SIST EN 300 947 V6.0.1:2003

• Abstract:

  Upgrade from Phase 2+ to Release 1997

• 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
• Mandate: UIC
• Ref Project: ETSI EN 300 947 V6.0.1 (1999-09) - Digital cellular telecommunications system (Phase 2+) (GSM); enhanced Multi-Level Precedence and Pre-emption service (eMLPP); Stage 3 (GSM 04.67 version 6.0.1 Release 1997)

Overview

SIST EN 300 947 V6.0.1:2003 defines the enhanced Multi-Level Precedence and Pre-emption service (eMLPP) for the digital cellular telecommunications system (GSM Phase 2+), aligning with GSM 04.67 version 6.0.1 Release 1997. Published by the Slovenski inštitut za standardizacijo (SIST), this standard describes the procedures and signalling at the radio interface to deliver eMLPP as a supplementary GSM service. The standard is equivalent to EN 300 947 and was adopted to incorporate upgrades from GSM Phase 2+ to the Release 1997 architecture.

eMLPP provides advanced call prioritization and pre-emption functionalities, essential for services where different call classes may require prioritized access, such as emergency response, security, or critical enterprise communications.

Key Topics

• eMLPP Service Definition
  Enhanced Multi-Level Precedence and Pre-emption (eMLPP) enables assignment of priority levels to calls, allowing prioritized access and the ability to pre-empt lower-priority calls when resources are limited.

• Radio Interface Procedures
  The standard outlines signalling protocols between mobile stations and the network for normal operation, call initiation, call termination, registration, and interrogation of the eMLPP service.

• Priority Call Establishment

  • Mobile originated calls can request specific priority levels; the network applies either the requested or default priority.
  • Mobile terminated calls include priority information in paging and setup messages, ensuring that the receiving device is aware of the precedence requirements.

• Pre-emption Mechanisms
  eMLPP defines procedures for pre-empting ongoing calls if necessary to serve higher-priority requests, supporting scenarios such as emergency call handling and explicit call transfer.

• Group and Broadcast Call Handling
  Procedures are included for priority signalling in Voice Group Call and Voice Broadcast Call scenarios, leveraging group call references augmented with priority levels.

• Service Registration and Interrogation
  Subscribers can register their default priority level with the network and query (interrogate) their service status and allowed priority levels.

Applications

Enhanced Precedence and Pre-emption in GSM are vital in areas requiring mission-critical communication. Typical applications include:

• Emergency and Public Safety Communications
  eMLPP is used to ensure that police, fire, and medical responders receive priority access to mobile networks during peak or congested situations.
• Military Communication Networks
  Supports multi-level precedence for command hierarchies, enabling higher command calls to pre-empt less critical communications.
• Critical Enterprise Environments
  Utility operators, transport authorities, and security teams leverage eMLPP to guarantee prioritized connectivity for key personnel.
• Group and Broadcast Scenarios
  Within Voice Group Call Service (VGCS) or Voice Broadcast Service (VBS), eMLPP manages call priority for coordinated team responses.

By implementing SIST EN 300 947 V6.0.1:2003, operators can offer users robust supplementary services for situations where call precedence and interruption management are crucial.

Related Standards

For complete integration and compatibility within GSM networks, consider these closely related standards:

• GSM 02.67 & 03.67: Base definitions and technical realization of eMLPP (Stages 1 & 2).
• GSM 04.02, 04.07, 04.08, 04.10, 04.80: General GSM radio interface, signalling, and supplementary service procedures.
• GSM 03.68 & 03.69: Specifications for Voice Group Call Service (VGCS) and Voice Broadcast Service (VBS).
• Other Supplementary Services: Call Waiting (CW), Call Hold, MultiParty (MPTY), and Call Barring functionalities detailed in the GSM 02.8x and 03.8x series.

These references support standardized implementation and ensure interoperability across GSM infrastructure, advancing reliable telecommunications services with enhanced service quality and operational resilience.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digital cellular telecommunications system (Phase 2+) (GSM); enhanced Multi-Level Precedence and Pre-emption service (eMLPP); Stage 3 (GSM 04.67 version 6.0.1 Release 1997)33.070.50Globalni sistem za mobilno telekomunikacijo (GSM)Global System for Mobile Communication (GSM)ICS:Ta slovenski standard je istoveten z:EN 300 947 Version 6.0.1SIST EN 300 947 V6.0.1:2003en01-december-2003SIST EN 300 947 V6.0.1:2003SLOVENSKI
STANDARD
EN 300 947 V6.0.1 (1999-09)European Standard (Telecommunications series)Digital cellular telecommunications system (Phase 2+);enhanced Multi-Level Precedence andPre-emption service (eMLPP);Stage 3(GSM 04.67 version 6.0.1 Release 1997)GLOBAL SYSTEM
FOR MOBILE COMMUNICATIONSRSIST EN 300 947 V6.0.1:2003

ETSIEN 300 947 V6.0.1 (1999-09)2(GSM 04.67 version 6.0.1 Release 1997)ReferenceDEN/SMG-030467Q6 (8ro0300o.PDF)KeywordsDigital cellular telecommunications system,Global System for Mobile communications (GSM)ETSIPostal addressF-06921 Sophia Antipolis Cedex - FRANCEOffice address650 Route des Lucioles - Sophia AntipolisValbonne - FRANCETel.: [phone]
Fax: [phone]Siret N° 348 623 562 00017 - NAF 742 CAssociation à but non lucratif enregistrée à laSous-Préfecture de Grasse (06) N° 7803/[e-mail] copies of this ETSI deliverablecan be downloaded fromhttp://www.etsi.orgIf you find errors in the present document, send yourcomment to: [e-mail] NotificationNo part may be reproduced except as authorized by written permission.The copyright and the foregoing restriction extend to reproduction in all media.© European Telecommunications Standards Institute 1999.All rights reserved.SIST EN 300 947 V6.0.1:2003

ETSIEN 300 947 V6.0.1 (1999-09)3(GSM 04.67 version 6.0.1 Release 1997)ContentsIntellectual Property Rights.4Foreword.41Scope.52References.53Definitions and abbreviations.73.1Definitions.73.2Abbreviations.74enhanced Multi-Level Precedence and Pre-emption (eMLPP).74.1Normal operation.74.1.1Mobile originated calls.74.1.2Mobile terminated calls.94.1.3Called party pre-emption for mobile terminated calls.94.1.4Group call or broadcast call, calling mobile station.94.1.5Group or broadcast call, called mobile stations.114.2Registration.114.3Erasure.114.4Activation, deactivation.124.5Interrogation.12Annex A (informative):Change Request History.13History.14SIST EN 300 947 V6.0.1:2003

ETSIEN 300 947 V6.0.1 (1999-09)4(GSM 04.67 version 6.0.1 Release 1997)Intellectual Property RightsIPRs essential or potentially essential to the present document may have been declared to ETSI. The informationpertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be foundin SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respectof ETSI standards", which is available free of charge from the ETSI Secretariat. Latest updates are available on theETSI Web server (http://www.etsi.org/ipr).Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guaranteecan be given as to the existence of other IPRs not referenced in SR 000 314 (or the updates on the ETSI Web server)which are, or may be, or may become, essential to the present document.ForewordThis European Standard (Telecommunications series) has been produced by the Special Mobile Group (SMG).The present document specifies the stage three description of the enhanced Multi-Level Precedence and Pre-emptionService (eMLPP) within the digital cellular telecommunications system.The contents of the present document is subject to continuing work within SMG and may change following formal SMGapproval. Should SMG modify the contents of the present document it will be re-released with an identifying change ofrelease date and an increase in version number as follows:Version 6.x.ywhere:6indicates Release 1997 of GSM Phase 2+xthe second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates,etc.ythe third digit is incremented when editorial only changes have been incorporated in the specification.Proposed national transposition datesDate of adoption of this EN:3 September 1999Date of latest announcement of this EN (doa):31 December 1999Date of latest publication of new National Standardor endorsement of this EN (dop/e):30 June 2000Date of withdrawal of any conflicting National Standard (dow):30 June 2000SIST EN 300 947 V6.0.1:2003

ETSIEN 300 947 V6.0.1 (1999-09)5(GSM 04.67 version 6.0.1 Release 1997)1ScopeThe present document specifies the procedures used at the radio interface (Reference point Um as defined inGSM 04.02) for normal operation, invocation, registration and interrogation of the enhanced Multi-Level Precedenceand Pre-emption Service (eMLPP) supplementary service. Provision and withdrawal of supplementary services is anadministrative matter between the mobile subscriber and the service provider and cause no signalling on the radiointerface.In GSM 04.10 the general aspects of the specification of supplementary services at the layer 3 radio interface are given.GSM 04.80 specifies the formats and coding for the supplementary services.Definitions and descriptions of supplementary services are given in GSM 02.04 and GSM 02.8x and 02.9x-series.GSM 02.67 is related specially to eMLPP.Technical realization of supplementary services is described in GSM 03.11 and GSM 03.8x and 03.9x-series.GSM 03.67 is related specially to eMLPP.The procedures for Call Control, Mobility Management and Radio Resource management at the layer 3 radio interfaceare defined in GSM 04.07 and GSM 04.08.2ReferencesThe following documents contain provisions which, through reference in this text, constitute provisions of the presentdocument.· References are either specific (identified by date of publication, edition number, version number, etc.) ornon-specific.· For a specific reference, subsequent revisions do not apply.· For a non-specific reference, the latest version applies.· A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the samenumber.· For this Release 1997 document, references to GSM documents are for Release 1997 versions (version 6.x.y).[1]GSM 01.04: "Digital cellular telecommunications system (Phase 2+); Abbreviations andacronyms".[2]GSM 02.04: "Digital cellular telecommunications system (Phase 2+); General on supplementaryservices".[3]GSM 02.67: "Digital cellular telecommunications system (Phase 2+); enhanced Multi-LevelPrecedence and Pre-emption service (eMLPP) - Stage 1".[4]GSM 02.81: "Digital cellular telecommunications system (Phase 2+); Line identificationsupplementary services - Stage 1".[5]GSM 02.82: "Digital cellular telecommunications system (Phase 2+); Call Forwarding (CF)supplementary services - Stage 1".[6]GSM 02.83: "Digital cellular telecommunications system (Phase 2+); Call Waiting (CW) and CallHold (HOLD) supplementary services - Stage 1".[7]GSM 02.84: "Digital cellular telecommunications system (Phase 2+); MultiParty (MPTY)supplementary services - Stage 1".[8]GSM 02.85: "Digital cellular telecommunications system (Phase 2+); Closed User Group (CUG)supplementary services - Stage 1".SIST EN 300 947 V6.0.1:2003

ETSIEN 300 947 V6.0.1 (1999-09)6(GSM 04.67 version 6.0.1 Release 1997)[9]GSM 02.86: "Digital cellular telecommunications system (Phase 2+); Advice of Charge (AoC)Supplementary Services - Stage 1".[10]GSM 02.88: "Digital cellular telecommunications system (Phase 2+); Call Barring (CB)supplementary services - Stage 1".[11]GSM 02.90: "Digital cellular telecommunications system (Phase 2+); Stage 1 description ofUnstructured Supplementary Service Data (USSD)".[12]GSM 02.91: "Digital cellular telecommunications system (Phase 2+); Explicit Call Transfer(ECT)".[13]GSM 03.11: "Digital cellular telecommunications system (Phase 2+); Technical realization ofsupplementary services".[14]GSM 03.67: "Digital cellular telecommunications system (Phase 2+); enhanced Multi-LevelPrecedence and Pre-emption service (eMLPP) - Stage 2".[15]GSM 03.68: "Digital cellular telecommunications system (Phase 2+);Voice Group Call Service(VGCS) - Stage 2".[16]GSM 03.69: "Digital cellular telecommunications system (Phase 2+);Voice Broadcast Service(VBS) - Stage 2".[17]GSM 03.81: "Digital cellular telecommunications system (Phase 2+); Line identificationsupplementary services - Stage 2".[18]GSM 03.82: "Digital cellular telecommunications system (Phase 2+); Call Forwarding (CF)supplementary services - Stage 2".[19]GSM 03.83: "Digital cellular telecommunications system (Phase 2+); Call Waiting (CW) and CallHold (HOLD) supplementary services - Stage 2".[20]GSM 03.84: "Digital cellular telecommunications system (Phase 2+); MultiParty (MPTY)supplementary services - Stage 2".[21]GSM 03.85: "Digital cellular telecommunications system (Phase 2+); Closed User Group (CUG)supplementary services - Stage 2".[22]GSM 03.86: "Digital cellular telecommunications system (Phase 2+); Advice of Charge (AoC)supplementary services - Stage 2".[23]GSM 03.88: "Digital cellular telecommunications system (Phase 2+); Call Barring (CB)supplementary services - Stage 2".[24]GSM 03.90: "Digital cellular telecommunications system (Phase 2+); Unstructured supplementaryservices operation - Stage 2".[25]GSM 03.91: "Digital cellular telecommunications system (Phase 2+); Explicit Call Transfer (ECT)supplementary service - Stage 2".[26]GSM 04.02: "Digital cellular telecommunications system (Phase 2+); GSM Public Land MobileNetwork (PLMN) access reference configuration".[27]GSM 04.07: "Digital cellular telecommunications system (Phase 2+); Mobile radio interfacesignalling layer 3; General aspects".[28]GSM 04.08: "Digital cellular telecommunications system (Phase 2+); Mobile radio interfacelayer 3 specification".[29]GSM 04.10: "Digital cellular telecommunications system (Phase 2+); Mobile radio interfacelayer 3
Supplementary services specification; General aspects".[30]GSM 04.80: "Digital cellular telecommunications system (Phase 2+); Mobile radio interfacelayer 3 supplementary services specification
Formats and coding".SIST EN 300 947 V6.0.1:2003

ETSIEN 300 947 V6.0.1 (1999-09)7(GSM 04.67 version 6.0.1 Release 1997)3Definitions and abbreviations3.1DefinitionsDefinitions used in the present document are defined in GSM 02.67 and GSM 03.67.3.2AbbreviationsAbbreviations used in the present document are listed in GSM 01.04.For the purposes of the present document, the following abbreviations apply:eMLPPenhanced MLPPMLPPMulti-Level Precedence and Pre-emptionVBSVoice Broadcast ServiceVGCSVoice Group Call Service4enhanced Multi-Level Precedence and Pre-emption(eMLPP)4.1Normal operationNOTE:In the call related messages only the additional information for the eMLPP supplementary service isshown in the figures.4.1.1Mobile originated callsThe mobile station can indicate the priority of each call initiated. If no priority is indicated by the user or a non-compatible mobile station is used then the default priority level shall be applied which is stored in the VLR. Theselection of priority shall be an MMI function.SIST EN 300 947 V6.0.1:2003

ETSIEN 300 947 V6.0.1 (1999-09)8(GSM 04.67 version 6.0.1 Release 1997)For mobile originated calls, the corresponding message flows are shown in figure 1.MSNetworkIMM_ASS<------------------------------------------------------------------------------------------------------------------------SABM (SERV_REQ (PriorityLevel))------------------------------------------------------------------------------------------------------------------------>UA (SERV_REQ (PriorityLevel))<----------------------------------------------------------------------------------------------------------
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