Intellectual Property Rights
Foreword
1 Scope
1.1 Purpose of the present
1.2 Relationship with other Documents
2 References
3 Definitions and abbreviations
3.1 Definitions
3 2 Abbreviations
4 The importance of and need for Synchronization
5 The need for Synchronization in specific Traffic Networks
5.1 General
5.2 PDH Network Needs
5.3 SDH Network Needs
5.4 Switching needs
5.5 GSM needs
6 Elements of a Synchronization Network
6.1 Introduction
6.2 PRC (Primary Reference Clock)
6.3 SSU
6.4 SETS (SDH Equipment Timing Source), SEC (SDH Equipment
Clock)
6.5 Regenerator Timing Generator (RTG)
7 Synchronization Distribution Architecture
7.1 Introduction
7.2 Master-Slave Synchronization
7.3 Intra-node Synchronization
7.4 Distributed PRC Architecture
7.5 Mixed PRC Architecture
7.6 Planning Rules
8 Restoration of Synchronization References
8.1 Types of Protection Mechanisms
8.2 Selection based on Priority Tables
8.3 Restoration based on Synchronization Status Messages
8.4 Applications of Synchronization Status Messages
9 Maintenance Strategies
10 2 Mbit/s retiming applications
10.1 Definition
10.2 Network applications for 2 Mbit/s retiming
11 Managing the Synchronization Network
11.1 Need for Managing the Sync Network
11.2 Requirements for a Synchronization Network Management
System
12 Synchronization Interworking between Operators
12.1 General
12.2 Independent Synchronization
12.3 Exchange of Synchronization Reference Signals
12.4 Performance Issues
Annex A (informative): Examples of Subnetworks employing SSM
controlled restoration
A.1 Introduction
A.2 Network example n 1
A.3 Network example n 2
A.4 Network example n 3
A.5 Network example n 4
A.6 Network example n 5
Annex B (informative): Interworking between SASE's and SDH NE's
B.1 Introduction
B.2 Network analysis
B.3 SDH sub-network Examples
Annex C (informative): Examples of Synchronization Network
Implementation
C.1 Dedicated Synchronization Network
C.2 Non-Dedicated Synchronization Network
C.3 Mixed Synchronization Network
History