SIST EN 300 175-4 V1.4.2:2003

• Abstract:

  To update ETS 300 175 Edition 2 based upon change requests received.

• 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 V1.4.2 (1999-06) - Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 4: Data Link Control (DLC) Layer

Overview

SIST EN 300 175-4 V1.4.2:2003 is an internationally recognized standard published by the Slovenski inštitut za standardizacijo (SIST). This document, aligned with EN 300 175-4 Version 1.4.2 from ETSI, specifies the Data Link Control (DLC) Layer for the Common Interface (CI) used in Digital Enhanced Cordless Telecommunications (DECT) systems. The scope focuses on updating and harmonizing DLC layer requirements based on new change requests, promoting robust and interoperable data link services within DECT networks.

This standard ensures reliable data transmission, interworking, and management procedures at the data link layer, which is critical for maintaining seamless wireless communications in DECT-enabled systems.

Key Topics

• Data Link Control (DLC) Layer Structure
  Defines the architecture, frame structures, and operational procedures for the data link layer in DECT systems.

• C-Plane and U-Plane Services

  • C-plane: Handles control messages, connection management, and signaling.
  • U-plane: Manages user data transfer and related mechanisms.

• Layer Management and Interfaces

  • Procedures for establishing, releasing, and modifying logical links.
  • Integration with lower (MAC) and higher (NWK) layers via defined Service Access Points (SAPs).

• Frame Formats and Control Fields

  • Specification of frame structures, sequencing, error control, and addressing.
  • Mechanisms for reliable and unacknowledged data transfer.

• Primitives and Service Characteristics

  • Set of primitives for communication between DLC and adjacent layers.
  • Detailed service options, such as frame relay, transparent unprotected services, error correction, and rate adaptation.

• Network Management

  • Management of logical channels, connection handover, ciphering, and exception handling.

Applications

The DECT Common Interface Data Link Control Layer specified in SIST EN 300 175-4 V1.4.2:2003 serves a wide range of applications across telecommunications environments:

• Cordless Telephony Systems
  Ensures robust, interoperable wireless communication between base stations and portable handsets using the DECT standard.

• Data and Voice Transmission
  Supports both voice and data transport with mechanisms for frame relay, error correction, and service differentiation.

• Business Communication Systems
  Used in PBXs, enterprise cordless systems, and wireless office solutions where reliable link control and service management are essential.

• Residential and Small Business Use
  Facilitates wireless connectivity and mobility in residential DECT phones and small business setups.

• Integrated Communication Networks
  Promotes interoperability with other standards-compliant DECT components, supporting scalable deployment and efficient management.

Related Standards

Understanding SIST EN 300 175-4 and implementing compliant systems is enhanced when considering its relationship to the broader DECT standard family and other international specifications:

• SIST EN 300 175 Series

  • Part 1: Overview
  • Part 2: Physical Layer
  • Part 3: Medium Access Control (MAC) Layer
  • Part 5 and onwards: Network Layer and supplementary services

• ETSI EN 300 175 Series
  The foundational series for DECT Common Interface standards used Europe-wide and internationally.

• ISO/IEC 35.100.20
  Relates to data link layer protocols, ensuring compatibility with broader data communications standards.

• SIST EN 300 444
  Covers radio aspects of DECT, complementing data link requirements for end-to-end system conformity.

By adhering to SIST EN 300 175-4 V1.4.2:2003, organizations benefit from improved interoperability, enhanced reliability, and future-proof communication platforms in DECT-based environments.

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 1.4.2SIST EN 300 175-4 V1.4.2:2003en01-december-2003SIST EN 300 175-4 V1.4.2:2003SLOVENSKI
STANDARD
EN 300 175-4 V1.4.2 (1999-06)European Standard (Telecommunications series)Digital Enhanced Cordless Telecommunications (DECT);Common Interface (CI);Part 4: Data Link Control (DLC) layerSIST EN 300 175-4 V1.4.2:2003

ETSIETSI EN 300 175-4 V1.4.2 (1999-06)2ReferenceREN/DECT-000129-4 (1md00jdc.PDF)KeywordsDECT, radioETSIPostal addressF-06921 Sophia Antipolis Cedex - FRANCEOffice address650 Route des Lucioles - Sophia AntipolisValbonne - FRANCETel.: [phone]
Fax: [phone]Siret N° 348 623 562 00017 - NAF 742 CAssociation à but non lucratif enregistrée à laSous-Préfecture de Grasse (06) N° 7803/[e-mail] copies of this ETSI deliverablecan be downloaded fromhttp://www.etsi.orgIf you find errors in the present document, send yourcomment to: [e-mail] NotificationNo part may be reproduced except as authorized by written permission.The copyright and the foregoing restriction extend to reproduction in all media.© European Telecommunications Standards Institute 1999.All rights reserved.SIST EN 300 175-4 V1.4.2:2003

ETSIETSI EN 300 175-4 V1.4.2 (1999-06)3ContentsIntellectual Property Rights.11Foreword.111Scope.122References.123Definitions and abbreviations.133.1Definitions.133.2Abbreviations.144Data Link Control (DLC) layer overview.164.1General.164.2C-Plane services.164.3U-plane services.174.4Lower Layer Management Entity (LLME).195C-plane service characteristics.195.1Data link service (LAPC+Lc).195.1.1General.195.1.2LAPC types of operation.205.1.3Establishment of information transfer modes.205.1.3.1Data Link Identifier (DLI).205.1.3.2LAPC states.205.2Broadcast service (Lb).216Frame structures for C-plane services.226.1Data link service frame structure.226.1.1General frame structure.226.1.2Lc frame delimiting and transparency.236.1.3Transmission order.236.1.4Routing to logical channels.236.1.4.1CF logical channel.246.1.4.2CS logical channel.246.1.5Invalid frames.256.2Broadcast service frame structure.256.2.1Standard frame structure.256.2.2Extended frame structure.267Elements of procedures and formats of fields for C-plane peer-to-peer communication.267.1General.267.2Address field formats.267.3Address field parameters.277.3.1REServed bit (RES).277.3.2Command Response (C/R) bit.277.3.3SAPI field.277.3.4New Link Flag (NLF) bit.277.3.5LLN-field.277.3.6Data Link Identifiers (DLI).287.4Control field formats.287.5Control field parameters.287.5.1Poll/Final (P/F) bit.287.5.2Multiple frame operation variables and sequence numbers.297.5.2.1Modulus.297.5.2.2Send state Variable V(S).297.5.2.3Acknowledge state Variable V(A).297.5.2.4Send sequence Number N(S).297.5.2.5Receive state Variable V(R).297.5.2.6Receive sequence Number N(R).30SIST EN 300 175-4 V1.4.2:2003

ETSIETSI EN 300 175-4 V1.4.2 (1999-06)47.5.3Unacknowledged operation variables and sequence numbers.307.5.4Supervisory and Unnumbered function bits S and U.307.6Length indicator field format.307.7Length indicator field parameters.307.7.1Length indicator field extension bit; N.307.7.2More data bit; M.307.7.3Length parameter; LI.317.7.4Extended length parameter; LJJ.317.7.5Reserved bit; RES.327.8Fill field format.327.9Checksum field format.327.10Checksum field parameters.327.11Commands and responses.337.11.1Information (I) command.347.11.2Receive Ready (RR) command/response.347.11.3Receive Not Ready (RNR) command/response.347.11.4REJect (REJ) command/response.347.11.5Set Asynchronous Balanced Mode (SABM) command.347.11.6Disconnect Mode (DM) response.357.11.7Unnumbered Information (UI) command.357.11.8DISConnect (DISC) command.357.11.9Unnumbered ACK (UA) response.358Primitives.368.1Primitive types.368.2Primitives to the MAC layer (lower layer).368.3Primitives to the NWK layer (higher layer).368.3.1Parameter definitions.368.3.2 S-SAP primitives.378.3.2.1DL_ESTABLISH primitive.388.3.2.2DL_RELEASE primitive.388.3.2.3DL_DATA primitive.388.3.2.4DL_UNIT_DATA primitive.388.3.2.5DL_SUSPEND primitive.398.3.2.6DL_RESUME primitive.398.3.2.7DL_ENC_KEY primitive.398.3.2.8DL_ENCRYPT primitive.398.3.2.9DL_SERVICE_MOD primitive.408.3.3B-SAP primitives.408.3.3.1DL_BROADCAST primitive.408.3.3.2DL_EXPEDITED primitive.408.4Primitives to the interworking unit.408.4.1Parameter definitions.418.4.2LUX-SAP primitives.418.4.2.1DL_U_DATA primitive.418.4.2.2DL_U_UNIT_DATA primitive.418.4.2.3DL_U_ERROR primitive.429C-plane peer-to-peer procedures.429.1General.429.2Point to point acknowledged operation.439.2.1Procedure for the use of the P/F bit.439.2.1.1Class A acknowledged information transfer.439.2.1.2Class B acknowledged information transfer.439.2.2Use of LLN.439.2.2.1Class A operation.439.2.2.2Class B operation.439.2.3Link establishment and information transfer in class A operation.439.2.3.1Establishing class A operation.439.2.3.2Class A acknowledged information transfer.449.2.3.3Transmission of class A I-frames.44SIST EN 300 175-4 V1.4.2:2003

ETSIETSI EN 300 175-4 V1.4.2 (1999-06)59.2.3.4Reception of class A I-frames.459.2.3.5Receiving acknowledgements.459.2.3.6Waiting for acknowledgement.459.2.3.7Release of class A operation.469.2.3.8Re-establishment of class A operation.469.2.4Establishing class B multiple frame operation.469.2.4.1Overview.469.2.4.2Class B multiple frame establishment procedures.479.2.4.3Class B LLN assignment procedures.489.2.4.3.1PT establishment.489.2.4.3.2FT establishment.499.2.5Link maintenance and information transfer in class B multiple frame operation.499.2.5.1Transmitting I-frames.499.2.5.2Receiving I-frames.509.2.5.2.1P bit set to 1.509.2.5.2.2P bit set to 0.509.2.5.3Sending and receiving acknowledgements.509.2.5.3.1Sending acknowledgements.509.2.5.3.2Receiving acknowledgements.509.2.5.4Receiving REJ-frames.519.2.5.5Receiving RNR-frames.529.2.5.6LAPC own receiver busy condition.539.2.5.7Waiting acknowledgement.539.2.5.8Appropriate supervisory frame.549.2.6Release of class B multiple frame operation.549.2.7Link suspension and resumption.559.2.7.1Link suspension.559.2.7.1.1Class B acknowledged suspend.559.2.7.1.2Unacknowledged suspend.569.2.7.2Class B link resumption.569.2.7.3Connection handover.579.2.7.3.1Class A connection handover.599.2.7.3.2Class B connection handover.599.2.7.3.3Expiry of connection handover timer.609.2.8Re-establishment of class B multiframe operation.609.2.8.1Criteria for re-establishment.609.2.8.2Procedure.609.2.9Exception handling.619.2.9.1General.619.2.9.2Class B exception condition reporting and recovery.619.2.9.2.1N(S) sequence error.619.2.9.2.2N(R) sequence error.629.2.9.2.3Timer recovery condition.629.2.9.2.4Collision of identical transmitted and received commands.629.3Unacknowledged operation.629.3.1Use of LLN for unacknowledged information transfer.629.3.2Class U link establishment.629.3.3Unacknowledged information transfer.639.3.3.1Transmission of unacknowledged information.639.3.3.2Reception of unacknowledged information.639.3.4Unacknowledged release.639.4Broadcast operation.639.4.1Normal operation.639.4.1.1Procedure in the Fixed radio Termination (FT).639.4.1.2Procedure in the Portable radio Termination (PT).639.4.2Expedited operation.649.4.2.1Procedure in the Fixed radio Termination (FT).649.4.2.2Procedure in the Portable radio Termination (PT).649.5MAC layer interfaces.649.5.1MC-SAP.64SIST EN 300 175-4 V1.4.2:2003

ETSIETSI EN 300 175-4 V1.4.2 (1999-06)69.5.1.1C-plane overview.649.5.1.2C-plane service data procedures.659.5.1.3U-plane service data.659.5.2MB-SAP.659.5.2.1C-plane overview.659.5.2.2C-plane service data procedures.669.5.2.3U-plane service data.669.5.3MA-SAP.669.5.3.1Overview.669.5.3.2Service data procedures.6610Management procedures.6710.1Lower Layer Management Entity (LLME).6710.2MAC connection management.6710.2.1MAC connection set-up.6710.2.2MAC connection release.6810.2.3MAC connection modification.6810.2.4MAC connection identifiers.6810.2.4.1Overview.6810.2.4.2Advanced MAC Connection Identifiers (AMCI).6910.2.4.3Basic MAC Connection Identifiers (BMCI).6910.2.4.4MAC Connection Endpoint Identifier (MCEI).7010.2.5Selection of logical channel (CS or CF).7010.3DLC C-plane (LAPC) management.7010.3.1Provision of link signature.7010.3.2Routing of connection oriented links.7110.3.3Routing of connectionless links.7110.4DLC U-plane (LUX) management.7110.4.1U-plane establishment.7110.4.2U-plane release.7210.4.3U-plane suspend and resume.7210.5Connection handover management.7210.6Ciphering management.7310.6.1Ciphering management in cases where the NWK layer executes the ciphering related MM procedure.7310.6.1.1Providing a key to the MAC layer.7310.6.1.2Starting and stopping the ciphering.7310.6.1.3Connection handover.7310.6.2Ciphering management in cases where the NWK layer does not execute the ciphering related MMprocedure.7311U-plane service characteristics.7411.1General.7411.2LU1 TRansparent UnProtected service (TRUP).7411.3LU2 Frame RELay service (FREL).7511.3.1General.7511.3.2Checksum operation.7611.3.3Segmentation and transmission class.7611.3.4Data transmission.7711.3.4.1Send side procedure.7711.3.4.2Receive side procedure.7711.4LU3 Frame SWItching service (FSWI).7711.5LU4 Forward Error Correction service (FEC).7811.6LU5 Basic Rate Adaption service (BRAT).7811.6.1Overview.7811.6.2Protected service operation.7911.6.2.1General.7911.6.2.2Data buffering and initial rate adaption.8011.6.2.3Multi-channel set multiplexing.8111.6.2.4Segmentation of Multiplexed Data Units (MDU).8211.6.2.5Frame sequencing and addition of control and fill octets.8211.6.2.6Frame transmission.83SIST EN 300 175-4 V1.4.2:2003

ETSIETSI EN 300 175-4 V1.4.2 (1999-06)711.6.3Unprotected service operation.8411.6.3.1General.8411.6.3.2Data buffering and initial rate adaption.8511.6.3.3Multi-channel set multiplexing.8511.6.3.4Segmentation of MDUs.8611.6.3.5Frame transmission.8611.7LU6 Secondary Rate AdapTion (SRAT) service.8611.7.1General.8611.8LU16 ESCape Service (ESC).8811.8.1General.8811.9LU7 64 kbit/s data bearer service.8811.9.1General.8811.9.2Physical layer service.8811.9.3MAC layer service.8811.9.4DLC layer service.8811.9.4.1Architectural model.8811.9.4.1.1Transmit (Tx) frame buffering.8911.9.4.1.2Receive (Rx) frame buffering.8911.9.4.2Automatic-Repeat-Request (ARQ) and Forward Error Control (FEC).8911.9.4.2.1Control field.9111.9.4.2.1.1Format control parameter coding.9111.9.4.2.1.2Offset variable V(O).9111.9.4.2.1.3Time variables Vn(T).9111.9.4.2.1.4Offset number N(O).9211.9.4.2.1.5Send state variable V(S).9211.9.4.2.1.6Acknowledge state variable V(A).9211.9.4.2.1.7Send sequence number N(S).9211.9.4.2.1.8Receive state variable V(R).9211.9.4.2.1.9Receive sequence number N(R).9211.9.4.2.2Information field.9311.9.4.2.3ARQ checksum.9311.9.4.3Procedures for normal operation.9311.9.4.3.1Establishment and synchronization procedures.9311.9.4.3.2Active phase.9511.9.4.3.2.1Transmitting frames (first time transmission).9511.9.4.3.2.2Re-transmitting frames.9511.9.4.3.2.3Receiving frames.9611.9.4.3.2.4Sending acknowledgements.9611.9.4.3.2.5Receiving acknowledgements.9711.9.4.3.3Release.9711.9.4.4Exceptional procedures.9711.9.4.4.1Invalid frame condition.9711.9.4.4.2Establishment.9711.9.4.4.3Transmitting frames.9711.9.4.4.4Receiving frames.9711.9.4.4.5Sending acknowledgements.9711.9.4.4.6Forwarding of received data.9711.9.4.4.7N(R) sequence error.9811.9.4.4.8N(O) sequence error.9811.9.4.4.9N(S) sequence error.9811.9.4.4.10Format error.9811.9.4.4.11Abnormal release.9911.9.4.4.12Implicit reset.9911.9.5Network layer service.9911.9.5.1LCE service.9911.9.5.2CC service.9911.10LU8 service.
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