SIST EN 300 175-5 V1.8.1:2006
(Main)Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 5: Network (NWK) layer
- Abstract
The present document gives an introduction and overview of the complete Digital Enhanced Cordless Telecommunications (DECT) Common Interface (CI). The present document 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.
- Status
- Published
- Publication Date
- 28-Feb-2006
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Mar-2006
- Due Date
- 01-Mar-2006
- Completion Date
- 01-Mar-2006
SIST EN 300 175-5 V1.8.1:2006 is the Slovenian standard for the Digital Enhanced Cordless Telecommunications (DECT) Common Interface (CI), Part 5, covering the Network (NWK) layer. It specifies DECT layer 3 signalling for the control plane, so it is the document that defines how DECT fixed and portable parts exchange control messages for calls, mobility, supplementary services, and related procedures.
For implementers, this part is mainly a message-coding and procedure reference: it tells you which NWK procedures exist, how messages are structured, and which information elements appear in each message.
What does SIST EN 300 175-5 V1.8.1:2006 specify?
SIST EN 300 175-5 V1.8.1:2006 specifies the DECT NWK layer, but only the C-plane (control plane). The scope states that the U-plane is not specified here because the U-plane is null for all services at the DECT NWK layer.
The document is organized as follows:
- Clause 1 - Scope
- Clause 2 - References
- Clause 3 - Definitions and abbreviations
- Clause 4 - Overview of the NWK layer
- Clause 5 - Overview of procedures
- Clause 6 - Message functional definitions
- Clause 7 - S-FORMAT message structures
- Clause 8 - B-FORMAT message structures
- Clause 9 - Call Control (CC) procedures
Clause 5 groups the NWK procedures into six families:
| Procedure family | What it covers |
|---|---|
| Call Control (CC) | Call setup, connect, information, service change, and release |
| Supplementary Services (SS) | Keypad, feature key management, and functional supplementary service signalling |
| Connection Oriented Message Service (COMS) | Connection-oriented message exchange, including setup, data transfer, suspend/resume, and release |
| ConnectionLess Message Service (CLMS) | Fixed and variable length connectionless message exchange |
| Mobility Management (MM) | Identity, authentication, location, access rights, key allocation, parameter retrieval, ciphering, and external protocol information |
| Link Control Entity (LCE) | Data link establishment, re-establishment, release, suspend/resume, paging, and queuing |
What are the key requirements of SIST EN 300 175-5 V1.8.1:2006?
SIST EN 300 175-5 V1.8.1:2006 defines how DECT NWK signalling is grouped, encoded, and used in practice. The most important points are the procedure families, the message formats, and the information element codings that implementers must follow.
Procedure coverage in clause 5
Clause 5 gives the procedure overview for CC, SS, COMS, CLMS, MM, and LCE. In practice, this is the map of the whole NWK layer: if you are building a DECT stack, it tells you where call handling ends and mobility or link control begins.
Message definitions in clause 6
Clause 6 provides message functional definitions for the main message families and lists the message summaries. This matters because it shows which messages exist for each procedure family and what each message is used for, such as {CC-SETUP}, {COMS-INFO}, {ACCESS-RIGHTS-REQUEST}, or {LCE-PAGE-REJECT}.
S-FORMAT structure in clause 7
Clause 7 defines the S-FORMAT message structure, including the Protocol Discriminator (PD), Transaction Identifier (TI), Message Type, and other information elements. It also gives the coding rules for fixed-length and variable-length information elements, repeated elements, locking and non-locking shift procedures, and escape to proprietary coding. This is the core reference for encoding and decoding DECT NWK control messages.
B-FORMAT structure in clause 8
Clause 8 defines B-FORMAT messages, including LCE request paging messages and CLMS-FIXED messages. It states that CLMS-FIXED messages use extended format and are built from message sections, which matters when an implementation must carry fixed-format message data or paging information.
CC procedures in clause 9
Clause 9 gives the Call Control procedures and CC states. That is the operational part of the call handling model, so it is the section to use when implementing call setup, call progress, and release behaviour.
Information element codings
The body of clause 7 includes detailed codings for elements such as calling party number, called party number, connection attributes, terminal capability, window size, cipher info, and identities. These codings matter because they determine the actual bits exchanged on the air interface and therefore interoperability between vendor implementations.
What terms does SIST EN 300 175-5 V1.8.1:2006 define?
- C-plane - The control plane that carries internal signalling in the DECT NWK layer.
- Protocol Discriminator (PD) - The field that identifies the message family so the receiver can interpret the rest of the message correctly.
- Transaction Identifier (TI) - The field that ties messages to a specific transaction.
- Repeat indicator - An element used to carry prioritized or non-prioritized lists of information elements.
- Segmented info - An element that shows a variable-length information element is split across several consecutive messages.
- Portable identity - A portable-part identity such as IPUI, IPEI, or TPUI, used in registration and mobility signalling.
- NWK assigned identity - A network-assigned identity, including temporary identities such as TMSI/P-TMSI.
Who uses SIST EN 300 175-5 V1.8.1:2006?
DECT equipment designers and protocol developers use this standard to implement the NWK signalling in portable parts and fixed parts. Test engineers and certification teams use it to check message coding, state handling, and information element contents.
Quality managers, buyers, and integrators use it to verify that a product or subsystem supports the DECT control procedures they need, such as call control, mobility management, paging, and message services. It is also relevant to vendors working on interoperability between DECT devices from different manufacturers.
Which standards are used with SIST EN 300 175-5 V1.8.1:2006?
| Standard | What it contributes |
|---|---|
| ITU-T Recommendation X.200 | Layered model principles and terminology |
| ITU-T Recommendation X.210 | Layered model principles and terminology |
| EN 300 403-1 | Principles for variable-length information elements |
| EN 300 175-3 | Use of the maximum packet lifetime and related attributes |
| EN 300 175-4 | U-plane link number details and related link coding |
| EN 300 175-6 | Portable identity coding details |
| EN 300 757 | LRMS (E-profile) service reference |
| EN 300 765-1 | RAP 1 profile and multiport CTA references |
| EN 300 765-2 | RAP 2 profile reference |
| TS 101 863 | DECT/UMTS interworking profile reference |
What does the SIST EN 300 175-5 V1.8.1:2006 document contain?
The document contains message summaries, detailed message definitions, and coding tables for the DECT NWK layer. It includes figures and tables for S-FORMAT and B-FORMAT message structures, fixed and variable length information elements, and the bit-level coding of identities, attributes, numbers, capability fields, and control parameters.
It also contains procedure overviews for CC, SS, COMS, CLMS, MM, and LCE, plus the CC state descriptions in clause 9. For implementation and testing, this makes the document a reference for both message syntax and signalling behaviour.
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Frequently Asked Questions
SIST EN 300 175-5 V1.8.1:2006 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 gives an introduction and overview of the complete Digital Enhanced Cordless Telecommunications (DECT) Common Interface (CI). The present document 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 gives an introduction and overview of the complete Digital Enhanced Cordless Telecommunications (DECT) Common Interface (CI). The present document 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.
SIST EN 300 175-5 V1.8.1:2006 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 V1.8.1:2006 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 1.8.1SIST EN 300 175-5 V1.8.1:2006en01-marec-2006SIST EN 300 175-5 V1.8.1:2006SLOVENSKI
STANDARD
ETSI ETSI EN 300 175-5 V1.8.1 (2004-11) 2
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ETSI ETSI EN 300 175-5 V1.8.1 (2004-11) 3
Contents Intellectual Property Rights.14 Foreword.14 1 Scope.15 2 References.15 3 Definitions and abbreviations.19 3.1 Definitions.19 3.2 Abbreviations.21 4 Overview of the NWK layer.24 5 Overview of procedures.26 5.1 General.26 5.2 Overview of Call Control (CC).26 5.2.1 General.26 5.2.2 Call establishment.26 5.2.2.1 Call setup.26 5.2.2.2 Service negotiation.27 5.2.3 Call connect.27 5.2.4 Call information.27 5.2.5 Service change.28 5.2.6 Call release.28 5.3 Overview of Supplementary Services (SS).28 5.3.1 General.28 5.3.2 Keypad protocol.29 5.3.3 Feature key management protocol.29 5.3.4 Functional protocol.29 5.4 Overview of Connection Oriented Message Service (COMS).29 5.4.1 General.29 5.4.2 COMS establishment.30 5.4.3 Service negotiation.30 5.4.4 COMS connect.30 5.4.5 COMS data transfer.30 5.4.6 COMS suspend and resume.30 5.4.7 COMS release.31 5.5 Overview of ConnectionLess Message Service (CLMS).31 5.5.1 Fixed length message service.31 5.5.2 Variable length message service.31 5.6 Overview of Mobility Management (MM).31 5.6.1 General.31 5.6.2 Identity procedures.32 5.6.3 Authentication procedures.32 5.6.4 Location procedures.33 5.6.5 Access rights procedures.33 5.6.6 Key allocation procedure.33 5.6.7 Parameter retrieval procedure.33 5.6.8 Ciphering related procedure.34 5.6.9 External protocol information procedure.34 5.7 Overview of Link Control Entity (LCE).34 5.7.1 General.34 5.7.2 Data Link Endpoint Identifier (DLEI).34 5.7.3 Data link establishment.35 5.7.4 Data link re-establishment.35 5.7.5 Data link release.35 5.7.6 Data link suspend and resume.35 5.7.7 Queuing of messages.36 SIST EN 300 175-5 V1.8.1:2006
ETSI ETSI EN 300 175-5 V1.8.1 (2004-11) 4
5.7.8 Request paging.36 6 Message functional definitions.36 6.1 Overview of message structures.36 6.1.1 Messages.36 6.1.2 Information elements.37 6.2 Message summaries.37 6.2.1 Summary of CC messages.37 6.2.2 Summary of CISS messages.38 6.2.3 Summary of COMS messages.38 6.2.4 Summary of CLMS messages.38 6.2.5 Summary of MM messages.39 6.2.6 Summary of LCE messages.39 6.3 S-FORMAT message functional contents.40 6.3.1 S-FORMAT message overview.40 6.3.2 CC-messages.41 6.3.2.1 {CC-SETUP}.41 6.3.2.2 {CC-INFO}.43 6.3.2.3 {CC-SETUP-ACK}.44 6.3.2.4 {CC-CALL-PROC}.45 6.3.2.5 {CC-ALERTING}.46 6.3.2.6 {CC-CONNECT}.47 6.3.2.7 {CC-CONNECT-ACK}.48 6.3.2.8 {CC-RELEASE}.48 6.3.2.9 {CC-RELEASE-COM}.49 6.3.2.10 {CC-SERVICE-CHANGE}.50 6.3.2.11 {CC-SERVICE-ACCEPT}.50 6.3.2.12 {CC-SERVICE-REJECT}.51 6.3.2.13 {CC-NOTIFY}.52 6.3.2.14 {IWU-INFO}.52 6.3.3 SS-messages (call related and call independent).53 6.3.3.1 {FACILITY}.53 6.3.3.2 {HOLD}.53 6.3.3.3 {HOLD-ACK}.54 6.3.3.4 {HOLD-REJECT}.54 6.3.3.5 {RETRIEVE}.54 6.3.3.6 {RETRIEVE-ACK}.55 6.3.3.7 {RETRIEVE-REJECT}.55 6.3.3.8 {CISS-REGISTER}.56 6.3.3.9 {CISS-RELEASE-COM}.56 6.3.4 COMS-messages.57 6.3.4.1 {COMS-SETUP}.57 6.3.4.2 {COMS-INFO}.57 6.3.4.3 {COMS-ACK}.58 6.3.4.4 {COMS-CONNECT}.58 6.3.4.5 {COMS-RELEASE}.58 6.3.4.6 {COMS-RELEASE-COM}.59 6.3.4.7 {COMS-NOTIFY}.59 6.3.5 CLMS-message.60 6.3.5.1 {CLMS-VARIABLE}.60 6.3.6 MM-messages.61 6.3.6.1 {ACCESS-RIGHTS-ACCEPT}.61 6.3.6.2 {ACCESS-RIGHTS-REJECT}.61 6.3.6.3 {ACCESS-RIGHTS-REQUEST}.62 6.3.6.4 {ACCESS-RIGHTS-TERMINATE-ACCEPT}.62 6.3.6.5 {ACCESS-RIGHTS-TERMINATE-REJECT}.63 6.3.6.6 {ACCESS-RIGHTS-TERMINATE-REQUEST}.63 6.3.6.7 {AUTHENTICATION-REJECT}.64 6.3.6.8 {AUTHENTICATION-REPLY}.64 6.3.6.9 {AUTHENTICATION-REQUEST}.65 6.3.6.10 {CIPHER-REJECT}.65 6.3.6.11 {CIPHER-REQUEST}.66 SIST EN 300 175-5 V1.8.1:2006
ETSI ETSI EN 300 175-5 V1.8.1 (2004-11) 5
6.3.6.12 {CIPHER-SUGGEST}.66 6.3.6.13 {DETACH}.67 6.3.6.14 {IDENTITY-REPLY}.68 6.3.6.15 {IDENTITY-REQUEST}.68 6.3.6.16 {KEY-ALLOCATE}.69 6.3.6.17 {LOCATE-ACCEPT}.69 6.3.6.18 {LOCATE-REJECT}.70 6.3.6.19 {LOCATE-REQUEST}.70 6.3.6.20 {MM-INFO-ACCEPT}.71 6.3.6.21 {MM-INFO-REJECT}.71 6.3.6.22 {MM-INFO-REQUEST}.72 6.3.6.23 {MM-INFO-SUGGEST}.73 6.3.6.24 {TEMPORARY-IDENTITY-ASSIGN}.73 6.3.6.25 {TEMPORARY-IDENTITY-ASSIGN-ACK}.74 6.3.6.26 {TEMPORARY-IDENTITY-ASSIGN-REJ}.74 6.3.6.27 {MM-IWU}.75 6.3.6.28 {MM-NOTIFY}.75 6.3.7 LCE-messages.76 6.3.7.1 {LCE-PAGE-RESPONSE}.76 6.3.7.2 {LCE-PAGE-REJECT}.76 6.4 B-FORMAT message functional contents.77 6.4.1 B-FORMAT message overview.77 6.4.2 {LCE-REQUEST-PAGE}.77 6.4.3 {CLMS-FIXED}.78 7 S-FORMAT message structures.78 7.1 Overview.78 7.2 Protocol Discrimination (PD) element.79 7.3 Transaction Identifier (TI) element.79 7.4 Message type element.80 7.4.1 Messages for CC.81 7.4.2 Messages for SS.81 7.4.3 Messages for COMS.81 7.4.4 Messages for CLMS.82 7.4.5 Messages for MM.82 7.4.6 Messages for LCE.82 7.5 Other information elements.83 7.5.1 Coding rules.83 7.5.2 Extensions of codesets.85 7.5.3 Locking shift procedure.85 7.5.4 Non-locking shift procedure.86 7.5.5 Display and keypad elements.86 7.5.6 Repeated elements.86 7.6 Fixed length information elements.87 7.6.1 Summary.87 7.6.2 Sending complete, delimiter request and use TPUI.87 7.6.3 Repeat indicator.88 7.6.4 Basic service.88 7.6.5 Single display.89 7.6.6 Single keypad.89 7.6.7 Release reason.89 7.6.8 Signal.90 7.6.9 Timer restart.91 7.6.10 Test hook control.92 7.7 Variable length information elements.92 7.7.1 Summary.92 7.7.2 Allocation type.94 7.7.3 Alphanumeric.95 7.7.4 Auth type.96 7.7.5 Call attributes.97 7.7.6 Call identity.99 7.7.7 Called party number.100 SIST EN 300 175-5 V1.8.1:2006
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7.7.8 Called party subaddress.101 7.7.9 Calling party number.101 7.7.10 Cipher info.102 7.7.11 Connection attributes.103 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.115 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.151 7.7.52 Authentication Reject Parameter.152 8 B-FORMAT message structures.152 8.1 General.152 8.2 LCE request paging messages.153 8.2.1 Short format message.154 8.2.2 Long format message.156 8.3 CLMS-FIXED messages.158 8.3.1 General message structure.158 8.3.2 Message elements.159 8.3.3 Standard message structures.160 8.3.3.1 General.160 8.3.3.2 Messages using 4-bit characters.161 8.3.3.3 Messages using 8-bit characters.161 9 Call Control (CC) procedures.161 9.1 General.161 9.2 Call Control (CC) states.164 SIST EN 300 175-5 V1.8.1:2006
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9.2.1 States at PT.164 9.2.1.1 State T-00: "NULL".164 9.2.1.2 State T-19: "RELEASE PENDING".164 9.2.1.3 State T-10: "ACTIVE".164 9.2.1.4 State T-01: "CALL INITIATED".164 9.2.1.5 State T-02: "OVERLAP SENDING".164 9.2.1.6 State T-03: "CALL PROCEEDING".164 9.2.1.7 State T-04: "CALL DELIVERED".164 9.2.1.8 State T-06: "CALL PRESENT".164 9.2.1.9 State T-07: "CALL RECEIVED".164 9.2.1.10 State T-08: "CONNECT PENDING".164 9.2.2 States at FT.165 9.2.2.1 State F-00: "NULL".165 9.2.2.2 State F-19: "RELEASE PENDING".165 9.2.2.3 State F-10: "ACTIVE".165 9.2.2.4 State F-01: "CALL-INITIATED".165 9.2.2.5 State F-02: "OVERLAP SENDING".165 9.2.2.6 State F-03: "CALL PROCEEDING".165 9.2.2.7 State F-04: "CALL DELIVERED".165 9.2.2.8 State F-06: "CALL PRESENT".165 9.2.2.9 State F-07: "CALL RECEIVED".165 9.2.3 Optional states (PT and FT).166 9.2.3.1 States T-22 and F-22: "OVERLAP RECEIVING".166 9.2.3.2 States T-23 and F-23: "INCOMING CALL PROCEEDING".166 9.3 Call establishment procedures.166 9.3.1 PT initiated call establishment (outgoing call).166 9.3.1.1 Call request.166 9.3.1.2 Call accept or reject.167 9.3.1.3 Selection of lower layer resources.167 9.3.1.4 Connection of U-plane.168 9.3.1.5 Overlap sending.168 9.3.1.6 Call proceeding.169 9.3.1.7 Call confirmation.169 9.3.1.8 Call connection.170 9.3.1.9 Expiry of timer .170 9.3.2 FT initiated call establishment (incoming call).170 9.3.2.1 Call request.
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