M00044357
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DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+) - DATA LINK (DL) LAYER; GENERAL ASPECTS
European Telecommunications Standards Institute
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Availability date: 11/06/2021
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Foreword
1. Scope
1.1 References
1.2 Abbreviations
2. Concepts and terminology
3. Overview description of LAPDm functions and procedures
3.1 General
3.2 Unacknowledged operation
3.3 Acknowledged operation
3.4 Information transfer mode
3.5 Release of data links
4. Service characteristics
4.1 General
4.2 Services provided to layer 3
4.3 Services required from the physical layer
4.4 Administrative services
5. Overview of a data link layer structure
5.1 Functional composition
5.2 Identification of data link end points
5.3 Data link procedure
5.4 Data link distribution procedure
5.5 Random access procedures
6. Specific requirements
6.1 Mode of operation and allowed SAPIs
6.2 Acknowledged mode of operation
Annex A (informative): Change Request History
History
Defines in general terms the Link Access Procedures on the Dm channel, LAPDm. The application of this protocol to other channel types is for further study.
Published | |
Document Type | Standard |
Status | Current |
Publisher | European Telecommunications Standards Institute |
Pages | |
ISBN | |
Committee | SMG 2 |