CONTENTS

1 Scope
2 References
3 Abbreviations
4 Definitions
4.1 General definitions
4.2 Definitions related to clock equipments
4.3 Definitions related to synchronization networks
4.4 Definitions related to clock modes of operation (applicable to slave clocks)
4.5 Definitions related to clock characterization
4.6 SDH specific definitions
5 Description of phase variation components
6 Impairments caused by phase variation
6.1 Types of impairments
6.1.1 Errors
6.1.2 Degradation of digitally encoded analogue information
6.1.3 Slips
6.2 Control of impairments
6.2.1 Errors
6.2.2 Degradation of digitally encoded analogue signals
6.2.3 Slips
7 Purpose of phase variation specifications
7.1 Jitter
7.2 Wander
8 Structure of synchronization networks
8.1 Synchronization modes
8.2 Synchronization networks
9 Measurement configurations
9.1 Synchronized clock measurement configuration
9.2 Independent clock measurement configuration
Appendix I Mathematical models of timing signals
I.1 Total instantaneous phase model of an ideal timing signal
I.2 Total instantaneous phase model of actual timing signals
I.3 Time error model
Appendix II Definitions and properties of frequency and time stability quantities
II.1 Allan deviation (ADEV)
II.2 Modified Allan deviation (MDEV)
II.3 Time deviation (TDEV)
II.4 Root mean square Time Interval Error (TIErms)
II.5 Maximum Time Interval Error (MTIE)