EN 300 417-6-1 : 1.1.3
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TRANSMISSION AND MULTIPLEXING (TM) - GENERIC REQUIREMENTS OF TRANSPORT FUNCTIONALITY OF EQUIPMENT - PART 6-1: SYNCHRONIZATION LAYER FUNCTIONS
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Foreword
1 Scope
2 References
3 Definitions, abbreviations and symbols
3.1 Definitions
3.2 Abbreviations
3.3 Symbols and diagrammatic conventions
3.4 Introduction
4 Synchronization principles
4.1 Network synchronization
4.2 Synchronization distribution trails
4.3 Synchronization interface
4.4 Clock-Source Quality-Level
4.5 SSM and TM channels
4.6 Selection process
4.7 Signal fail
4.8 Hold-off time
4.9 WTR time
4.10 Synchronization source priorities
4.11 External commands (EXTCMD)
4.12 Automatic reference selection process
4.13 Timing loop prevention
4.14 Delay times for NEs with SEC
4.15 Delay times for NEs with SSU or for SASE
4.16 Synchronization layer functions
4.17 Overview of the processes performed within
the atomic functions
5 Synchronization distribution layer atomic functions
5.1 SD Connection function (SD_C)
5.2 SD Trail Termination (TT) functions
5.3 SD adaptation functions
6 NS layer atomic functions
6.1 NS_connection functions (NS_C)
7 TL to SD layer atomic function
7.1 STM-1 multiplex section adaptation functions
7.2 STM-4 multiplex section adaptation functions
7.3 STM-16 multiplex section adaptation functions
7.4 P31s adaptation functions
7.5 P4s adaptation functions
7.6 P12s layer adaptation functions
7.7 T12 layer adaptation functions
8 Equipment clock to TLs clock adaptation functions
8.1 STM-N layer
8.2 VC layers
8.3 Pxx layers
8.4 T12 layer
Annex A (normative): Synchronization selection process
Annex B (informative): TL models for synchronization
information
Annex C (informative): Examples of synchronization
functionality in the NE
Annex D (informative): Delay time allocation
D.1 Delay and processing times for the synchronization
selection process
D.2 Non switching message delay T NSM
D.3 Switching message delay T SM
D.4 Holdover message delay T HM
D.5 Wait to restore time T WTR
Annex E (informative): Overview of inputs/outputs to
the atomic functions
Bibliography
History
Functional requirements for synchronisation layers in equipment based on the generic principles described in part 1-1.
| Committee |
TM 1
|
| DocumentType |
Standard
|
| Pages |
113
|
| PublisherName |
European Telecommunications Standards Institute
|
| Status |
Current
|
| Standards | Relationship |
| NEN EN 300417-6-1 : 1999 | Similar to |
| DIN EN 300417-6-1:2000-06 | Identical |
| PN EN 300 417-6-1 : AUG 2005 | Identical |
| NBN EN 300 417 6-1 : V1.1.2 | Identical |
| NF EN 301165 : 2002 | TRANSMISSION AND MULTIPLEXING (TM) - SYNCHRONOUS DIGITAL HIERARCHY (SDH) - SDH LEASED LINES - NETWORK AND TERMINAL INTERFACE PRESENTATION |
| NF EN 300462 2-1 : 2002 | TRANSMISSION AND MULTIPLEXING (TM) - GENERIC REQUIREMENTS FOR SYNCHRONIZATION NETWORKS - PART 2-1: SYNCHRONIZATION NETWORK ARCHITECTURE BASED ON NETWORKS |
| EG 201 793 : 1.1.1 | TRANSMISSION AND MULTIPLEXING (TM); SYNCHRONIZATION NETWORK ENGINEERING |
| TR 101 689-1 : 1.1.1 | TRANSMISSION AND MULTIPLEXING (TM) - TERMS AND DEFINITIONS IN TRANSPORT NETWORKS - PART 1: CORE NETWORKS |
| ES 201 803-4 : 1.1.1 | DYNAMIC SYNCHRONOUS TRANSFER MODE (DTM); PART 4: MAPPING OF DTM FRAMES INTO SDH CONTAINERS |
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