SIST EN 300 175-4 V1.6.1:2003

• Abstract:

  Maintenance update.

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.070.30 - Digital Enhanced Cordless Telecommunications (DECT)
• ICS: 35.100.20 - Data link layer
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: ETSI EN 300 175-4 V1.6.1 (2002-02) - Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 4: Data Link Control (DLC) layer

Overview

SIST EN 300 175-4 V1.6.1:2003 is a Slovenian standard that aligns with the European Telecommunication Standards Institute (ETSI) specification for Digital Enhanced Cordless Telecommunications (DECT). This document focuses on the Common Interface (CI), Part 4: Data Link Control (DLC) layer. As a maintenance update, it clarifies requirements and ensures continued interoperability and reliability for DECT systems, specifically targeting the data link layer responsible for managing data transfer between DECT devices.

The DECT CI standard supports the consistent development and integration of cordless telecommunication systems in both residential and enterprise environments, emphasizing radio communication, data transfer, and efficient service management.

Key Topics

• Data Link Control (DLC) Layer: Describes the functions and procedures for data link establishment, maintenance, and termination within DECT systems.
• C-Plane and U-Plane Services: Outlines the control (C-plane) and user data (U-plane) service procedures for effective communication and resource control.
• Frame Structures & Addressing: Provides specifications for standard frame formats, address formats, sequence number management, and error handling to ensure reliable data transmission.
• Primitives and Service Access Points (SAPs): Defines interactions between the DLC and other protocol layers (MAC, NWK), detailing the primitives and SAPs used for communication and control.
• Connection and Link Management: Elaborates on procedures for connection set-up, modification, release, routing, and handover, supporting advanced DECT network features such as mobility.
• Security Aspects: Includes management of ciphering, key provision, and secure communication setup to address the security requirements for modern wireless networks.

Applications

The practical value of SIST EN 300 175-4 V1.6.1:2003 lies in its direct support for:

• Cordless Telecommunication Devices: Enabling manufacturers to ensure their phones, base stations, and terminals meet international interoperability and performance standards.
• DECT System Integration: Assisting system integrators and telecommunication providers in deploying and maintaining reliable DECT networks in homes, offices, and public environments.
• Interoperable Equipment Design: Providing guidelines for the development of hardware and firmware that reliably communicates across different vendors’ DECT systems.
• Wireless Data Communication: Facilitating robust roaming, handover, and high-quality connectivity in both voice and data-centric DECT applications.
• Network Security and Management: Supporting secure data transfers, encrypted communications, and effective link management essential for business users and service providers.

Related Standards

Implementing SIST EN 300 175-4 V1.6.1:2003 may also require familiarity with the following related standards:

• SIST EN 300 175 Series: Other parts of the DECT Common Interface specification that address physical layer, medium access control, and higher network layers.
• ETSI EN 300 175-4: The European equivalent standard, ensuring alignment across regions and applications.
• DECT Security Standards: Complementary standards providing specifications for authentication, encryption, and privacy in DECT systems.
• International Classification for Standards (ICS): 35.100.20 (Data link layer), 33.070.30 (Cordless telecommunications), for broader context in telecommunications standardization.

Conclusion:
SIST EN 300 175-4 V1.6.1:2003 is essential for any organization involved in the design, deployment, or operation of DECT-based cordless telecommunication equipment. By conforming to this standard, users and manufacturers ensure system compatibility, security, and an optimized communication experience in a rapidly evolving wireless landscape.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 4: Data Link Control (DLC) layer35.100.20Podatkovni povezovalni slojData link layer33.070.30'(&7Digital Enhanced Cordless Telecommunications (DECT)ICS:Ta slovenski standard je istoveten z:EN 300 175-4 Version 1.6.1SIST EN 300 175-4 V1.6.1:2003en01-december-2003SIST EN 300 175-4 V1.6.1:2003SLOVENSKI
STANDARD
ETSI ETSI EN 300 175-4 V1.6.1 (2002-02) 2
Reference REN/DECT-000194-4 Keywords DECT, radio ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
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© European Telecommunications Standards Institute 2002. All rights reserved.
ETSI ETSI EN 300 175-4 V1.6.1 (2002-02) 3 Contents
Intellectual Property Rights.11 Foreword.11 1 Scope.12 2 References.12 3 Definitions, symbols and abbreviations.13 3.1 Definitions.13 3.2 Symbols and abbreviations.14 4 Data Link Control (DLC) layer overview.15 4.1 General.15 4.2 C-Plane services.16 4.3 U-plane services.16 4.4 Lower Layer Management Entity (LLME).19 5 C-plane service characteristics.19 5.1 Data link service (LAPC+Lc).19 5.1.1 General.19 5.1.2 LAPC types of operation.20 5.1.3 Establishment of information transfer modes.20 5.1.3.1 Data Link Identifier (DLI).20 5.1.3.2 LAPC states.20 5.2 Broadcast service (Lb).21 6 Frame structures for C-plane services.22 6.1 Data link service frame structure.22 6.1.1 General frame structure.22 6.1.2 Lc frame delimiting and transparency.23 6.1.3 Transmission order.23 6.1.4 Routing to logical channels.23 6.1.4.1 CF/CLF logical channel.23 6.1.4.2 CS/CLS logical channel.24 6.1.5 Invalid frames.24 6.2 Broadcast service frame structure.25 6.2.1 Standard frame structure.25 6.2.2 Extended frame structure.25 7 Elements of procedures and formats of fields for C-plane peer-to-peer communication.26 7.1 General.26 7.2 Address field formats.26 7.3 Address field parameters.26 7.3.1 REServed bit (RES).26 7.3.2 Command Response (C/R) bit.26 7.3.3 SAPI field.27 7.3.4 New Link Flag (NLF) bit.27 7.3.5 LLN-field.27 7.3.6 Data Link Identifiers (DLI).27 7.4 Control field formats.28 7.5 Control field parameters.28 7.5.1 Poll/Final (P/F) bit.28 7.5.2 Multiple frame operation variables and sequence numbers.29 7.5.2.1 Modulus.29 7.5.2.2 Send state Variable V(S).29 7.5.2.3 Acknowledge state Variable V(A).29 7.5.2.4 Send sequence Number N(S).29 SIST EN 300 175-4 V1.6.1:2003

ETSI ETSI EN 300 175-4 V1.6.1 (2002-02) 4 7.5.2.5 Receive state Variable V(R).29 7.5.2.6 Receive sequence Number N(R).29 7.5.3 Unacknowledged operation variables and sequence numbers.29 7.5.4 Supervisory and Unnumbered function bits S and U.30 7.6 Length indicator field format.30 7.7 Length indicator field parameters.30 7.7.1 Length indicator field extension bit; N.30 7.7.2 More data bit; M.30 7.7.3 Length parameter; LI.31 7.7.4 Extended length parameter; LJJ.31 7.7.5 Reserved bit; RES.31 7.8 Fill field format.31 7.9 Checksum field format.32 7.10 Checksum field parameters.32 7.11 Commands and responses.33 7.11.1 Information (I) command.33 7.11.2 Receive Ready (RR) command/response.34 7.11.3 Receive Not Ready (RNR) command/response.34 7.11.4 REJect (REJ) command/response.34 7.11.5 Set Asynchronous Balanced Mode (SABM) command.34 7.11.6 Disconnect Mode (DM) response.35 7.11.7 Unnumbered Information (UI) command.35 7.11.8 DISConnect (DISC) command.35 7.11.9 Unnumbered ACK (UA) response.35 8 Primitives.35 8.1 Primitive types.35 8.2 Primitives to the MAC layer (lower layer).36 8.3 Primitives to the NWK layer (higher layer).36 8.3.1 Parameter definitions.36 8.3.2 S-SAP primitives.37 8.3.2.1 DL_ESTABLISH primitive.37 8.3.2.2 DL_RELEASE primitive.38 8.3.2.3 DL_DATA primitive.38 8.3.2.4 DL_UNIT_DATA primitive.38 8.3.2.5 DL_SUSPEND primitive.38 8.3.2.6 DL_RESUME primitive.39 8.3.2.7 DL_ENC_KEY primitive.39 8.3.2.8 DL_ENCRYPT primitive.39 8.3.2.9 DL_SERVICE_MOD primitive.39 8.3.3 B-SAP primitives.40 8.3.3.1 DL_BROADCAST primitive.40 8.3.3.2 DL_EXPEDITED primitive.40 8.4 Primitives to the interworking unit.40 8.4.1 Parameter definitions.40 8.4.2 LUX-SAP primitives.41 8.4.2.1 DL_U_DATA primitive.41 8.4.2.2 DL_U_UNIT_DATA primitive.41 8.4.2.3 DL_U_ERROR primitive.41 9 C-plane peer-to-peer procedures.42 9.1 General.42 9.2 Point to point acknowledged operation.42 9.2.1 Procedure for the use of the P/F bit.42 9.2.1.1 Class A acknowledged information transfer.42 9.2.1.2 Class B acknowledged information transfer.43 9.2.2 Use of LLN.43 9.2.2.1 Class A operation.43 9.2.2.2 Class B operation.43 9.2.3 Link establishment and information transfer in class A operation.43 9.2.3.1 Establishing class A operation.43 9.2.3.2 Class A acknowledged information transfer.44 SIST EN 300 175-4 V1.6.1:2003

ETSI ETSI EN 300 175-4 V1.6.1 (2002-02) 5 9.2.3.3 Transmission of class A I-frames.44 9.2.3.4 Reception of class A I-frames.45 9.2.3.5 Receiving acknowledgements.45 9.2.3.6 Waiting for acknowledgement.45 9.2.3.7 Release of class A operation.46 9.2.3.8 Re-establishment of class A operation.46 9.2.4 Establishing class B multiple frame operation.46 9.2.4.1 Overview.46 9.2.4.2 Class B multiple frame establishment procedures.47 9.2.4.3 Class B LLN assignment procedures.48 9.2.4.3.1 PT establishment.48 9.2.4.3.2 FT establishment.49 9.2.5 Link maintenance and information transfer in class B multiple frame operation.49 9.2.5.1 Transmitting I-frames.49 9.2.5.2 Receiving I-frames.50 9.2.5.2.1 P bit set to 1.50 9.2.5.2.2 P bit set to 0.50 9.2.5.3 Sending and receiving acknowledgements.50 9.2.5.3.1 Sending acknowledgements.50 9.2.5.3.2 Receiving acknowledgements.50 9.2.5.4 Receiving REJ-frames.51 9.2.5.5 Receiving RNR-frames.52 9.2.5.6 LAPC own receiver busy condition.53 9.2.5.7 Waiting acknowledgement.53 9.2.5.8 Appropriate supervisory frame.54 9.2.6 Release of class B multiple frame operation.54 9.2.7 Link suspension and resumption.55 9.2.7.1 Link suspension.55 9.2.7.1.1 Class B acknowledged suspend.55 9.2.7.1.2 Unacknowledged suspend.56 9.2.7.1.2.1 Class A.56 9.2.7.1.2.2 Class B.56 9.2.7.1.2.3 Class U.56 9.2.7.2 Class B link resumption.56 9.2.7.3 Connection handover.57 9.2.7.3.1 Class A connection handover.59 9.2.7.3.2 Class B connection handover.59 9.2.7.3.3 Expiry of connection handover timer.60 9.2.8 Re-establishment of class B multi-frame operation.60 9.2.8.1 Criteria for re-establishment.60 9.2.8.2 Procedure.61 9.2.9 Exception handling.61 9.2.9.1 General.61 9.2.9.2 Class B exception condition reporting and recovery.61 9.2.9.2.1 N(S) sequence error.62 9.2.9.2.2 N(R) sequence error.62 9.2.9.2.3 Timer recovery condition.62 9.2.9.2.4 Collision of identical transmitted and received commands.62 9.3 Unacknowledged operation.62 9.3.1 Use of LLN for unacknowledged information transfer.62 9.3.2 Class U link establishment.63 9.3.3 Unacknowledged information transfer.63 9.3.3.1 Transmission of unacknowledged information.63 9.3.3.2 Reception of unacknowledged information.63 9.3.4 Unacknowledged release.63 9.4 Broadcast operation.63 9.4.1 Normal operation.63 9.4.1.1 Procedure in the Fixed radio Termination (FT).63 9.4.1.2 Procedure in the Portable radio Termination (PT).64 9.4.2 Expedited operation.64 9.4.2.1 Procedure in the Fixed radio Termination (FT).64 9.4.2.2 Procedure in the Portable radio Termination (PT).64 SIST EN 300 175-4 V1.6.1:2003

ETSI ETSI EN 300 175-4 V1.6.1 (2002-02) 6 9.5 MAC layer interfaces.64 9.5.1 MC-SAP.64 9.5.1.1 C-plane overview.64 9.5.1.2 C-plane service data procedures.65 9.5.1.3 U-plane service data.65 9.5.2 MB-SAP.66 9.5.2.1 C-plane service data procedures.66 9.5.2.2 U-plane service data.66 9.5.3 MA-SAP.66 9.5.3.1 Overview.66 9.5.3.2 Service data procedures.67 10 Management procedures.67 10.1 Lower Layer Management Entity (LLME).67 10.2 MAC connection management.67 10.2.1 MAC connection set-up.67 10.2.2 MAC connection release.68 10.2.3 MAC connection modification.68 10.2.4 MAC connection identifiers.69 10.2.4.1 Overview.69 10.2.4.2 Advanced MAC Connection Identifiers (AMCI).69 10.2.4.3 Basic MAC Connection Identifiers (BMCI).70 10.2.4.4 MAC Connection Endpoint Identifier (MCEI).70 10.2.5 Selection of logical channel (CS or CF).70 10.3 DLC C-plane (LAPC) management.70 10.3.1 Provision of link signature.71 10.3.2 Routing of connection oriented links.71 10.3.3 Routing of connectionless links.71 10.4 DLC U-plane (LUX) management.71 10.4.1 U-plane establishment.71 10.4.2 U-plane release.72 10.4.3 U-plane suspend and resume.72 10.5 Connection handover management.72 10.6 Ciphering management.73 10.6.1 Ciphering management in cases where the NWK layer executes the ciphering related MM procedure.73 10.6.1.1 Providing a key to the MAC layer.73 10.6.1.2 Starting and stopping the ciphering.73 10.6.1.3 Connection handover.73 10.6.2 Ciphering management in cases where the NWK layer does not execute the ciphering related MM procedure.73 11 U-plane service characteristics.74 11.1 General.74 11.2 LU1 TRansparent UnProtected service (TRUP).74 11.3 LU2 Frame RELay service (FREL).75 11.3.1 General.75 11.3.2 Checksum operation.76 11.3.3 Segmentation and transmission class.76 11.3.4 Data transmission.77 11.3.4.1 Send side procedure.77 11.3.4.2 Receive side procedure.77 11.4 LU3 Frame SWItching service (FSWI).77 11.5 LU4 Forward Error Correction service (FEC).78 11.6 LU5 Basic Rate Adaption service (BRAT).78 11.6.1 Overview.78 11.6.2 Protected service operation.79 11.6.2.1 General.79 11.6.2.2 Data buffering and initial rate adaptation.80 11.6.2.3 Multi-channel set multiplexing.81 11.6.2.4 Segmentation of Multiplexed Data Units (MDU).82 11.6.2.5 Frame sequencing and addition of control and fill octets.83 11.6.2.6 Frame transmission.84 SIST EN 300 175-4 V1.6.1:2003

ETSI ETSI EN 300 175-4 V1.6.1 (2002-02) 7 11.6.3 Unprotected service operation.84 11.6.3.1 General.84 11.6.3.2 Data buffering and initial rate adaption.85 11.6.3.3 Multi-channel set multiplexing.85 11.6.3.4 Segmentation of MDUs.86 11.6.3.5 Frame transmission.86 11.7 LU6 Secondary Rate AdapTion (SRAT) service.87 11.7.1 General.87 11.8 LU16 ESCape Service (ESC).88 11.8.1 General.88 11.9 LU7 64 kbit/s data bearer service.88 11.9.1 General.88 11.9.2 Physical layer service.88 11.9.3 MAC layer service.89 11.9.4 DLC layer service.89 11.9.4.1 Architectural model.89 11.9.4.1.1 Transmit (Tx) frame buffering.89 11.9.4.1.2 Receive (Rx) frame buffering.89 11.9.4.2 Automatic-Repeat-Request (ARQ) and Forward Error Control (FEC).89 11.9.4.2.1 Control field.91 11.9.4.2.1.1 Format control parameter coding.91 11.9.4.2.1.2 Offset variable V(O).92 11.9.4.2.1.3 Time variables Vn(T).92 11.9.4.2.1.4 Offset number N(O).92 11.9.4.2.1.5 Send state variable V(S).92 11.9.4.2.1.6 Acknowledge state variable V(A).93 11.9.4.2.1.7 Send sequence number N(S).93 11.9.4.2.1.8 Receive state variable V(R).93 11.9.4.2.1.9 Receive sequence number N(R).93 11.9.4.2.2 Information field.93 11.9.4.2.3 ARQ checksum.93 11.9.4.3 Procedures for normal operation.94 11.9.4.3.1 Establishment and synchronization procedures.94 11.9.4.3.2 Active phase.96 11.9.4.3.2.1 Transmitting frames (first time transmission).96 11.9.4.3.2.2 Re-transmitting frames.96 11.9.4.3.2.3 Receiving frames.96 11.9.4.3.2.4 Sending acknowledgements.97 11.9.4.3.2.5 Receiving acknowledgements.97 11.9.4.3.3 Release.97 11.9.4.4 Exceptional procedures.97 11.9.4.4.1 Invalid frame condition.97 11.9.4.4.2 Establishment.98 11.9.4.4.3 Transmitting frames.98 11.9.4.4.4 Receiving frames.98 11.9.4.4.5 Sending acknowledgements.98 11.9.4.4.6 Forwarding of received data.98 11.9
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