SIST EN 300 957 V7.0.1:2003

• Abstract:

  Upgrade from Phase 2+ to Release 1998

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.070.50 - Global System for Mobile Communication (GSM)
• 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 300 957 V7.0.1 (2000-01) - Digital cellular telecommunications system (Phase 2+) (GSM); Unstructured Supplementary Service Data (USSD); Stage 3 (GSM 04.90 version 7.0.1 Release 1998)

Overview

SIST EN 300 957 V7.0.1:2003 is a Slovenian national standard, identical to the European EN 300 957 Version 7.0.1. Issued by the Slovenski inštitut za standardizacijo (SIST), this standard forms part of the GSM (Global System for Mobile Communications) suite, known specifically for regulating Unstructured Supplementary Service Data (USSD) operations. The document describes the technical specifications for Stage 3 USSD in digital cellular telecommunications systems, upgrading prior requirements to align with GSM Release 1998 (Phase 2+).

USSD is crucial in GSM networks, enabling real-time, session-based communication between mobile devices and applications on the operator side. This document ensures cross-compatibility and interoperability among network equipment and mobile stations for USSD-related services.

Key Topics

• USSD Operation Classes: The standard details two main USSD operation types:

  • Network-initiated USSD operations
  • Mobile-initiated USSD operations

• Session Procedures: Requires clear procedures for initiating, maintaining, and clearing USSD sessions, including request, notification, continuation, and error handling.

• Cross-Phase Compatibility: Outlines backward compatibility and interworking between Phase 2+ and previous protocol versions, mitigating issues in mixed-version network environments.

• Error Handling: Specifies error response behavior for both mobile stations and network when a USSD request fails or is unsupported, referencing GSM 04.80 for error codes.

• Abbreviations and References: Relies on common GSM terminology and incorporates references to related GSM specifications for abbreviations, coding, and interface protocols.

Applications

SIST EN 300 957 V7.0.1:2003 provides a foundation for seamless USSD functionality within GSM networks. Its practical value lies in supporting operators, equipment manufacturers, and software developers to deliver consistent mobile user experiences across devices and network nodes. Key applications include:

• Mobile financial services: Enabling secure mobile banking, balance inquiries, and airtime top-ups via real-time, code-based USSD commands.
• Customer self-service: Supporting user-driven account management, subscriptions, and information retrieval using mobile devices.
• Network management: Allowing operators to send notifications, collect diagnostic data, or push updates through standardized USSD sessions.
• Interoperability: Ensuring that devices and infrastructure from different vendors can exchange USSD messages reliably within GSM Release 1998 specifications.

By adhering to this standard, organizations ensure their systems support essential supplementary GSM services, enhancing overall mobile service delivery and user satisfaction.

Related Standards

For comprehensive implementation and integration, the following standards complement SIST EN 300 957 V7.0.1:2003:

• GSM 01.04: Digital cellular telecommunications system (Phase 2+); Abbreviations and acronyms
• GSM 04.08: Mobile radio interface layer 3 specification, defining call control and mobility management
• GSM 04.80: Supplementary services specification, detailing message formats and coding
• EN 300 957: The European adoption of this standard, crucial for multi-country deployment within the EU

These references cover protocol definitions, message encoding, and system behaviors necessary for proper integration of USSD operations in GSM networks.

Implementing SIST EN 300 957 V7.0.1:2003 strengthens compliance, interoperability, and quality of service for all stakeholders involved in digital cellular telecommunications using GSM Phase 2+ systems.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digital cellular telecommunications system (Phase 2+) (GSM); Unstructured Supplementary Service Data (USSD); Stage 3 (GSM 04.90 version 7.0.1 Release 1998)33.070.50Globalni sistem za mobilno telekomunikacijo (GSM)Global System for Mobile Communication (GSM)ICS:Ta slovenski standard je istoveten z:EN 300 957 Version 7.0.1SIST EN 300 957 V7.0.1:2003en01-december-2003SIST EN 300 957 V7.0.1:2003SLOVENSKI
STANDARD
ETSIEN300957V7.0.1(2000-01)EuropeanStandard(Telecommunicationsseries)Digitalcellulartelecommunicationssystem(Phase2+);UnstructuredSupplementaryServiceData(USSD);Stage3(GSM04.90version7.0.1Release1998)GLOBALSYSTEMFORMOBILECOMMUNICATIONSRSIST EN 300 957 V7.0.1:2003

ETSIETSIEN300957V7.0.1(2000-01)2(GSM04.90version7.0.1Release1998)ReferenceREN/SMG-030490Q7KeywordsDigitalcellulartelecommunicationssystem,GlobalSystemforMobilecommunications(GSM)ETSIPostaladdressF-06921SophiaAntipolisCedex-FRANCEOfficeaddress650RoutedesLucioles-SophiaAntipolisValbonne-FRANCETel.:[phone]Fax:[phone]SiretN°34862356200017-NAF742CAssociationàbutnonlucratifenregistréeàlaSous-PréfecturedeGrasse(06)N°7803/[e-mail]ETSIdeliverablecanbedownloadedfromhttp://www.etsi.orgIfyoufinderrorsinthepresentdocument,sendyourcommentto:[e-mail]Ideliverablemaybemadeavailableinmorethanoneelectronicversionorinprint.Inanycaseofexistingorperceiveddifferenceincontentsbetweensuchversions,thereferenceversionisthePortableDocumentFormat(PDF).Incaseofdispute,thereferenceshallbetheprintingonETSIprintersofthePDFversionkeptonaspecificnetworkdrivewithinETSISecretariat.CopyrightNotificationNopartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute2000.Allrightsreserved.SIST EN 300 957 V7.0.1:2003

ETSIETSIEN300957V7.0.1(2000-01)3(GSM04.90version7.0.1Release1998)ContentsIntellectualPropertyRights.4Foreword.41Scope.52References.53Abbreviations.54Crossphasecompatibility.55Networkinitiatedunstructuredsupplementaryservicedataoperations.65.1Unstructuredsupplementaryservicedatarequest.65.1.1Normaloperation.65.2Unstructuredsupplementaryservicedatanotification.85.2.1Normaloperation.86Mobileinitiatedunstructuredsupplementaryservicedataoperations.106.1Normaloperation.106.2Crossphasecompatibility.126.2.1Networkonlysupportsprotocolversion1ofunstructuredsupplementaryservicedataoperations.126.2.2Mobilestationonlysupportsprotocolversion1ofunstructuredsupplementaryservicedataoperations.12AnnexA(informative):ChangeRequestHistory.13History.14SIST EN 300 957 V7.0.1:2003

ETSIETSIEN300957V7.0.1(2000-01)4(GSM04.90version7.0.1Release1998)IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.TheinformationpertainingtotheseessentialIPRs,ifany,ispubliclyavailableforETSImembersandnon-members,andcanbefoundinSR000314:"IntellectualPropertyRights(IPRs);Essential,orpotentiallyEssential,IPRsnotifiedtoETSIinrespectofETSIstandards",whichisavailablefromtheETSISecretariat.LatestupdatesareavailableontheETSIWebserver(http://www.etsi.org/ipr).PursuanttotheETSIIPRPolicy,noinvestigation,includingIPRsearches,hasbeencarriedoutbyETSI.NoguaranteecanbegivenastotheexistenceofotherIPRsnotreferencedinSR000314(ortheupdatesontheETSIWebserver)whichare,ormaybe,ormaybecome,essentialtothepresentdocument.ForewordThisEuropeanStandard(Telecommunicationsseries)hasbeenproducedbytheSpecialMobileGroup(SMG).Thepresentdocumentspecifiesthestage3descriptionoftheUnstructuredSupplementaryServiceData(USSD)operationswithinthedigitalcellulartelecommunicationssystem.ThespecificationfromwhichthepresentdocumenthasbeenderivedwasoriginallybasedonCEPTdocumentation,hencethepresentationofthepresentdocumentmaynotbeentirelyinaccordancewiththeETSI/PNErules.ThecontentsofthepresentdocumentissubjecttocontinuingworkwithinSMGandmaychangefollowingformalSMGapproval.ShouldSMGmodifythecontentsofthepresentdocumentitwillbere-releasedwithanidentifyingchangeofreleasedateandanincreaseinversionnumberasfollows:Version7.x.ywhere:7indicatesRelease1998ofGSMPhase2+.xtheseconddigitisincrementedforallchangesofsubstance,i.e.technicalenhancements,corrections,updates,etc.ythethirddigitisincrementedwheneditorialonlychangeshavebeenincorporatedinthespecification.NationaltranspositiondatesDateofadoptionofthisEN:31December1999DateoflatestannouncementofthisEN(doa):31March2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):30September2000DateofwithdrawalofanyconflictingNationalStandard(dow):30September2000SIST EN 300 957 V7.0.1:2003

ETSIETSIEN300957V7.0.1(2000-01)5(GSM04.90version7.0.1Release1998)1ScopeThepresentdocumentgivesthestage3descriptionoftheUnstructuredSupplementaryServiceData(USSD)operations.Thegroupofunstructuredsupplementaryservicedataoperationsisdividedintotwodifferentclasses:-Networkinitiatedunstructuredsupplementaryservicedataoperations(clause5);-Mobileinitiatedunstructuredsupplementaryservicedataoperations(clause6).2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.•Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.•Foraspecificreference,subsequentrevisionsdonotapply.•Foranon-specificreference,thelatestversionapplies.•Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.•ForthisRelease1998document,referencestoGSMdocumentsareforRelease1998versions(version7.x.y).[1]GSM01.04:"Digitalcellulartelecommunicationssystem(Phase2+);Abbreviationsandacronyms".[2]GSM04.08:"Digitalcellulartelecommunicationssystem(Phase2+);Mobileradiointerfacelayer3specification".[3]GSM04.80:"Digitalcellulartelecommunicationssystem(Phase2+);Mobileradiointerfacelayer3supplementaryservicesspecification;Formatsandcoding".3AbbreviationsAbbreviationsusedinthepresentdocumentarelistedinGSM01.04.4CrossphasecompatibilityForthemobileinitiatedUSSDoperations,anumberofchangesexistbetweenthepresentdocumentandtheprotocolversion1specification.Fortheseoperationsthemainbodyofthepresentdocumentassumesthatallnetworkentitiescomplywiththisversionoftheservice.InthiscaseanadditionalsubclausedefinestheadditionalrequirementsforwhenoneormorenetworkentitiesortheMobileStation(MS)complieswiththeprotocolversion1specificationsfortheUSSDoperations.SIST EN 300 957 V7.0.1:2003

ETSIETSIEN300957V7.0.1(2000-01)6(GSM04.90version7.0.1Release1998)5Networkinitiatedunstructuredsupplementaryservicedataoperations5.1Unstructuredsupplementaryservicedatarequest5.1.1NormaloperationThenetworkinvokesanUSSDrequestbysendingaREGISTERmessagecontainingaUnstructuredSS-RequestinvokecomponenttotheMS.TheMSshallrespondtotherequestbysendingaFACILITYmessagecontainingtheuser'smobilesubscriber'sresponseinareturnresultcomponent.ThenetworkshallpassthedatareceivedintheresponsetotheapplicationhandlingUSSDoperationsandshallwaitfortheresponseoftheapplication.Theapplicationmayeithercontinueorterminatethedialogue.Whentheapplicationcontinuesthedialogue,itmayinitiateanotherUSSDoperationbysendingaFACILITYmessage(seefigure5.2).TheoperationmayeitherbeanUSSDrequestornotification(seesubclause5.1.2).Whentheapplicationterminatesthedialogue,thenetworkshallclearthetransactionbysendingaRELEASECOMPLETEmessage.TheMSmayalsoclearthetransactionatanytimebysendingaRELEASECOMPLETEmessageupontherequestoftheuser.IftheMSisunabletoprocesstherequestreceivedfromthenetwork,itshallreturnanerrorindicationbysendingaFACILITYmessagecontainingareturnerrorcomponent.ErrorvaluesarespecifiedinGSM04.80.WhentheMSreceivesanUSSDoperationinparalleltoanycallindependentsupplementaryservicetransaction,itshallrespondwithareturnerrorcomponentinaRELEASECOMPLETEmessage,containingthe"USSD-Busy"errorasspecifiedinGSM04.80,toindicatethefailureinhandlingaparallelUSSDoperation.However,thenetworkisallowedtoinitiateUSSDoperationsinparalleltocallrelatedtransactions.MSNetworkREGISTER<------------------------------------------------------------------------------------------------------------------------Facility(Invoke=UnstructuredSS-Request(ussd-DataCodingScheme,ussd-String))FACILITY------------------------------------------------------------------------------------------------------------------------>Facility(Returnresult=UnstructuredSS-Request(ussd-DataCodingScheme,ussd-String))FACILITY------------------------------------------------>Facility(Returnerror(Error))FACILITY------------------------------------------------>Facility(Reject(Invoke_problem))RELEASECOMPLETE<------------------------------------------------------------------------------------------------------------------------NOTE:TheMSmayclearthetransactionatanytimebysendingaRELEASECOMPLETEuponrequestoftheuser.Figure5.1:SinglenetworkinitiatedUSSDrequestSIST EN 300 957 V7.0.1:2003

ETSIETSIEN300957V7.0.1(2000-01)7(GSM04.90version7.0.1Release1998)MSNetworkREGISTER<------------------------------------------------------------------------------------------------------------------------Facility(Invoke=UnstructuredSS-Request(ussd-DataCodingScheme,ussd-String))FACILITY------------------------------------------------------------------------------------------------------------------------>Fa
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