SIST EN 300 175-5 V1.5.1:2003
(Main)Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 5: Network (NWK) layer
- Abstract
Maintenance update.
- Status
- Published
- Publication Date
- 30-Nov-2003
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Dec-2003
- Due Date
- 01-Dec-2003
- Completion Date
- 01-Dec-2003
SIST EN 300 175-5 V1.5.1:2003 is the SIST version of the ETSI standard for the Digital Enhanced Cordless Telecommunications (DECT) Common Interface, Part 5, covering the Network (NWK) layer. It is identified as a maintenance update and specifies the DECT NWK layer C-plane signalling used by FT, PT, HyP and related DECT entities.
What does SIST EN 300 175-5 V1.5.1:2003 specify?
SIST EN 300 175-5 V1.5.1:2003 specifies the DECT NWK layer as layer 3 of the DECT protocol stack. It covers the C-plane only; the U-plane at the NWK layer is null for all services.
The standard organizes the NWK layer into six functional groups:
- Call Control (CC)
- Supplementary Services (SS)
- Connection Oriented Message Service (COMS)
- Connection Less Message Service (CLMS)
- Mobility Management (MM)
- Link Control Entity (LCE)
Clauses 4 to 17 describe the overview, message formats, procedures, primitives, and error handling. Annexes A to J provide timers, state tables, character sets, coding rules, and special procedures.
| Annex | What it covers |
|---|---|
| A | System parameters, including timers and NWK layer constants |
| B | CC state transition tables |
| C | DLC states as viewed by the LCE |
| D | DECT standard character sets |
| E | Default coding for basic speech IWU and call attributes |
| F | Broadcast attributes coding |
| G | Use of IWU-PACKET and IWU-TO-IWU information elements |
| H | TIF assignment in MM procedures |
| I | Distributed Communications |
| J | Scrolling behaviour |
What are the key requirements of SIST EN 300 175-5 V1.5.1:2003?
SIST EN 300 175-5 V1.5.1:2003 defines how DECT control signalling is structured, routed, and exchanged between peer entities. In practice, it tells implementers what messages exist, how they are encoded, and how state machines move during call setup, mobility events, and service changes.
1. The LCE is the common routing layer
Clause 5 states that the LCE provides the common foundation for the higher entities and routes messages using the DLC Data Link Endpoint Identifier (DLEI) plus the protocol discriminator. This matters because higher-layer entities do not talk directly over the radio link - the LCE decides how each message reaches the right peer process.
2. CC covers the full call lifecycle
Clause 5 and clause 9 define call setup, connect, information, service change, and release. The CC procedures support outgoing and incoming calls, optional service negotiation, and release of both U-plane and NWK C-plane resources, so implementers must handle call state changes cleanly.
3. SS supports both call-related and call-independent use
Clause 5 and clause 10 separate Call Related Supplementary Services (CRSS) from Call Independent Supplementary Services (CISS). This distinction matters because some supplementary services are tied to one CC instance, while others run independently of any call.
4. COMS and CLMS provide two messaging styles
Clauses 5, 11 and 12 define Connection Oriented Message Service (COMS) and Connection Less Message Service (CLMS). COMS uses establishment, data transfer, suspend/resume, and release procedures, while CLMS supports fixed-length and variable-length messages, which gives equipment two different ways to carry non-call signalling.
5. MM manages identity, authentication, location and keys
Clauses 5 and 13 define MM procedures for identity, temporary identity assignment, authentication, location registration, detach, access rights, key allocation, parameter retrieval, and ciphering-related actions. For a reader, this means the standard covers the control signalling needed to recognize a terminal, verify it, locate it, and manage security data.
6. LCE handles link establishment and paging
Clause 14 covers direct and indirect link establishment, link maintenance, suspend/resume, release, message routing, broadcast announce, collective and group ringing, and Resume Paging. This is the part that coordinates how the lower link is brought up and kept available for higher-layer signalling.
7. Management procedures coordinate service and handover
Clause 15 defines LLME coordination, service mapping and negotiation, resource management, MM management, call ciphering management, and External Handover. In practice, these procedures are used when equipment changes service parameters, hands over between fixed parts, or manages test and callback functions.
8. Error handling is explicit
Clause 17 lists protocol discrimination errors, short messages, transaction identifier errors, message sequence problems, information element errors, data link reset, and data link failure. This helps implementers decide how to reject malformed signalling and how to recover safely.
What terms does SIST EN 300 175-5 V1.5.1:2003 define?
- Active terminal/member - a member of a DCDL-net that is powered up, locked to the MASTER, and has announced itself as present.
- DECT Local Network (DL-net) - a local network of DECT terminals capable of inter-communicating, with or without an external network.
- Fixed radio Termination (FT) - the fixed-side radio termination that takes part in DECT NWK procedures.
- Portableradio Termination (PT) - the portable-side radio termination used in call, mobility, and messaging procedures.
- Link Control Entity (LCE) - the entity that establishes, maintains, and releases the C-plane link and routes messages.
- Mobility Management (MM) - the entity that handles identity, authentication, location updating, subscription rights, and key allocation.
- Call Independent Supplementary Services (CISS) - supplementary services that operate independently of any CC instance.
- Call Related Supplementary Services (CRSS) - supplementary services that are associated with a specific CC instance.
Who uses SIST EN 300 175-5 V1.5.1:2003?
SIST EN 300 175-5 V1.5.1:2003 is used by DECT system designers, terminal manufacturers, fixed-part manufacturers, and interworking-unit developers. It is also relevant to test labs and quality teams that need to verify signalling, state transitions, message coding, and error handling.
In practice, it supports work on call control, supplementary services, mobility management, link control, and interworking with higher-layer services. Buyers and integrators use it to check whether a DECT product supports the NWK signalling needed for the functions they plan to deploy.
Which standards are used with SIST EN 300 175-5 V1.5.1:2003?
The standard references the other DECT Common Interface parts - EN 300 175-1 through EN 300 175-8 - for the overall DECT framework, layer structure, identities, security, and speech coding. It also relies on EN 300 403-1 and I-ETS 300 022-1 as protocol models for CC and related procedures.
For character coding and protocol principles, it uses ITU-T X.200, ITU-T X.210, ITU-T T.50, and ISO/IEC 2022. For message and network service concepts, it references ISO/IEC 8348, ISO/IEC 8473, ISO/IEC 8208, and ITU-T X.263.
What does the SIST EN 300 175-5 V1.5.1:2003 document contain?
The document contains message summaries, message formats, state machines, procedure descriptions, primitives, and error handling rules for the DECT NWK layer. Clause 6 defines the functional contents of S-FORMAT and B-FORMAT messages, while clauses 7 and 8 define their structures and information elements.
Clauses 9 to 15 describe the procedures for CC, SS, COMS, CLMS, MM, LCE, and management. Annexes A and B provide timers and CC state tables, and the later annexes give coding rules, distributed communications procedures, and scrolling behaviour for implementation and testing.
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Frequently Asked Questions
SIST EN 300 175-5 V1.5.1:2003 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 5: Network (NWK) layer". This standard covers: Maintenance update.
Maintenance update.
SIST EN 300 175-5 V1.5.1:2003 is classified under the following ICS (International Classification for Standards) categories: 33.070.30 - Digital Enhanced Cordless Telecommunications (DECT); 35.100.30 - Network layer. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 300 175-5 V1.5.1:2003 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 5: Network (NWK) layer35.100.30Omrežni slojNetwork layer33.070.30'(&7Digital Enhanced Cordless Telecommunications (DECT)ICS:Ta slovenski standard je istoveten z:EN 300 175-5 Version 1.5.1SIST EN 300 175-5 V1.5.1:2003en01-december-2003SIST EN 300 175-5 V1.5.1:2003SLOVENSKI
STANDARD
ETSIEN300175-5V1.5.1(2001-02)EuropeanStandard(Telecommunicationsseries)DigitalEnhancedCordlessTelecommunications(DECT);CommonInterface(CI);Part5:Network(NWK)layerSIST EN 300 175-5 V1.5.1:2003
ETSIETSIEN300175-5V1.5.1(2001-02)2ReferenceREN/DECT-000157-5KeywordsDECT,radioETSI650RoutedesLuciolesF-06921SophiaAntipolisCedex-FRANCETel.:+33492944200Fax:+33493654716SiretN°34862356200017-NAF742CAssociationàbutnonlucratifenregistréeàlaSous-PréfecturedeGrasse(06)N°7803/88ImportantnoticeIndividualcopiesofthepresentdocumentcanbedownloadedfrom:http://www.etsi.orgThepresentdocumentmaybemadeavailableinmorethanoneelectronicversionorinprint.Inanycaseofexistingorperceiveddifferenceincontentsbetweensuchversions,thereferenceversionisthePortableDocumentFormat(PDF).Incaseofdispute,thereferenceshallbetheprintingonETSIprintersofthePDFversionkeptonaspecificnetworkdrivewithinETSISecretariat.Usersofthepresentdocumentshouldbeawarethatthedocumentmaybesubjecttorevisionorchangeofstatus.InformationonthecurrentstatusofthisandotherETSIdocumentsisavailableathttp://www.etsi.org/tb/status/Ifyoufinderrorsinthepresentdocument,sendyourcommentto:editor@etsi.frCopyrightNotificationNopartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute2001.Allrightsreserved.SIST EN 300 175-5 V1.5.1:2003
ETSIETSIEN300175-5V1.5.1(2001-02)3ContentsIntellectualPropertyRights.14Foreword.141Scope.152References.153Definitionsandabbreviations.193.1Definitions.193.2Abbreviations.214OverviewoftheNWKlayer.235Overviewofprocedures.255.1General.255.2OverviewofCallControl(CC).255.2.1General.255.2.2Callestablishment.255.2.2.1Callsetup.255.2.2.2Servicenegotiation.265.2.3Callconnect.265.2.4Callinformation.265.2.5Servicechange.265.2.6Callrelease.275.3OverviewofSupplementaryServices(SS).275.3.1General.275.3.2Keypadprotocol.285.3.3Featurekeymanagementprotocol.285.3.4Functionalprotocol.285.4OverviewofConnectionOrientedMessageService(COMS).285.4.1General.285.4.2COMSestablishment.295.4.3Servicenegotiation.295.4.4COMSconnect.295.4.5COMSdatatransfer.295.4.6COMSsuspendandresume.295.4.7COMSrelease.305.5OverviewofConnectionLessMessageService(CLMS).305.5.1Fixedlengthmessageservice.305.5.2Variablelengthmessageservice.305.6OverviewofMobilityManagement(MM).315.6.1General.315.6.2Identityprocedures.315.6.3Authenticationprocedures.315.6.4Locationprocedures.325.6.5Accessrightsprocedures.325.6.6Keyallocationprocedure.335.6.7Parameterretrievalprocedure.335.6.8Cipheringrelatedprocedure.335.7OverviewofLinkControlEntity(LCE).335.7.1General.335.7.2DataLinkEndpointIdentifier(DLEI).335.7.3Datalinkestablishment.345.7.4Datalinkre-establishment.345.7.5Datalinkrelease.345.7.6Datalinksuspendandresume.355.7.7Queuingofmessages.355.7.8Requestpaging.35SIST EN 300 175-5 V1.5.1:2003
ETSIETSIEN300175-5V1.5.1(2001-02)46Messagefunctionaldefinitions.366.1Overviewofmessagestructures.366.1.1Messages.366.1.2Informationelements.366.2Messagesummaries.376.2.1SummaryofCCmessages.376.2.2SummaryofCISSmessages.376.2.3SummaryofCOMSmessages.386.2.4SummaryofCLMSmessages.386.2.5SummaryofMMmessages.396.2.6SummaryofLCEmessages.396.3S-FORMATmessagefunctionalcontents.406.3.1S-FORMATmessageoverview.406.3.2CC-messages.416.3.2.1{CC-SETUP}.416.3.2.2{CC-INFO}.436.3.2.3{CC-SETUP-ACK}.446.3.2.4{CC-CALL-PROC}.456.3.2.5{CC-ALERTING}.466.3.2.6{CC-CONNECT}.476.3.2.7{CC-CONNECT-ACK}.486.3.2.8{CC-RELEASE}.486.3.2.9{CC-RELEASE-COM}.496.3.2.10{CC-SERVICE-CHANGE}.506.3.2.11{CC-SERVICE-ACCEPT}.506.3.2.12{CC-SERVICE-REJECT}.516.3.2.13{CC-NOTIFY}.516.3.2.14{IWU-INFO}.526.3.3SS-messages(callrelatedandcallindependent).536.3.3.1{FACILITY}.536.3.3.2{HOLD}.536.3.3.3{HOLD-ACK}.546.3.3.4{HOLD-REJECT}.546.3.3.5{RETRIEVE}.556.3.3.6{RETRIEVE-ACK}.556.3.3.7{RETRIEVE-REJECT}.566.3.3.8{CISS-REGISTER}.566.3.3.9{CISS-RELEASE-COM}.576.3.4COMS-messages.576.3.4.1{COMS-SETUP}.576.3.4.2{COMS-INFO}.586.3.4.3{COMS-ACK}.586.3.4.4{COMS-CONNECT}.596.3.4.5{COMS-RELEASE}.596.3.4.6{COMS-RELEASE-COM}.606.3.4.7{COMS-NOTIFY}.606.3.5CLMS-message.616.3.5.1{CLMS-VARIABLE}.616.3.6MM-messages.626.3.6.1{ACCESS-RIGHTS-ACCEPT}.626.3.6.2{ACCESS-RIGHTS-REJECT}.626.3.6.3{ACCESS-RIGHTS-REQUEST}.636.3.6.4{ACCESS-RIGHTS-TERMINATE-ACCEPT}.636.3.6.5{ACCESS-RIGHTS-TERMINATE-REJECT}.646.3.6.6{ACCESS-RIGHTS-TERMINATE-REQUEST}.646.3.6.7{AUTHENTICATION-REJECT}.656.3.6.8{AUTHENTICATION-REPLY}.656.3.6.9{AUTHENTICATION-REQUEST}.656.3.6.10{CIPHER-REJECT}.666.3.6.11{CIPHER-REQUEST}.676.3.6.12{CIPHER-SUGGEST}.676.3.6.13{DETACH}.68SIST EN 300 175-5 V1.5.1:2003
ETSIETSIEN300175-5V1.5.1(2001-02)56.3.6.14{IDENTITY-REPLY}.686.3.6.15{IDENTITY-REQUEST}.696.3.6.16{KEY-ALLOCATE}.696.3.6.17{LOCATE-ACCEPT}.706.3.6.18{LOCATE-REJECT}.706.3.6.19{LOCATE-REQUEST}.716.3.6.20{MM-INFO-ACCEPT}.716.3.6.21{MM-INFO-REJECT}.726.3.6.22{MM-INFO-REQUEST}.726.3.6.23{MM-INFO-SUGGEST}.736.3.6.24{TEMPORARY-IDENTITY-ASSIGN}.736.3.6.25{TEMPORARY-IDENTITY-ASSIGN-ACK}.746.3.6.26{TEMPORARY-IDENTITY-ASSIGN-REJ}.746.3.7LCE-messages.756.3.7.1{LCE-PAGE-RESPONSE}.756.3.7.2{LCE-PAGE-REJECT}.756.4B-FORMATmessagefunctionalcontents.766.4.1B-FORMATmessageoverview.766.4.2{LCE-REQUEST-PAGE}.766.4.3{CLMS-FIXED}.777S-FORMATmessagestructures.777.1Overview.777.2ProtocolDiscrimination(PD)element.787.3TransactionIdentifier(TI)element.787.4Messagetypeelement.797.4.1MessagesforCC.807.4.2MessagesforSS.807.4.3MessagesforCOMS.807.4.4MessagesforCLMS.817.4.5MessagesforMM.817.4.6MessagesforLCE.817.5Otherinformationelements.827.5.1Codingrules.827.5.2Extensionsofcodesets.847.5.3Lockingshiftprocedure.847.5.4Non-lockingshiftprocedure.857.5.5Displayandkeypadelements.857.5.6Repeatedelements.857.6Fixedlengthinformationelements.867.6.1Summary.867.6.2Sendingcomplete,delimiterrequestanduseTPUI.867.6.3Repeatindicator.877.6.4Basicservice.877.6.5Singledisplay.887.6.6Singlekeypad.887.6.7Releasereason.887.6.8Signal.897.6.9Timerrestart.907.6.10Testhookcontrol.917.7Variablelengthinformationelements.917.7.1Summary.917.7.2Allocationtype.937.7.3Alphanumeric.947.7.4Authtype.957.7.5Callattributes.967.7.6Callidentity.987.7.7Calledpartynumber.997.7.8Calledpartysubaddress.1007.7.9Callingpartynumber.1007.7.10Cipherinfo.1017.7.11Connectionattributes.102SIST EN 300 175-5 V1.5.1:2003
ETSIETSIEN300175-5V1.5.1(2001-02)67.7.12Connectionidentity.1057.7.13Duration.1057.7.14End-to-endcompatibility.1067.7.15Facility.1097.7.16Featureactivate.1107.7.17Featureindicate.1127.7.18Fixedidentity.1147.7.19Identitytype.1157.7.20Infotype.1167.7.21InterWorkingUnit(IWU)attributes.1177.7.22IWUpacket.1217.7.23IWUtoIWU.1227.7.24Key.1247.7.25Locationarea.1257.7.26Multi-display.1267.7.27Multi-keypad.1267.7.28NetWorK(NWK)assignedidentity.1267.7.29Networkparameter.1277.7.30Portableidentity.1287.7.31Progressindicator.1317.7.32RAND.1327.7.33Rateparameters.1337.7.34Rejectreason.1347.7.35RES.1357.7.36RS.1357.7.37Segmentedinfo.1367.7.38Servicechangeinfo.1367.7.39Serviceclass.1387.7.40Setupcapability.1387.7.41Terminalcapability.1397.7.42Transitdelay.1437.7.43Windowsize.1437.7.44ZAPfield.1447.7.45Escapetoproprietary.1447.7.46Modelidentifier.1457.7.47MMSGenericHeader.1467.7.48MMSObjectHeader.1467.7.49MMSExtendedheader.1467.7.50Time-Date.1467.7.51Exth/oindicator.1488B-FORMATmessagestructures.1498.1General.1498.2LCErequestpagingmessages.1498.2.1Shortformatmessage.1508.2.2Longformatmessage.1528.3CLMS-FIXEDmessages.1548.3.1Generalmessagestructure.1548.3.2Messageelements.1558.3.3Standardmessagestructures.1578.3.3.1General.1578.3.3.2Messagesusing4-bitcharacters.1578.3.3.3Messagesusing8-bitcharacters.1579CallControl(CC)procedures.1579.1General.1579.2CallControl(CC)states.1609.2.1StatesatPT.1609.2.1.1StateT-00:"NULL".1609.2.1.2StateT-19:"RELEASEPENDING".1609.2.1.3StateT-10:"ACTIVE".1609.2.1.4StateT-01:"CALLINITIATED".160SIST EN 300 175-5 V1.5.1:2003
ETSIETSIEN300175-5V1.5.1(2001-02)79.2.1.5StateT-02:"OVERLAPSENDING".1609.2.1.6StateT-03:"CALLPROCEEDING".1609.2.1.7StateT-04:"CALLDELIVERED".1609.2.1.8StateT-06:"CALLPRESENT".1609.2.1.9StateT-07:"CALLRECEIVED".1609.2.1.10StateT-08:"CONNECTPENDING".1609.2.2StatesatFT.1619.2.2.1StateF-00:"NULL".1619.2.2.2StateF-19:"RELEASEPENDING".1619.2.2.3StateF-10:"ACTIVE".1619.2.2.4StateF-01:"CALL-INITIATED".1619.2.2.5StateF-02:"OVERLAPSENDING".1619.2.2.6StateF-03:"CALLPROCEEDING".1619.2.2.7StateF-04:"CALLDELIVERED".1619.2.2.8StateF-06:"CALLPRESENT".1619.2.2.9StateF-07:"CALLRECEIVED".1619.2.3Optionalstates(PTandFT).1629.2.3.1StatesT-22andF-22:"OVERLAPRECEIVING".1629.2.3.2StatesT-23andF-23:"INCOMINGCALLPROCEEDING".1629.3Callestablishmentprocedures.1629.3.1PTinitiatedcallestablishment(outgoingcall).1629.3.1.1Callrequest.1629.3.1.2Callacceptorreject.1639.3.1.3Selectionoflowerlayerresources.1639.3.1.4ConnectionofU-plane.1649.3.1.5Overlapsending.1649.3.1.6Callproceeding.1659.3.1.7Callconfirmation.1659.3.1.8Callconnection.1669.3.1.9Expiryoftimer.1669.3.2FTinitiatedcallestablishment(incomingcall).1669.3.2.1Callrequest.1669.3.2.2Callacceptorreject.1679.3.2.3Selectionoflowerlayerresources.1679.3.2.4ConnectionofU-plane.1689.3.2.5Overlapreceiving.1689.3.2.6Callproceeding.1689.3.2.7Callconfirmation.1689.3.2.8Callconnection.1689.3.2.9Sendingof<>.1699.3.2.10Expiryoftimer.1699.4Callinformationprocedures.1699.5Callreleaseprocedures.1699.5.1Normalcallrelease.1699.5.2Abnormalcallrelease.1709.5.3Releasecollisions.1709.6Servicechangeprocedures.1719.6.1General.1719.6.2Bandwidthchanges(includingreversals).1719.6.3Servicererouting.1729.6.4Servicesuspensionandresumption.1729.6.5Modulationschemechange.1729.7Packetmodeprocedures.1729.7.1General.1729.7.2PTinitiatedaccess.1739.7.3FTinitiatedaccess.1739.7.4Packetmodesuspendandresume.1739.7.4.1General.17
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