdeterminesthemaximumnumberofcontiguousISUPinterexchangecircuitsthatareallowedtocompletethecall,assumingallsubsequentintermediateexchangesdecrementthehopcounter.
3.
46HTRinformation:InformationidentifyingaHardtoReachdestination(seeE.
412[7]).
3.
47informationindicators:Informationidentifyingtheoptionalparametersincludedinamessage.
3.
48informationrequestindicators:Informationidentifyingtheoptionalparametersrequestedinamessage.
3.
49locationnumber:Informationsenttoidentifythegeographicalarea(e.
g.
region,country,city,etc.
)oftheoriginofacall.
Itisprimarilyintendedtoprovideservicesformobileoriginatedcalls.
10ITU-TQ.
762(12/1999)3.
50looppreventionindicators:Informationsentinassociationwitharequest(orresponsetoarequest)whenthelooppreventionprocedureisperformedintheECTsupplementaryservice.
3.
51MCIDrequestindicator:Informationsentinthebackwarddirectiontorequesttheidentityofthecallingpartyforthepurposeofmaliciouscallidentification.
3.
52MCIDresponseindicator:InformationsentintheforwarddirectiontorespondtoaMCIDrequestandindicatingwhetherornottheMCIDinformationisavailable.
3.
53messagecompatibilityinformation:Informationsentineitherdirectionindicatinghowanexchangeshouldreactincasethismessageisunrecognized.
3.
54MLPPprecedence:Informationrelatingspecificallytothemultilevelprecedenceandpre-emptionservice.
3.
55natureofconnectionindicators:Informationrelatingtothetransmissionpathusedonaconnection.
3.
56networkmanagementcontrols:Informationsentintheforwarddirectionconcerningnetworkmanagementrelatedactionforacall.
3.
57networkrouteingnumber:Informationtoindicatethenetworkrouteingnumber.
Thenetworkrouteingnumberisanumberusedbythenetworktorouteacall.
3.
58networkspecificfacility:Servicerelatedinformationtransparentlytransferredineitherdirectionbetweenthelocalexchangeandtheidentifiednetworkwhichcontractstheservice.
Theinformationissignificanttobothuserandtheidentifiednetwork.
3.
59numberportabilityforwardinformation:Informationsentintheforwarddirectionconcerningtreatmentofnumberportability.
3.
60optionalbackwardcallindicators:Informationrelatingtothecharacteristicsoftheconnection,signallingpathandcalledpartysentinthebackwarddirection.
3.
61optionalforwardcallindicators:Informationrelatingtothecharacteristicsoftheconnection,signallingpathandcalledpartysentintheforwarddirection.
3.
62originalcallednumber:Informationsentintheforwarddirectionwhenacallisredirectedandidentifiestheoriginalcalledparty.
3.
63originalcalledINnumber:InformationsentintheforwarddirectionindicatingtheoriginalcalledINnumber,ifmultipleINinteractionshavetakenplace.
3.
64originationISCpointcode:Informationsentintheinitialaddressmessageofaninternationalcall,indicatingthepointcodeoftheoriginatingISC.
3.
65parametercompatibilityinformation:Informationsentineitherdirectionindicatinghowanexchangeshouldreactincasetheparameterisunrecognized.
3.
66pivotcapability:Generalinformationaboutallowedoperationofpivotrouteing.
3.
67pivotcounter:Informationindicatingthenumberofpivotattempts(successfulandunsuccessful)thatacallhasundergone.
3.
68pivotrouteingbackwardinformation:Informationsentinthebackwarddirectioninsupportofpivotrouteing.
3.
69pivotrouteingforwardinformation:Informationsentintheforwarddirectioninsupportofpivotrouteing.
3.
70pivotrouteingindicators:InformationusedintheFACmessagetoindicatethepivotrouteingactiontobeperformedatthenext(failureaction)orprevious(requestactionorcancelaction)exchange.
ITU-TQ.
762(12/1999)113.
71pivotstatus:Informationusedtoinformexchangesregardingthepossibilitythatanoffertopivotroutewillbeacceptedlater.
3.
72propagationdelaycounter:Informationsentinforwarddirectiontoindicatethepropagationdelayofaconnection.
Thisinformationisaccumulatedwhilsttheparameteristransferredthroughthenetwork.
Thepropagationdelayinformationisrepresentedbyacountercountinginintegermultiplesof1ms.
3.
73QoRcapability:InformationsentintheforwarddirectiontoindicatethatatleastoneexchangeintheconnectionisabletoperformthequerytothedatabaseasdescribedintheQoRprocedures.
3.
74rangeandstatus:Informationsentinacircuitgroupsupervisionmessage(e.
g.
circuitgroupblocking)toindicatetherangeandstatusofcircuitsaffectedbytheactioninthemessage.
3.
75redirectbackwardinformation:Informationsentinthebackwarddirectioninsupportofredirection.
3.
76redirectcapability:Informationsentintheforwarddirectiontoindicatethatatleastoneexchangeintheconnectionisabletoredirectthecallandthecallstatesinwhichtheprocedureispossible.
3.
77redirectcounter:Informationindicatingthenumberofinvocationsofredirectionthatacallhasundergone.
3.
78redirectforwardinformation:Informationsentintheforwarddirectioninsupportofredirection.
3.
79redirectstatus:Informationusedtoinformexchangesregardingthepossibilitythatanoffertoredirectwillbeacceptedlater.
3.
80redirectingnumber:Informationsentintheforwarddirectionwhenacallisdiverted,indicatingthenumberfromwhichthecallwasdiverted.
3.
81redirectioninformation:Informationsentineitherdirectiongivinginformationaboutcallredirectionorcallrerouteing.
3.
82redirectionnumber:Informationsentinthebackwarddirectionindicatingthenumbertowardswhichthecallmustberedirectedorhasbeenforwarded.
3.
83redirectionnumberrestriction:Informationsentinthebackwarddirectionindicatingwhetherthediverted-touserallowsthepresentationofhisnumber.
3.
84remoteoperations:TheRemoteOperationsparameterisusedtoindicatetheinvocationofasupplementaryserviceidentifiedbyanoperationvalueandalsocarrytheresultorerrorindicationsdependingontheoutcomeoftheoperation.
3.
85SCFid:InformationindicatingtheSCFidentifier(seeITU-TRecommendationsQ.
1218[5]andQ.
1228[6]–Definitionofcommondatatypes).
3.
86serviceactivation:Informationsentineitherdirectiontoindicatetheinvocation,acceptanceorrejectionofsupplementaryservices,whennoserviceassociatedparameteristobesent.
3.
87signallingpointcode:Informationsenttoidentifythesignallingpointinwhichaneventoccurred.
3.
88subsequentnumber:Additionalcalledpartyaddressdigitssentsubsequenttothesendingofthecalledpartynumberparameter.
3.
89suspend/resumeindicators:Informationsentinthesuspendandresumemessagestoindicatewhethersuspend/resumewasinitiatedbyanISDNsubscriberorbythenetwork.
12ITU-TQ.
762(12/1999)3.
90transitnetworkselection:Informationsentintheinitialaddressmessageindicatingthetransitnetworkrequestedtobeusedinthecall.
3.
91transmissionmediumrequirement:Informationsentintheforwarddirectionindicatingthetypeoftransmissionmediumrequiredfortheconnection(e.
g.
64kbit/sunrestricted,speech).
3.
92transmissionmediumrequirementprime:Informationsentintheforwarddirectionindicatingthefallbackconnectiontypeincaseoffallback.
3.
93transmissionmediumused:Informationsentinthebackwarddirectionindicatingaresultingfallbackconnectiontypeusedforacallafterfallbackhasoccurred.
3.
94UIDactionindicators:Informationsentinthebackwarddirectiontoinstructprecedingexchangestoenableauserinteractivedialoguetooccur.
3.
95UIDcapabilityindicators:Informationsentintheforwarddirectiontoinformsucceedingexchangesthatonrequestauserinteractivedialogueispossible.
3.
96userserviceinformation:Informationsentintheforwarddirectionindicatingthebearercapabilityrequestedbythecallingparty.
3.
97userserviceinformationprime:Informationsentintheforwarddirectionindicatingtheadditionalbearercapabilityrequestedbythecallingparty.
3.
98userteleserviceinformation:InformationsentintheinitialaddressmessageindicatingtheHigherLayerCompatibilityinformationrequestedbythecallingparty.
3.
99user-to-userindicators:Informationsentinassociationwitharequest(orresponsetoarequest)foruser-to-usersignallingsupplementaryservice(s).
3.
100user-to-userinformation:Informationgeneratedbyauserandtransferredtransparentlythroughtheinterexchangenetworkbetweentheoriginatingandterminatinglocalexchanges.
4Parameterinformation4.
1accessdeliveryindicator:InformationsentinthebackwarddirectionindicatingthataSETUPmessagewasgeneratedatthedestinationaccess.
4.
2addresspresentationrestrictedindicator:Informationsentineitherdirectiontoindicatethattheaddressinformationisnottobepresentedtoapublicnetworkuser,butcanbepassedtoanotherpublicnetwork.
Itmayalsobeusedtoindicatethattheaddresscannotbeascertained.
4.
3addresssignal:Anelementofinformationinanetworknumber.
Theaddresssignalmayindicatedigitvalues0to9,code11orcode12.
OneaddressSignalValue(ST)isreservedtoindicatetheendofthecalledpartynumber.
4.
4altitude:InformationthatindicatesthegeodeticlocationofthecallingpartyintermsofdistanceaboveorbelowtheWGS-84ellipsoidsurface.
4.
5altitudesign:InformationthatindicatesthegeodeticlocationofthecallingpartyintermsofaboveorbelowtheWGS-84ellipsoidsurface.
4.
6altitudeuncertaintycode:Informationindicatingthelevelofuncertaintyinherenttotheassociatedaltitudeinformation.
4.
7APMSegmentationindicator:InformationsentineitherdirectiontoindicatethenumberofremainingsegmentscarryinginformationusingtheAPMmechanismthatwillbeforwarded.
4.
8applicationcontextidentifier:Avaluethatuniquelyidentifiestheapplicationusingtheapplicationtransportmechanism.
ITU-TQ.
762(12/1999)134.
9applicationtransportinstructionindicators(ATII):Informationsentineitherdirectionindicatinghowanexchangeshouldreactincasetheindicatedapplicationusingtheapplicationtransportmechanismisnotsupported.
4.
10binarycode:AcodeallocatedtoaclosedusergroupadministeredbyaparticularISDNordatanetwork.
4.
11calldiversionmayoccurindicator:Informationsentinthebackwarddirectionindicatingthatcalldiversionmayoccur,dependingontheresponsereceived(orlackthereof)fromthecalledparty.
4.
12callidentity:Informationsentinthecallreferenceparameterindicatingtheidentityofacallinasignallingpoint.
4.
13calltobedivertedindicator:Informationsentintheforwarddirectionindicatingwhetherdivertingofthecallshallbeaccepted.
4.
14calltobeofferedindicator:Informationsentintheforwarddirectionindicatingwhetherthecallshallbeofferediftheaccessismarkedwithcallofferingrestrictions.
4.
15calledparty'scategoryindicator:Informationsentinthebackwarddirectionindicatingthecategoryofthecalledparty,e.
g.
ordinarysubscriberorpayphone.
4.
16calledparty'sstatusindicator:Informationsentinthebackwarddirectionindicatingthestatusofthecalledparty,e.
g.
subscriberfree.
4.
17callingpartyaddressrequestindicator:Informationsentinthebackwarddirectionindicatingarequestforthecallingpartyaddresstobereturned.
4.
18callingpartyaddressresponseindicator:Informationsentinresponsetoarequestforthecallingpartyaddress,indicatingwhethertherequestedaddressisincluded,notincluded,notavailableorincomplete.
4.
19callingparty'scategoryrequestindicator:Informationsentinthebackwarddirectionindicatingarequestforthecallingparty'scategorytobereturned.
4.
20callingparty'scategoryresponseindicator:Informationsentinresponsetoarequestforthecallingparty'scategory,indicatingwhetherornottherequestedinformationisincludedintheresponse.
4.
21causevalue:Informationsentineitherdirectionindicatingthereasonforsendingthemessage(e.
g.
releasemessage).
DefinitionsforeachcausevaluearedefinedinITU-TRecommendationQ.
850[8].
4.
22CCSScallindicator:Informationsentintheforwarddirection,usedinaCCBSorCCNRcallsetup,todistinguishthiscallfromanordinarycall,atthedestinationlocalexchange.
4.
23CCNRpossibleindicator:IndicatorusedintheCCNRPossibleIndicatorparameterintheACM(subscriberfree)/CPG(alerting)toindicatethepossibilitytoinvokeapossiblesucceedingCCNRservicerequest.
4.
24chargeindicator:Informationsentinthebackwarddirectionindicatingwhetherornotthecallischargeable.
4.
25chargeinformationrequestindicator:Informationsentineitherdirectionrequestingchargeinformationtobereturned.
4.
26chargeinformationresponseindicator:Informationsentinresponsetoarequestforchargeinformationindicatingwhetherornottherequestedinformationisincluded.
4.
27circuitidentificationcode:Informationidentifyingthephysicalpathbetweenapairofexchanges.
14ITU-TQ.
762(12/1999)4.
28closedusergroupcallindicator:Informationindicatingwhetherornottheconcernedcallcanbesetupasaclosedusergroupcalland,ifaclosedusergroupcall,whetherornotoutgoingaccessisallowed.
4.
29codingstandard:Informationsentinassociationwithaparameter(e.
g.
causeindicators)identifyingthestandardinwhichtheparameterformatisdescribed.
4.
30componentIDtag:InformationidentifyingthetypeofcomponentIDusedinremoteoperations.
4.
31componenttype:TherearefourtypesofcomponentsthatmaybepresentintheRemoteOperationsparameter.
ThefourProtocolDataUnits(PDU)definedinITU-TRecommendationX.
229[9]areused,viz.
:ComponentX.
229PDUInvokeROIVReturnResultRORSReturnErrorROERRejectRORJThesecomponenttypesaredefinedasfollows:a)InvokeTheInvokecomponentrequeststhatanoperationbeperformed.
Itmaybelinkedtoanotheroperationinvocationpreviouslysentbytheotherend.
Inthiscaseitisknownasa"LinkedInvoke".
b)ReturnResultTheReturnResultcomponentreportssuccessfulcompletionofanoperation.
c)ReturnErrorTheReturnErrorcomponentreportsthatanoperationhasnotbeensuccessfullycompleted.
d)RejectTheRejectcomponentreportsthereceiptandrejectionofanincorrectcomponentotherthanaRejectcomponent.
ThepossiblecausesforrejectingacomponentaredefinedbytheProblemCodeelement.
4.
32componenttypetag:Informationidentifyingthetypeofcomponentusedinremoteoperations.
4.
33confidence:Informationidentifyingtheconfidencebywhichitisknownthatthecallingpartylieswithintheassociatedshapedescription.
4.
34conferenceacceptanceindicator:Informationsentinbothdirectionsindicatingwhetherarequestforamulti-partycall,i.
e.
conferenceorthree-partycall,shallbeaccepted.
4.
35connectedlineidentityrequestindicator:Informationsentintheforwarddirectionindicatingarequestfortheconnectedpartynumbertobereturned.
4.
36continuitycheckindicator:Informationsentintheforwarddirectionindicatingwhetherornotacontinuitycheckwillbeperformedonthecircuit(s)concernedorisbeing(hasbeen)performedonapreviouscircuitintheconnection.
4.
37credit:Informationsentinaconnectionrequest,indicatingthewindowsizerequestedbythesignallingconnectioncontrolpartforanend-to-endconnection.
4.
38degreesoflatitude:Informationthatindicatesthegeodeticlocationofthecallingpartyintermsofdegreesoflatitudenorthorsouthoftheequator.
ITU-TQ.
762(12/1999)154.
39degreesoflongitude:InformationthatindicatesthegeodeticlocationofthecallingpartyintermsofdegreesoflongitudeeastorwestoftheGreenwichMeridian.
4.
40diagnostic:Informationsentinassociationwithacauseandwhichprovidessupplementaryinformationaboutthereasonforsendingthemessage.
4.
41discardmessageindicator:Informationsenttoinformanothernodetodiscardtherelatedmessage,duetocompatibilityreasons.
4.
42discardparameterindicator:Informationsenttoinformanothernodetodiscardtherelatedparameter,duetocompatibilityreasons.
4.
43echocontroldeviceindicator:Informationindicatingwhetherornotanechocontroldeviceisincludedintheconnection.
4.
44ellipseontheellipsoidshapedescription:Informationthatdescribesthesetofpointsontheellipsoidthatliewithinthedefiningellipse.
Theellipseischaracterizedbythecoordinatesofanellipsoidpoint(theorigin),themajorandminorradiioftheellipsermajorandrminor,andtheorientationoftheellipseθwhichdescribestheanglebetweenthemajorradiusoftheellipseandNorth,asshowninFigure1.
Similartotheellipsoidpoint,thisshapedescriptioncanbeusedtoindicatepointsontheEarth'ssurface,ornearthesurface.
T11103460-99θrminorrmajorFigure1/Q.
762–Descriptionofanellipseontheellipsoid4.
45ellipsoidcirclesectorshapedescription:Informationthatdescribesthesetofpointsontheellipsoidthatliewithinthedefiningcirclesector.
Thecirclesectorischaracterizedbythecoordinatesofanellipsoidpoint(theorigin),theradiusofthecirclesectorr,beingthegeodesicdistanceoverthesurfaceoftheellipsoid,theoffsetangle(θ)betweenthefirstdefiningradiusofthesectorandNorth,andtheincludedangle(β)beingtheanglebetweenthefirstandseconddefiningradius,asshowninFigure2.
T11103470-99βθrFigure2/Q.
762–Descriptionofacirclesector16ITU-TQ.
762(12/1999)4.
46ellipsoidpointshapedescription:InformationthatdescribesapointonthesurfaceoftheWGS-84ellipsoidthatconsistsoflatitudeandlongitude.
Inpractice,suchadescriptioncanbeusedtorefertoapointonEarth'ssurface,orclosetoEarth'ssurface,withthesamelongitudeandlatitude.
Figure3illustratesapointonthesurfaceoftheellipsoidanditscoordinates.
T11103480-99LongitudeLatitudeFigure3/Q.
762–DescriptionofanellipsoidpointastwocoordinatesThelatitudeistheanglebetweentheequatorialplaneandtheperpendiculartotheplanetangenttotheellipsoidsurfaceatthepoint.
PositivelatitudescorrespondtotheNorthhemisphere.
Thelongitudeistheanglebetweenthehalf-planedeterminedbytheGreenwichmeridianandthehalf-planedefinedbythepointandthepolaraxis,measuredEastward.
4.
47ellipsoidpointwithuncertaintyshapedescription:Informationthatdescribesapointthatischaracterizedbythecoordinatesofanellipsoidpoint(theorigin)andadistancer.
Itdescribesthesetofpointsontheellipsoidwhichareatadistancefromtheoriginlessthanorequaltor,thedistancebeingthegeodesicdistanceovertheellipsoid,i.
e.
theminimumlengthofapathstayingontheellipsoidandjoiningthetwopoints,asshowninFigure4.
Similartotheellipsoidpoint,thiscanbeusedtoindicatepointsontheEarth'ssurface,orneartheEarth'ssurface,ofsamelatitudeandlongitude.
Thetypicaluseofthisshapeistoindicateapointwhenitspositionisknownonlywithalimitedaccuracy.
T11103490-99rFigure4/Q.
762–Descriptionofuncertainty4.
48encapsulatedapplicationinformation:Applicationinformationrequiredtobetransportedbytheapplicationtransportmechanism.
ITU-TQ.
762(12/1999)174.
49encodingscheme:Informationsenttoindicatethecodingtypeforthedigitinformation,e.
g.
BCD-coded.
4.
50end-to-endinformationindicator:Informationsentineitherdirectionindicatingwhetherornotthesendingexchangehasfurthercallinformationavailableforend-to-endtransmission.
Intheforwarddirection,anindicationthatend-to-endinformationisavailablewillimplythatthedestinationexchangemayobtaintheinformationbeforealertingthecalledparty.
4.
51end-to-endmethodindicator:Informationsentineitherdirectionindicatingtheavailablemethods,ifany,forend-to-endtransferofinformation.
4.
52errorcode:TheErrorcodeelementcontainsthereasonwhyanoperationcannotbecompletedsuccessfully.
ItispresentonlyinaReturnErrorcomponent.
Aswithoperations,errorsmaybelocalorglobal.
Theseerrorsandassociatedparametersaredefinedinrelevantsupplementaryservicespecifications.
4.
53eventindicator:Informationindicatingthetypeofeventwhichcausedacallprogressmessagetobesent.
4.
54eventpresentationrestrictedindicator:Informationsentinthebackwarddirectionindicatingthattheeventshouldnotbepresentedtothecallingparty.
4.
55extensionindicator:Informationsentineveryoctetinamulti-octetparameterfieldwithvariablelength,indicatingwhethertheoctetisthelastoneorisfollowedbyanotherone.
4.
56GVNSusergroupidentification:InformationsentintheforwarddirectionthatuniquelyidentifiestheGVNScustomer.
4.
57featurecode:Informationsentineitherdirectiontoinvoke,accept,orrejectaspecificactionforasupplementaryservice.
4.
58filler:Anumberofbitsusedtocompleteapartiallyusedoctettofulloctetlength.
Mainlythefillerisusedinnumberparametersthatarecarryingoddnumberofdigits,wheretheremainingfourbitsinthelastoctethavenodigitinformation.
4.
59holdingindicator:Informationsentinthebackwarddirectionindicatingthatholdingoftheconnectionisrequested.
4.
60holdprovidedindicator:Informationsentintheforwarddirectionindicatingthattheconnectionwillbeheldafterthecallingorcalledpartyhasattemptedtorelease.
4.
61in-bandinformationindicator:Informationsentinthebackwarddirectionindicatingthatin-bandinformationoranappropriatepatternisnowavailable.
4.
62includedangle:Informationidentifyingtheincludedangleofacirclesector.
4.
63incomingechocontroldevicerequestindicator:Informationsenttorequesttheactivationordeactivationofanincomingechocontroldevice.
4.
64incomingechocontroldeviceinformationindicator:Informationsenttoinformwhetheranincomingechocontroldevicehasbeenincludedornotand,ifnot,whetherthedeviceisavailableornot.
4.
65instructionindicator:Informationindicatingthereactionstobetakenifanunrecognizedmessageorunrecognizedparameterisreceived.
4.
66internalnetworknumber:Informationsenttothedestinationexchangeforspecificnumbers,e.
g.
roamingnumbersindicatingwhetherornotthenumbercontainedintheparameterisgeneratedbythenetwork.
4.
67interworkingindicator:InformationsentineitherdirectionindicatingwhetherornotSignallingSystemNo.
7isusedinallpartsofthenetworkconnection.
18ITU-TQ.
762(12/1999)4.
68interworkingtoredirectionindicator:Informationusedtoindicatewhetherinterworkingfrompivotrouteingtoredirectionisallowed.
4.
69invokeID:AnInvokeIDisusedasareferencenumbertoidentifyuniquelyanoperationinvocation.
ItispresentintheInvokecomponentandinanyreplytotheInvoke(ReturnResult,ReturnErrororReject),enablingthereplytobecorrelatedwiththeinvoke.
4.
70invokingpivotreason:Informationsentinthepivotrouteingbackwardinformationparameterorthepivotrouteingforwardinformationparameterthatconveysthereasonforinvokingthepivotfunction.
4.
71invokingredirectreason:Informationsentintheredirectbackwardinformationparameterortheredirectforwardinformationparameterthatconveysthereasonforinvokingtheredirectionfunction.
4.
72ISDNaccessindicator:InformationsentineitherdirectionindicatingwhetherornottheaccesssignallingprotocolisISDN.
4.
73ISDNuserpartindicator:InformationsentineitherdirectiontoindicatethattheISDNuserpartisusedinallprecedingpartsofthenetworkconnection.
Whensentinthebackwarddirection,theprecedingpartsarethosetowardsthecalledparty.
4.
74ISDNuserpartpreferenceindicator:InformationsentintheforwarddirectionindicatingwhetherornottheISDNuserpartisrequiredorpreferredinallpartsofthenetworkconnection.
4.
75length(ofeachcomponentorofaninformationelement):Binarycodedinformationindicatingthenumberofoctetsinacomponentorinformationelement.
Thevaluedoesnotincludetheparametername,lengthorendofoptionalparametersoctets.
4.
76linkedID:ALinkedIDisincludedinanInvokecomponentbyanodewhenitrespondstoanoperationinvocationwithalinkedoperationinvocation.
ThenodereceivingtheLinkedIDusesitforcorrelationpurposesinthesamewaythatitusestheInvokeIDinReturnResult,ReturnErrorandRejectcomponents.
4.
77localreference:Informationsentintheconnectionrequest,indicatingthelocalreferenceallocatedbythesignallingconnectioncontrolparttoanend-to-endconnection.
4.
78latitudesign:InformationthatindicatesthegeodeticlocationofthecallingpartyintermsofnorthernorsouthernHemisphere.
4.
79location:Informationsentineitherdirectionindicatingwhereanevent(e.
g.
release)wasgenerated.
DefinitionofeachlocationvalueisgiveninITU-TRecommendationQ.
850[8].
4.
80locationpresentationrestrictedindicator:Informationthatindicatesthatthegeodeticlocationinformationisnottobepresentedtoapublicnetworkuser,butcanbepassedtoanotherpublicnetwork.
Itmayalsobeusedtoindicatethatthegeodeticlocationcannotbeascertained.
4.
81LookForBusy(LFB):InformationsentintheforwarddirectiontoindicatewhethertheLFBoptionisallowedorifthepathforthecallisreserved.
4.
82majorradius:Informationidentifyingthesizeofthemajoraxisofanellipseontheellipsoidshapedescription.
4.
83minorradius:Informationidentifyingthesizeoftheminoraxisofanellipseontheellipsoidshapedescription.
4.
84MLPPservicedomain:InformationsentintheforwarddirectiontoidentifythespecificMLPPservicedomainsubscribedtobythecallinguser.
4.
85MLPPuserindicator:InformationsentinthebackwarddirectiontoindicatethatthecalleduserisanMLPPuser.
ITU-TQ.
762(12/1999)194.
86moreinstructionindicators:Octetsreservedforfutureuseforenhancementoftheinstructionindicators.
4.
87national/internationalcallindicator:Informationsentintheforwarddirectionindicatinginthedestinationnationalnetworkwhetherthecallhastobetreatedasaninternationalcallorasanationalcall.
4.
88natureofaddressindicator:Informationsentinassociationwithanaddressindicatingthenatureofthataddress,e.
g.
ISDNinternationalnumber,ISDNnationalsignificantnumber,orISDNsubscribernumber.
4.
89networkdiscardindicator:Thisindicatorindicatesthatuser-to-userinformationincludedinthecallcontrolmessagehasbeendiscardedbythenetwork.
4.
90networkidentificationplan:Informationsenttoindicatetheidentificationplanforidentifyingthenetwork,e.
g.
ITU-TRecommendationX.
121[10]orE.
212[11](DNICorMNIC).
4.
91networkidentification:Informationsenttoidentifyanetwork.
4.
92networkidentity:Informationsenttoidentifythenetworkwhichadministersthesupplementaryservice.
4.
93networkspecificfacilityindicator:Informationidentifyingspecificfacilitiesrequestedorprovided.
4.
94notificationindicator:Informationsentineitherdirectionintendedtoprovidesupplementaryservicenotificationtoauser.
4.
95notificationsubscriptionoption:Informationsentinthebackwarddirectionindicatingthatthediversionwithorwithoutredirectionnumbercanbepresentedtothecallinguser.
4.
96Nthupgradedparametername:InformationidentifyingtheNthparameterwhichhasbeenupgradedforcompatibilitypurposes.
4.
97numberincompleteindicator:Informationsenttoindicatewhetherthedeliverednumberiscompleteorincomplete.
4.
98numberportabilitystatusindicator:Informationsentintheforwarddirectionidentifyingwhethernumberportabilitycheckshavetakenplaceatanexchangeinthecallpathandalsowhetherthecallednumberisportedornon-ported.
4.
99numberqualifierindicator:Informationsentinassociationwithagenericnumber,qualifyingthenumberthatistransferred,e.
g.
anetworkspecificnumberoranumberrelatedtoaspecificsupplementaryservice.
4.
100numberingplanindicator:Informationsentinassociationwithanumberindicatingthenumberingplanusedforthatnumber(e.
g.
ISDNnumber,Telexnumber).
4.
101odd/evenindicator:Informationsentinassociationwithanaddress,indicatingwhetherthenumberofaddresssignalscontainedintheaddressisevenorodd.
4.
102offset:InformationidentifyingtheoffsetofacirclesectorfromNorth.
4.
103operationcode:TheOperationcodeelementindicatesthepreciseoperationtobeinvoked,andispresentinanInvokecomponenttype.
ItisalsopresentintheReturnResultcomponentiftheresultcontainsparameters.
Theoperationmaybealocaloperationoraglobaloperation.
AlocaloperationcanbeusedinoneASEonly.
ThesameglobaloperationcanbeusedinseveraldifferentASEs.
Theactualoperationcodes,thedefinitionoftheoperationsandtheirassociatedparameters,aredefinedinrelevantsupplementaryservicespecifications.
4.
104orientation:Informationidentifyingtheorientationofanellipseontheellipsoid.
20ITU-TQ.
762(12/1999)4.
105originalredirectionreason:Informationsentineitherdirectionindicatingthereasonwhythecallwasoriginallyredirected.
4.
106originatingparticipatingserviceprovideridentification:InformationsentintheforwarddirectionthatuniquelyidentifiestheparticipatingserviceproviderthatprovidescustomeraccesstoGVNStothecallinguser/interface.
4.
107outgoingechocontroldevicerequestindicator:Informationsenttorequesttheactivationordeactivationofanoutgoingechocontroldevice.
4.
108outgoingechocontroldeviceinformationindicator:Informationsenttoinformwhetheranoutgoingechocontroldevicehasbeenincludedornotand,ifnot,whetherthedeviceisavailableornot.
4.
109parametertag:Informationidentifyingthetypeofparameterusedinremoteoperations.
4.
110passonnotpossibleindicator:Informationsenttoinformanothernodeonwhatactiontotakeif"passon"wasrequestedduetocompatibilityreasonbut"passon"wasnotpossibleduetointerworkingwithpre-ISUP1992signalling.
4.
111performingpivotindicator:Informationsentinthepivotrouteingforwardinformationparameterthatindicatesawillingnesstoperformthepivotfunctionforaparticularreason.
4.
112performingredirectindicator:Informationsentintheredirectforwardinformationparameterthatindicatesawillingnesstoperformredirectionforaparticularreason.
4.
113pivotpossibleindicator:Informationusedtoindicatethecallstateuntilwhichthepivotrouteingispossible.
4.
114pointwithaltitudeanduncertaintyshapedescription:Informationthatdescribesapointthatischaracterizedbythecoordinatesofanellipsoidpoint,anuncertaintydistancer,analtitudeaandanaltitudeuncertaintyh.
Itdescribesthesetofpointswhichareataverticaldistancehorlessfromtheorigin.
Theoriginisapointataltitudeaaboveanellipsoidpointwithuncertainty(see4.
47)asshowninFigure5.
T11103500-99hraLongitudeLatitudeFigure5/Q.
762–DescriptionofapointwithaltitudeanduncertaintyITU-TQ.
762(12/1999)214.
115polygonshapedescription:Informationthatdescribesanarbitraryshapethatisdescribedbyanorderedseriesofpoints(intheexamplepicturedinFigure6,AtoE).
Theminimumnumberofpointsallowedisthree,andthemaximumnumberofpointsallowedis15.
Thepointsshallbeconnectedintheorderthattheyaregiven.
Aconnectinglineisdefinedasthelineovertheellipsoidjoiningthetwopointsandofminimumdistance(geodesic).
Thelastpointisconnectedtothefirst.
Thelistofpointsmustrespectanumberofconditions:–aconnectinglineshallnotcrossanotherconnectingline;–twosuccessivepointsmustnotbediametricallyopposedontheellipsoid.
ThedescribedareaissituatedtotherightofthelineswiththedownwarddirectionbeingtowardtheEarth'scentreandtheforwarddirectionbeingfromapointtothenext.
T11103510-99BAEDCFigure6/Q.
762–Descriptionofapolygon4.
116precedencelevel:Informationsentintheforwarddirectiontoindicatethepriorityofthecall.
4.
117problemcode:TheProblemcodeelementusedinremoteoperationscontainsthereasonfortherejectionofacomponentandonesuchelementispresentinaRejectcomponent.
Fourproblemcodeelementsaredefined,viz.
:a)GeneralProblemThiselementcontainsoneoftheproblemcodeswhichapplytotheRemoteOperationcapabilityofISUPingeneralandwhichdonotrelatetoanyspecificcomponenttype.
AllofthesearegeneratedbytheRemoteOperationcapabilityofISUP.
Theyare:–UnrecognizedComponent:Thecomponenttypeisnotrecognizedasbeingoneofthosedefinedin4.
118describingcomponenttypes.
–MistypedComponent:TheelementalstructureofacomponentdoesnotconformtothestructureofthatcomponentasdefinedinITU-TRecommendationQ.
763[1].
–BadlyStructuredComponent:ThecontentsofthecomponentdonotconformtotheencodingrulesdefinedinITU-TRecommendationQ.
763[1].
b)InvokeproblemThiselementcontainsoneoftheproblemcodesthatrelateonlytotheInvokecomponenttype.
Theyare:–DuplicateInvokeID:TheInvokeIDisalreadyinusebyapreviouslyinvokedoperation.
22ITU-TQ.
762(12/1999)–Unrecognizedoperation:TheoperationcodevalueisnotoneofthoseusedbytheASE.
–MistypedParameter:Signifiesthatthetypeofinvokeparameterisnotthatagreedbetweentheusers.
–ResourceLimitation:Sufficientresourcesarenotavailabletoperformtherequestedoperation.
–InitiatingRelease:Therequestedoperationcannotbeinvokedbecausetheassociationisabouttobereleased.
–UnrecognizedLinkedID:TheLinkedIDdoesnotcorrespondtoapreviouslyinvokedoperation.
–LinkedResponseUnexpected:TheoperationreferredtobytheLinkedIDisnotanoperationforwhichlinkedinvokesareallowed.
–UnexpectedLinkedOperation:TheoperationreferredtobytheLinkedIDdoesnotallowthislinkedoperation.
c)ReturnResultProblemThiselementcontainsoneoftheproblemcodesthatrelateonlytotheReturnResultcomponenttype.
Theyare:–UnrecognizedInvokeID:NooperationwiththespecifiedInvokeIDisinprogress.
–ReturnResultUnexpected:Theinvokedoperationdoesnotreportsuccess.
–MistypedParameter:SignifiesthatthetypeofReturnResultparameterisnotthatagreedbetweentheusers.
d)ReturnErrorProblemThiselementcontainsoneoftheproblemcodesthatrelateonlytotheReturnErrorcomponenttype.
Theyare:–UnrecognizedInvokeID:NooperationwiththespecifiedInvokeIDisinprogress.
–ReturnErrorUnexpected:Theinvokedoperationdoesnotreportfailure.
–UnrecognizedError:Thereportederrorisnotoneofthosedefinedfortheinvokedoperation.
–UnexpectedError:Thereceivederrorisnotoneofthosethattheinvokedoperationmayreport.
–MistypedParameter:SignifiesthatthetypeofErrorparameterisnotthatagreedbetweentheusers.
4.
118protocolclass:Informationindicatingtheprotocolclassrequestedbythesignallingconnectioncontrolpartfortheend-to-endconnection.
4.
119protocolprofile:InformationsentineitherdirectiontoindicatetheprotocolusedintheRemoteOperationsparameter.
ITU-TQ.
762(12/1999)234.
120protocolcontrolindicator:Informationconsistingoftheend-to-endmethodindicator,theinterworkingindicator,theend-to-endinformationindicator,theSCCPmethodindicatorandtheISDNuserpartindicatorsentineitherdirectiontodescribethesignallingcapabilitieswithinthenetworkconnection.
4.
121radius:Informationidentifyingthesizeoftheradiusoftheassociatescirclesectorshapedescription.
4.
122range:Informationsentinacircuitgroupsupervisionmessage(e.
g.
circuitgroupblocking)toindicatetherangeofcircuitsaffectedbytheactioninthemessage.
4.
123redirectpossibleindicator:Informationsentintheforwarddirectiontoindicatethatatleastoneexchangeintheconnectionisabletoredirectthecallandthecallstatesinwhichtheprocedureispossible.
4.
124redirectingindicator:Informationsentineitherdirectionindicatingwhetherthecallhasbeendivertedorreroutedandwhetherornotpresentationofredirectioninformationtothecallingpartyisrestricted.
4.
125redirectingreason:Informationsentineitherdirectionindicating,inthecaseofcallsundergoingredirection,thereasonwhythecallhasbeenredirected.
4.
126redirectioncounter:Informationsentineitherdirectionindicatingthenumberofredirectionswhichhaveoccurredonacall.
4.
127releasecallindicator:Informationsenttoinformanothernodetoreleasethecallornot,bycompatibilityreasons,iftherelatedmessageorparameterisunrecognized.
4.
128returntoinvokingexchangecallidentifier:Informationusedbythereturntoinvokingexchangefunctiontoidentifyacall.
4.
129returntoinvokingexchangeduration:Informationsentinthebackwarddirectiontoindicatehowlonginformationwillberetainedattheinvokingexchangetofacilitatethereturntoinvokingexchangefunction.
4.
130returntoinvokingexchangepossible:Informationsentintheforwarddirectiontoindicatethecapabilitytomakeuseofthereturntoinvokingexchangecallidentifierandreturntoinvokingexchangeduration.
4.
131routeinglabel:Informationprovidedtothemessagetransferpartforthepurposeofmessagerouteing(see2.
2/Q.
704[12]).
4.
132satelliteindicator:Informationsentintheforwarddirectionindicatingthenumberofsatellitecircuitsintheconnection.
4.
133SCCPmethodindicator:InformationsentineitherdirectionindicatingtheavailableSCCPmethods,ifany,forend-to-endtransferofinformation.
4.
134screeningindicator:Informationsentineitherdirectiontoindicatewhethertheaddress/locationinformationwasprovidedbytheuserornetwork.
4.
135segmentationlocalreference(SLR):AuniquevaluetoacallusedtoassociatesegmentsinanAPMsegmentationprocedure.
4.
136sendnotificationindicator:Informationsenttoinformanothernodetosendnotification,duetocompatibilityreason,iftherelatedmessageorparameterisunrecognized.
4.
137sequence:Thesequenceisanorderedsetusedinremoteoperations.
4.
138sequenceindicator:Usedtoindicatethebeginning(firstsegment)ofanAPMsegmentationproceduresequence.
24ITU-TQ.
762(12/1999)4.
139set:TheSetelementisusedinremoteoperationstocontainasetofinformationelementsaccompanyingacomponent.
Itisrequiredinthecaseofmorethanoneinformationelementsbeingincludedinacomponent.
Theinformationelementsthemselvesaredefinedinrelevantsupplementaryservicespecifications.
4.
140shapedescription:Informationthatdescribesthegeodeticlocationofthecallingparty.
4.
141signallingpointcode:Informationidentifyingthesignallingpoint.
4.
142simplesegmentationindicator:Informationsentineitherdirectiontoindicatethatadditionalinformationwillbeforwardedinasegmentationmessage(unsolicited).
4.
143solicitedinformationindicator:Informationsentinaninformationmessagetoindicatewhetherornotthemessageisaresponsetoaninformationrequestmessage.
4.
144status:Informationsentinacircuitgroupsupervisionmessage(e.
g.
circuitgroupblocking)toindicatethespecificcircuits,withintherangeofcircuitsstatedinthemessage,thatareaffectedbytheactionspecifiedinthemessage.
4.
145T9timerindicator:InformationsentintheforwarddirectiontoinformsucceedingexchangesthatonrequeststoppingofthetimerT9ispossible.
4.
146T9timerinstructionindicator:Informationsentinthebackwarddirectiontoinstructprecedingexchangestostopornottostart,respectively,thetimerT9.
4.
147temporaryalternativerouteingindicator:Informationsentintheforwarddirectionindicatingthatacallisatemporaryalternativerouteingcontrolledcall.
4.
148terminatingaccessindicator:InformationsentinthebackwarddirectionthatidentifiesthetypeofterminatingaccessfromaGVNSterminatingparticipatingserviceprovideractuallyusedtocompletethecall.
4.
149terminatingnetworkrouteingnumber:AnumbersentintheforwarddirectionwhichaterminatingfunctionalentitymayusetocompleteaGVNScalltoon-netlocations.
4.
150throughconnectionindicator:Informationsentintheforwarddirectiontoinformsucceedingexchangesthatonrequestthrough-connectionofthetransmissionpathinbothdirectionsispossible.
4.
151throughconnectioninstructionindicator:Informationsentinthebackwarddirectiontoinstructprecedingexchangestothrough-connectthetransmissionpathinbothdirections.
4.
152transitatintermediateexchangeindicator:Informationsenttoinformatransitnode(typeB),whetheritshallreactontherestoftheinstructionindicatorsornot,iftherelatedmessageorparameterisunrecognized.
4.
153type:Informationsentineitherdirectiontoindicatewhetherthemessageisarequestoraresponse.
4.
154typeofdigits:Informationsentinassociationwithagenericdigittoindicatethetypeofdigit,e.
g.
authorizationcode.
4.
155typeofnetworkidentification:InformationsenttoinformwhethertheidentificationofanetworkisbyITU-Tstandardizationidentificationorbynationalnetworkidentification.
4.
156typeofshape:Informationthatindicatestheformatofthegeodeticlocationinformationheldintheassociatedshapedescription.
4.
157uncertaintycode:Informationthatindicatesthelevelofuncertaintyinherenttotheassociatedlongitude/latitudeinformation.
Geneva,2001SERIESOFITU-TRECOMMENDATIONSSeriesAOrganizationoftheworkofITU-TSeriesBMeansofexpression:definitions,symbols,classificationSeriesCGeneraltelecommunicationstatisticsSeriesDGeneraltariffprinciplesSeriesEOverallnetworkoperation,telephoneservice,serviceoperationandhumanfactorsSeriesFNon-telephonetelecommunicationservicesSeriesGTransmissionsystemsandmedia,digitalsystemsandnetworksSeriesHAudiovisualandmultimediasystemsSeriesIIntegratedservicesdigitalnetworkSeriesJTransmissionoftelevision,soundprogrammeandothermultimediasignalsSeriesKProtectionagainstinterferenceSeriesLConstruction,installationandprotectionofcablesandotherelementsofoutsideplantSeriesMTMNandnetworkmaintenance:internationaltransmissionsystems,telephonecircuits,telegraphy,facsimileandleasedcircuitsSeriesNMaintenance:internationalsoundprogrammeandtelevisiontransmissioncircuitsSeriesOSpecificationsofmeasuringequipmentSeriesPTelephonetransmissionquality,telephoneinstallations,locallinenetworksSeriesQSwitchingandsignallingSeriesRTelegraphtransmissionSeriesSTelegraphservicesterminalequipmentSeriesTTerminalsfortelematicservicesSeriesUTelegraphswitchingSeriesVDatacommunicationoverthetelephonenetworkSeriesXDatanetworksandopensystemcommunicationsSeriesYGlobalinformationinfrastructureandInternetprotocolaspectsSeriesZLanguagesandgeneralsoftwareaspectsfortelecommunicationsystems