SIST EN 300 175-5 V2.1.1:2008
Digital Enhanced Cordless Telecommunications (DECT) - Common Interface (CI) - Part 5: Network (NWK) layer
General Information
- 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
Overview
SIST EN 300 175-5 V2.1.1:2008 defines essential requirements for the Network (NWK) layer within the Digital Enhanced Cordless Telecommunications (DECT) Common Interface (CI). Published by the Slovenian Institute for Standardization (SIST), this standard aligns with ETSI EN 300 175-5 V2.1.1 and is crucial for ensuring interoperability and reliable communication in DECT-based systems.
The NWK layer, constituting Layer 3 of the DECT protocol stack, focuses on the control (C-plane), which encompasses internal signalling information and procedural communication between entities. This document does not specify the user plane (U-plane), as it is null at this layer for all services. The standard follows internationally recognized layered model principles as described in ITU-T Recommendations X.200 and X.210.
Key Topics
Key elements covered in SIST EN 300 175-5 V2.1.1:2008 include:
- Call Control (CC): Procedures for setting up, negotiating, maintaining, and releasing calls in DECT networks.
- Supplementary Services (SS): Management of additional features such as keypad protocols, functional protocols, and feature key management.
- Connection Oriented Message Service (COMS): Protocols enabling the establishment and management of dedicated messaging sessions.
- Connectionless Message Service (CLMS): Support for fixed and variable-length messages without session establishment.
- Mobility Management (MM): Procedures for device authentication, location updating, identity management, access rights, and ciphering.
- Link Control Entity (LCE): Mechanisms for establishing, maintaining, and releasing data links, including paging and queuing.
- Message Structure and Information Elements: Standardized message formats for robust and flexible communication across DECT devices.
- New Generation DECT: Enhancements, such as wideband speech and improved data services, are supported in addition to traditional DECT functionality.
Applications
The practical value of SIST EN 300 175-5 V2.1.1:2008 is evident across a wide range of professional and consumer environments. Key use cases include:
- Cordless Telephony: Provides the protocol foundation for DECT handsets and base stations, ensuring high-quality and interoperable cordless voice communication.
- Business Communications Systems: Enables robust call handling, mobility, and supplementary services in enterprise telephony deployments supporting cordless extensions.
- Home Automation: Facilitates wireless communication between devices in residential environments.
- Industrial Wireless Solutions: Supports secure, mobile communications for operations, staff mobility, and real-time alerts in factories, hospitals, and logistics facilities.
- Enhanced DECT Deployments: Supports next-generation DECT, including wideband audio and improved data services for modern communication needs.
By adhering to this standard, manufacturers and system integrators can ensure compatibility, security, and seamless functionality across diverse DECT devices and networks.
Related Standards
Key standards related to SIST EN 300 175-5 V2.1.1:2008 include:
- EN 300 175 Series: The comprehensive set of standards defining all aspects of the DECT Common Interface, including physical, data link, data, and network layers.
- ITU-T X.200/X.210: Foundational recommendations on the layered model and principles for data communication, referenced in this standard.
- IMT-2000: A family of standards for mobile telecommunications networks, with which DECT systems may interwork.
- Other DECT CI Documents:
- Part 1: Overview
- Part 2: Physical Layer
- Part 3: Medium Access Control (MAC) Layer
- Part 4: Data Link Control (DLC) Layer
Adopting SIST EN 300 175-5 V2.1.1:2008 ensures robust, scalable, and secure operation in DECT-based wireless communication networks across Europe and internationally.
Keywords: DECT, Network Layer, Common Interface, Mobility Management, Call Control, Wireless Communication, Supplementary Services, Protocol Stack, European Standard, Telephony, Interoperability.
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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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