Rec. ITU-T G.8262/Y.1362 (07/2010) iii
CONTENTS
Page
1 Scope ............................................................................................................................ 1
2 References..................................................................................................................... 1
3 Definitions .................................................................................................................... 2
4 Abbreviations and acronyms ........................................................................................ 2
5 Conventions .................................................................................................................. 3
6 Frequency accuracy ...................................................................................................... 3
6.1 EEC-Option 1 ................................................................................................. 3
6.2 EEC-Option 2 ................................................................................................. 3
7 Pull-in, hold-in, and pull-out ranges ............................................................................. 3
7.1 Pull-in range ................................................................................................... 3
7.2 Hold-in range .................................................................................................. 4
7.3 Pull-out range ................................................................................................. 4
8 Noise generation ........................................................................................................... 4
8.1 Wander in locked mode .................................................................................. 4
8.2 Non-locked wander ........................................................................................ 7
8.3 Jitter ................................................................................................................ 7
9 Noise tolerance ............................................................................................................. 8
9.1 Wander tolerance ............................................................................................ 9
9.2 Jitter tolerance ................................................................................................ 11
10 Noise transfer ................................................................................................................ 13
10.1 EEC-Option 1 ................................................................................................. 14
10.2 EEC-Option 2 ................................................................................................. 14
11 Transient response and holdover performance ............................................................. 15
11.1 Short-term phase transient response ............................................................... 15
11.2 Long-term phase transient response (Holdover) ............................................ 16
11.3 Phase response to input signal interruptions .................................................. 18
11.4 Phase discontinuity ......................................................................................... 18
12 Interfaces....................................................................................................................... 19
12.1 External synchronization interfaces ............................................................... 19
Appendix I – Hybrid network elements (NEs) using STM-N and Ethernet (ETY)
interfaces ....................................................................................................................... 21
Appendix II – Relationship between requirements contained in this Recommendation and
other key synchronization-related Recommendations .................................................. 22
Appendix III – List of Ethernet interfaces applicable to synchronous Ethernet ...................... 23
