G.781 –Synchronization layer functions
G.783 –Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks
G.810 –Definition and Terminology of Synchronous Networks
G.811 –Timing Characteristics of Primary Reference Clocks
G.812 –Timing requirements of slave clocks suitable for use as node clocks in synchronization networks
G.813 –Timing characteristics of SDH equipment slave clocks (SEC)
G.822 –Controlled Slip Rate Objectives on an international digital connection
G.823 –The control of jitter and wander within digital networks which are based on the 2048 kbit/s hierarchy
G.824 –The control of jitter and wander within digital networks which are based on the 1544 kbit/s hierarchy
G.825 –The control of jitter and wander within digital networks which are based on the synchronous digital hierarchy (SDH)