SIST EN 300 175-5 V2.1.1:2008
Digital Enhanced Cordless Telecommunications (DECT) - Common Interface (CI) - Part 5: Network (NWK) layer
- Abstract
The present document is one of the parts of the specification of the Digital Enhanced Cordless Telecommunications (DECT) Common Interface (CI). This part of the DECT CI specifies the Network (NWK) layer. The NWK layer is part 5 of the EN 300 175 and layer 3
of the DECT protocol stack. The present document only specifies the C-plane (control plane) of the DECT NWK layer. It contains no specification for the U-plane (user plane) because the U-plane is null for all services at the DECT NWK layer. The C-plane contains all of the internal signalling information, and the NWK layer protocols are grouped into the following families of procedures:
• Call Control (CC);
• Supplementary Services (SS);
• Connection Oriented Message Service (COMS);
• ConnectionLess Message Service (CLMS);
• Mobility Management (MM);
• Link Control Entity (LCE).
The present document uses the layered model principles and terminology as described in ITU-T Recommendation X.200 and ITU-T Recommendation X.210. The present document includes New Generation DECT, a further development of the DECT standard introducing wideband speech, improved data services, new slot types and other technical enhancements.
- Status
- Published
- Publication Date
- 12-Feb-2008
- Technical Committee
- MOC - Mobile Communications
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 28-Jan-2008
- Due Date
- 03-Apr-2008
- Completion Date
- 13-Feb-2008
SIST EN 300 175-5 V2.1.1:2008 is the SIST publication of the ETSI DECT Common Interface standard for the Network (NWK) layer. It specifies the DECT control plane at layer 3, defining the signalling procedures, message formats and information elements used by DECT equipment and related interworking functions.
What does SIST EN 300 175-5 V2.1.1:2008 specify?
SIST EN 300 175-5 V2.1.1:2008 specifies the NWK layer of the Digital Enhanced Cordless Telecommunications (DECT) Common Interface. The document covers only the C-plane, because the U-plane is null for all services at the DECT NWK layer.
The standard is organized as follows: clause 4 gives an overview of the NWK layer, clause 5 summarizes the procedure families, clauses 6 to 8 define message contents and message structures, and clause 9 starts the Call Control procedures.
| Annex | What it covers |
|---|---|
| Annex D | DECT standard character sets, including the coding used for DECT text elements |
| Annex I | Distributed Communications coding used when the protocol discriminator points to that content |
What are the key requirements of SIST EN 300 175-5 V2.1.1:2008?
The document is built around signalling rules for the NWK layer, not user payload. In practice, that means implementers use it to encode, decode and negotiate control information, service parameters and identities.
- Clause 1 limits the scope to the C-plane and groups NWK procedures into Call Control (CC), Supplementary Services (SS), Connection Oriented Message Service (COMS), ConnectionLess Message Service (CLMS), Mobility Management (MM) and Link Control Entity (LCE). This matters because product support has to be checked family by family, not as one generic "NWK" feature.
- Clause 5 summarizes the procedure families. CC covers call setup, connect, information, service change and release; MM covers identity, authentication, location, access rights, key allocation, parameter retrieval and ciphering; LCE covers data link establishment, re-establishment, release, suspend/resume, queuing and request paging. This tells an implementer which control procedures the device must handle.
- Clause 6 defines message functionality, including message summaries for CC, SS, COMS, CLMS, MM and LCE. It also distinguishes S-FORMAT and B-FORMAT messages, so engineers know which message type applies to interactive signalling and which applies to broadcast-oriented functions.
- Clause 7 defines S-FORMAT coding rules, including the Protocol Discrimination (PD) element, Transaction Identifier (TI) element, message type coding and information-element ordering. The ordered variable-length elements let receiving equipment detect the presence of fields without scanning a whole message.
- Clause 7.5 explains coding rules such as extensions of codesets, locking shift and non-locking shift procedures, repeated elements and fixed-length versus variable-length information elements. In practice, this is the part to check when a decoder or tester has to parse mixed message content reliably.
- Clause 7.7 defines many service-critical information elements such as CALL-ATTRIBUTES, CONNECTION-ATTRIBUTES, IWU-ATTRIBUTES, TERMINAL-CAPABILITY, SERVICE-CHANGE-INFO, REJECT-REASON, RES and RS. These elements carry the parameters that control bearer type, routing, symmetry, identities, authentication, ciphering and negotiated capability.
- Clause 8 defines B-FORMAT message structures for LCE request paging and CLMS-FIXED messages. The standard gives short, long and extended formats, and the paging formats include default values for missing fields when used with the defined address structures.
- Clause 8.3 limits CLMS-FIXED messages to complete sections and a maximum of six sections. That matters for conformance, because the receiver must handle the whole section structure as delivered.
What terms does SIST EN 300 175-5 V2.1.1:2008 define?
- Digital Enhanced Cordless Telecommunications (DECT) - the cordless telecom system whose Common Interface is specified by this document.
- Network (NWK) layer - layer 3 of the DECT protocol stack, where the control signalling defined here operates.
- Control plane (C-plane) - the signalling part of the NWK layer; this standard specifies only this plane.
- User plane (U-plane) - the traffic plane for user data; this part of the NWK layer is null in this standard.
- Call Control (CC) - the procedure family for call establishment, information transfer, service change and release.
- Mobility Management (MM) - the procedure family for identity, authentication, location and access-right handling.
- Link Control Entity (LCE) - the procedure family for data-link control, including paging and link establishment.
Who uses SIST EN 300 175-5 V2.1.1:2008?
DECT equipment designers use this standard to implement the NWK control plane in portable parts and fixed parts. Test laboratories and certification teams use it to verify message coding, identity handling, paging and service negotiation.
It is also relevant to telecom integrators and buyers who need to confirm support for DECT signalling, supplementary services, mobility features and NG-DECT-related capabilities such as wideband speech and improved data services.
Which standards are used with SIST EN 300 175-5 V2.1.1:2008?
The document uses ITU-T Recommendation X.200 and ITU-T Recommendation X.210 for layered-model principles and terminology. It refers to EN 300 403-1 for variable-length information-element principles.
It also uses EN 300 175-3 for MAC-layer and bearer-related context, EN 300 175-4 for U-plane link and dedicated-bearer details, and EN 300 175-6 for identities and addressing. For specific content coding, it refers to EN 300 196-1 for supplementary-service facility coding and to annex D and annex I of this document for character sets and distributed-communications coding.
What does the SIST EN 300 175-5 V2.1.1:2008 document contain?
The document contains overview sections, procedure summaries, message summaries and detailed coding tables for DECT NWK signalling. It includes figures for message layouts, information-element formats, and S-FORMAT and B-FORMAT structures.
It also contains detailed definitions for many information elements used in call control, supplementary services, mobility management, interworking and paging. For implementers and test engineers, these tables and figures are the main reference for encoding, decoding and validating DECT control messages.
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Frequently Asked Questions
SIST EN 300 175-5 V2.1.1:2008 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: The present document is one of the parts of the specification of the Digital Enhanced Cordless Telecommunications (DECT) Common Interface (CI). This part of the DECT CI specifies the Network (NWK) layer. The NWK layer is part 5 of the EN 300 175 and layer 3 of the DECT protocol stack. The present document only specifies the C-plane (control plane) of the DECT NWK layer. It contains no specification for the U-plane (user plane) because the U-plane is null for all services at the DECT NWK layer. The C-plane contains all of the internal signalling information, and the NWK layer protocols are grouped into the following families of procedures: • Call Control (CC); • Supplementary Services (SS); • Connection Oriented Message Service (COMS); • ConnectionLess Message Service (CLMS); • Mobility Management (MM); • Link Control Entity (LCE). The present document uses the layered model principles and terminology as described in ITU-T Recommendation X.200 and ITU-T Recommendation X.210. The present document includes New Generation DECT, a further development of the DECT standard introducing wideband speech, improved data services, new slot types and other technical enhancements.
The present document is one of the parts of the specification of the Digital Enhanced Cordless Telecommunications (DECT) Common Interface (CI). This part of the DECT CI specifies the Network (NWK) layer. The NWK layer is part 5 of the EN 300 175 and layer 3 of the DECT protocol stack. The present document only specifies the C-plane (control plane) of the DECT NWK layer. It contains no specification for the U-plane (user plane) because the U-plane is null for all services at the DECT NWK layer. The C-plane contains all of the internal signalling information, and the NWK layer protocols are grouped into the following families of procedures: • Call Control (CC); • Supplementary Services (SS); • Connection Oriented Message Service (COMS); • ConnectionLess Message Service (CLMS); • Mobility Management (MM); • Link Control Entity (LCE). The present document uses the layered model principles and terminology as described in ITU-T Recommendation X.200 and ITU-T Recommendation X.210. The present document includes New Generation DECT, a further development of the DECT standard introducing wideband speech, improved data services, new slot types and other technical enhancements.
SIST EN 300 175-5 V2.1.1:2008 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 V2.1.1:2008 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 2.1.1SIST EN 300 175-5 V2.1.1:2008en01-marec-2008SIST EN 300 175-5 V2.1.1:2008SLOVENSKI
STANDARD
ETSI ETSI EN 300 175-5 V2.1.1 (2007-08) 2
Reference REN/DECT-000241-5 Keywords DECT, IMT-2000, mobility, radio, TDD, TDMA
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© European Telecommunications Standards Institute 2007. All rights reserved.
DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the benefit of its Members. TIPHONTM and the TIPHON logo are Trade Marks currently being registered by ETSI for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. SIST EN 300 175-5 V2.1.1:2008
ETSI ETSI EN 300 175-5 V2.1.1 (2007-08) 3
Contents Intellectual Property Rights.15 Foreword.15 1 Scope.16 2 References.17 3 Definitions and abbreviations.21 3.1 Definitions.21 3.2 Abbreviations.23 4 Overview of the NWK layer.26 5 Overview of procedures.28 5.1 General.28 5.2 Overview of Call Control (CC).28 5.2.1 General.28 5.2.2 Call establishment.28 5.2.2.1 Call setup.28 5.2.2.2 Service negotiation.29 5.2.3 Call connect.29 5.2.4 Call information.29 5.2.5 Service change.30 5.2.6 Call release.30 5.3 Overview of Supplementary Services (SS).30 5.3.1 General.30 5.3.2 Keypad protocol.31 5.3.3 Feature key management protocol.31 5.3.4 Functional protocol.31 5.4 Overview of Connection Oriented Message Service (COMS).31 5.4.1 General.31 5.4.2 COMS establishment.32 5.4.3 Service negotiation.32 5.4.4 COMS connect.32 5.4.5 COMS data transfer.32 5.4.6 COMS suspend and resume.32 5.4.7 COMS release.33 5.5 Overview of ConnectionLess Message Service (CLMS).33 5.5.1 Fixed length message service.33 5.5.2 Variable length message service.33 5.6 Overview of Mobility Management (MM).33 5.6.1 General.33 5.6.2 Identity procedures.34 5.6.3 Authentication procedures.34 5.6.4 Location procedures.35 5.6.5 Access rights procedures.35 5.6.6 Key allocation procedure.35 5.6.7 Parameter retrieval procedure.35 5.6.8 Ciphering related procedure.36 5.6.9 External protocol information procedure.36 5.7 Overview of Link Control Entity (LCE).36 5.7.1 General.36 5.7.2 Data Link Endpoint Identifier (DLEI).36 5.7.3 Data link establishment.37 5.7.4 Data link re-establishment.37 5.7.5 Data link release.37 5.7.6 Data link suspend and resume.37 5.7.7 Queuing of messages.38 SIST EN 300 175-5 V2.1.1:2008
ETSI ETSI EN 300 175-5 V2.1.1 (2007-08) 4
5.7.8 Request paging.38 6 Message functional definitions.38 6.1 Overview of message structures.38 6.1.1 Messages.38 6.1.2 Information elements.39 6.2 Message summaries.39 6.2.1 Summary of CC messages.39 6.2.2 Summary of CISS messages.40 6.2.3 Summary of COMS messages.40 6.2.4 Summary of CLMS messages.40 6.2.5 Summary of MM messages.41 6.2.6 Summary of LCE messages.41 6.3 S-FORMAT message functional contents.42 6.3.1 S-FORMAT message overview.42 6.3.2 CC-messages.42 6.3.2.1 {CC-SETUP}.42 6.3.2.2 {CC-INFO}.44 6.3.2.3 {CC-SETUP-ACK}.45 6.3.2.4 {CC-CALL-PROC}.46 6.3.2.5 {CC-ALERTING}.47 6.3.2.6 {CC-CONNECT}.48 6.3.2.7 {CC-CONNECT-ACK}.49 6.3.2.8 {CC-RELEASE}.49 6.3.2.9 {CC-RELEASE-COM}.50 6.3.2.10 {CC-SERVICE-CHANGE}.51 6.3.2.11 {CC-SERVICE-ACCEPT}.52 6.3.2.12 {CC-SERVICE-REJECT}.52 6.3.2.13 {CC-NOTIFY}.53 6.3.2.14 {IWU-INFO}.53 6.3.3 SS-messages (call related and call independent).54 6.3.3.1 {FACILITY}.54 6.3.3.2 {HOLD}.54 6.3.3.3 {HOLD-ACK}.55 6.3.3.4 {HOLD-REJECT}.55 6.3.3.5 {RETRIEVE}.55 6.3.3.6 {RETRIEVE-ACK}.56 6.3.3.7 {RETRIEVE-REJECT}.56 6.3.3.8 {CISS-REGISTER}.57 6.3.3.9 {CISS-RELEASE-COM}.57 6.3.4 COMS-messages.58 6.3.4.1 {COMS-SETUP}.58 6.3.4.2 {COMS-INFO}.58 6.3.4.3 {COMS-ACK}.59 6.3.4.4 {COMS-CONNECT}.59 6.3.4.5 {COMS-RELEASE}.60 6.3.4.6 {COMS-RELEASE-COM}.60 6.3.4.7 {COMS-NOTIFY}.61 6.3.5 CLMS-message.61 6.3.5.1 {CLMS-VARIABLE}.61 6.3.6 MM-messages.62 6.3.6.1 {ACCESS-RIGHTS-ACCEPT}.62 6.3.6.2 {ACCESS-RIGHTS-REJECT}.62 6.3.6.3 {ACCESS-RIGHTS-REQUEST}.63 6.3.6.4 {ACCESS-RIGHTS-TERMINATE-ACCEPT}.63 6.3.6.5 {ACCESS-RIGHTS-TERMINATE-REJECT}.64 6.3.6.6 {ACCESS-RIGHTS-TERMINATE-REQUEST}.64 6.3.6.7 {AUTHENTICATION-REJECT}.65 6.3.6.8 {AUTHENTICATION-REPLY}.65 6.3.6.9 {AUTHENTICATION-REQUEST}.66 6.3.6.10 {CIPHER-REJECT}.66 6.3.6.11 {CIPHER-REQUEST}.67 SIST EN 300 175-5 V2.1.1:2008
ETSI ETSI EN 300 175-5 V2.1.1 (2007-08) 5
6.3.6.12 {CIPHER-SUGGEST}.67 6.3.6.13 {DETACH}.68 6.3.6.14 {IDENTITY-REPLY}.68 6.3.6.15 {IDENTITY-REQUEST}.69 6.3.6.16 {KEY-ALLOCATE}.69 6.3.6.17 {LOCATE-ACCEPT}.70 6.3.6.18 {LOCATE-REJECT}.70 6.3.6.19 {LOCATE-REQUEST}.71 6.3.6.20 {MM-INFO-ACCEPT}.72 6.3.6.21 {MM-INFO-REJECT}.72 6.3.6.22 {MM-INFO-REQUEST}.73 6.3.6.23 {MM-INFO-SUGGEST}.74 6.3.6.24 {TEMPORARY-IDENTITY-ASSIGN}.74 6.3.6.25 {TEMPORARY-IDENTITY-ASSIGN-ACK}.75 6.3.6.26 {TEMPORARY-IDENTITY-ASSIGN-REJ}.75 6.3.6.27 {MM-IWU}.76 6.3.6.28 {MM-NOTIFY}.76 6.3.7 LCE-messages.77 6.3.7.1 {LCE-PAGE-RESPONSE}.77 6.3.7.2 {LCE-PAGE-REJECT}.77 6.4 B-FORMAT message functional contents.78 6.4.1 B-FORMAT message overview.78 6.4.2 {LCE-REQUEST-PAGE}.78 6.4.3 {CLMS-FIXED}.79 7 S-FORMAT message structures.79 7.1 Overview.79 7.2 Protocol Discrimination (PD) element.80 7.3 Transaction Identifier (TI) element.80 7.4 Message type element.81 7.4.1 Messages for CC.82 7.4.2 Messages for SS.82 7.4.3 Messages for COMS.82 7.4.4 Messages for CLMS.83 7.4.5 Messages for MM.83 7.4.6 Messages for LCE.83 7.5 Other information elements.84 7.5.1 Coding rules.84 7.5.2 Extensions of codesets.86 7.5.3 Locking shift procedure.86 7.5.4 Non-locking shift procedure.87 7.5.5 Display and keypad elements.87 7.5.6 Repeated elements.87 7.6 Fixed length information elements.88 7.6.1 Summary.88 7.6.2 Sending complete, delimiter request and use TPUI.88 7.6.3 Repeat indicator.89 7.6.4 Basic service.89 7.6.5 Single display.90 7.6.6 Single keypad.90 7.6.7 Release reason.90 7.6.8 Signal.91 7.6.9 Timer restart.92 7.6.10 Test hook control.93 7.7 Variable length information elements.93 7.7.1 Summary.93 7.7.2 Allocation type.95 7.7.3 Alphanumeric.95 7.7.4 Auth type.96 7.7.5 Call attributes.98 7.7.6 Call identity.100 7.7.7 Called party number.100 SIST EN 300 175-5 V2.1.1:2008
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7.7.8 Called party subaddress.101 7.7.9 Calling party number.102 7.7.10 Cipher info.103 7.7.11 Connection attributes.104 7.7.12 Connection identity.106 7.7.13 Duration.107 7.7.14 End-to-end compatibility.108 7.7.15 Facility.111 7.7.16 Feature activate.111 7.7.17 Feature indicate.113 7.7.18 Fixed identity.116 7.7.19 Identity type.116 7.7.20 Info type.117 7.7.21 InterWorking Unit (IWU) attributes.118 7.7.22 IWU packet.123 7.7.23 IWU to IWU.124 7.7.24 Key.126 7.7.25 Location area.126 7.7.26 Multi-display.127 7.7.27 Multi-keypad.128 7.7.28 NetWorK (NWK) assigned identity.128 7.7.29 Network parameter.129 7.7.30 Portable identity.130 7.7.31 Progress indicator.134 7.7.32 RAND.135 7.7.33 Rate parameters.135 7.7.34 Reject reason.136 7.7.35 RES.137 7.7.36 RS.138 7.7.37 Segmented info.138 7.7.38 Service change info.139 7.7.39 Service class.140 7.7.40 Setup capability.141 7.7.41 Terminal capability.142 7.7.42 Transit delay.146 7.7.43 Window size.147 7.7.44 ZAP field.147 7.7.45 Escape to proprietary.148 7.7.46 Model identifier.148 7.7.47 MMS Generic Header.149 7.7.48 MMS Object Header.149 7.7.49 MMS Extended header.150 7.7.50 Time-Date.150 7.7.51 Ext h/o indicator.152 7.7.52 Authentication Reject Parameter.152 7.7.53 Calling party Name.153 7.7.54 Codec List.153 8 B-FORMAT message structures.155 8.1 General.155 8.2 LCE request paging messages.155 8.2.1 Short format message.156 8.2.2 Long format message.158 8.3 CLMS-FIXED messages.161 8.3.1 General message structure.161 8.3.2 Message elements.161 8.3.3 Standard message structures.163 8.3.3.1 General.163 8.3.3.2 Messages using 4-bit characters.163 8.3.3.3 Messages using 8-bit characters.163 9 Call Control (CC) procedures.164 SIST EN 300 175-5 V2.1.1:2008
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9.1 General.164 9.2 Call Control (CC) states.167 9.2.1 States at PT.167 9.2.1.1 State T-00: "NULL".167 9.2.1.2 State T-19: "RELEASE PENDING".167 9.2.1.3 State T-10: "ACTIVE".167 9.2.1.4 State T-01: "CALL INITIATED".167 9.2.1.5 State T-02: "OVERLAP SENDING".167 9.2.1.6 State T-03: "CALL PROCEEDING".167 9.2.1.7 State T-04: "CALL DELIVERED".167 9.2.1.8 State T-06: "CALL PRESENT".167 9.2.1.9 State T-07: "CALL RECEIVED".167 9.2.1.10 State T-08: "CONNECT PENDING".167 9.2.2 States at FT.168 9.2.2.1 State F-00: "NULL".168 9.2.2.2 State F-19: "RELEASE PENDING".168 9.2.2.3 State F-10: "ACTIVE".168 9.2.2.4 State F-01: "CALL-INITIATED".168 9.2.2.5 State F-02: "OVERLAP SENDING".168 9.2.2.6 State F-03: "CALL PROCEEDING".168 9.2.2.7 State F-04: "CALL DELIVERED".168 9.2.2.8 State F-06: "CALL PRESENT".168 9.2.2.9 State F-07: "CALL RECEIVED".168 9.2.3 Optional states (PT and FT).169 9.2.3.1 States T-22 and F-22: "OVERLAP RECEIVING".169 9.2.3.2 States T-23 and F-23: "INCOMING CALL PROCEEDING".169 9.3 Call establishment procedures.169 9.3.1 PT initiated call establishment (outgoing call).169 9.3.1.1 Call request.169 9.3.1.2 Call accept or reject.170 9.3.1.3 Selection of lower layer resources.170 9.3.1.4 Connection of U-plane.171 9.3.1.5 Overlap sending.171 9.3.1.6 Call proceeding.172 9.3.1.7 Call confirmation.172 9.3.1.8 Call connection.173 9.3.1.9 Expiry of timer .
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