SIST EN 300 175-5 V1.8.1:2006
(Main)Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 5: Network (NWK) layer
General Information
- 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
Overview
SIST EN 300 175-5 V1.8.1:2006 specifies the Network (NWK) layer-part of the Digital Enhanced Cordless Telecommunications (DECT) Common Interface (CI). This standard details the third layer of the DECT protocol stack, focusing solely on the C-plane (control plane) of the NWK layer, which is responsible for signaling and internal communications within DECT networks. The document is maintained by SIST and aligns with the EN 300 175-5 (ETSI), ensuring compatibility across European telecommunications systems.
By providing a unified approach to NWK signaling, this standard facilitates interoperability, security, and flexibility for voice and data services in DECT environments.
Key Topics
- Layered Model Principles: The standard employs concepts and terminology from ITU-T Recommendations X.200 and X.210, reinforcing a modular and structured approach to the DECT protocol stack.
- Focus on Control Plane (C-plane): Only the control functions are specified at the NWK layer, since the user plane (U-plane) is inactive for all services at this level.
- Signaling Procedure Families:
- Call Control (CC): Handles call setup, management, and release.
- Supplementary Services (SS): Supports additional services such as keypad management and feature activation.
- Connection Oriented Message Service (COMS): Facilitates messages with connection establishment for reliable data transfer.
- ConnectionLess Message Service (CLMS): Manages messages that do not require a dedicated connection.
- Mobility Management (MM): Oversees authentication, identity, location, and access rights, supporting seamless roaming and security.
- Link Control Entity (LCE): Responsible for establishing, maintaining, and releasing data links as well as message queuing.
Applications
The Digital Enhanced Cordless Telecommunications (DECT) Network Layer standard is critical for:
- Cordless Telephony: Enables standardized communications and advanced features in residential, business, and public wireless telephony systems.
- Enterprise Wireless Solutions: Supports large-scale deployments in business environments, offering secure, seamless handover and mobility management.
- Wireless Data Services: Facilitates application integration and messaging using established DECT infrastructure.
- Interoperability: Ensures compatibility between DECT devices from different manufacturers through the precise definition of signaling protocols and message formats.
- Security and Mobility: Integrates robust authentication, encryption initiation, and secure channel setup for sensitive environments.
Related Standards
For a comprehensive DECT Common Interface implementation, consider the following related standards:
- SIST EN 300 175-1: General Overview and common requirements for the DECT CI
- SIST EN 300 175-2: Physical Layer (layer 1)
- SIST EN 300 175-3: Medium Access Control (MAC) Layer (layer 2)
- SIST EN 300 175-4: Data Link Control (DLC) Layer
- SIST EN 300 175-6: Identities and addressing
- SIST EN 300 175-7: Security features
- ITU-T X.200 & X.210: Reference models for OSI protocol architecture
By integrating SIST EN 300 175-5 V1.8.1:2006 alongside other relevant standards, organizations can ensure reliable, scalable, and interoperable DECT networks, meeting rigorous requirements for digital cordless telecommunications.
Keywords: DECT, Network Layer, Common Interface, NWK, cordless telephony, signaling, mobility management, call control, wireless communications, standardization, C-plane
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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
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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
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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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