Recommendation ITU-T G.8260 provides the definitions, terminology and abbreviations used in ITU‑T Recommendations on timing and synchronization in packet networks. Amendment 1 to ITU-T G.8260 (11/2022) provides the following updates: - Updated definitions with consideration given to the use of this terminology in metrology - New Appendix II “Time scales” added - New Appendix III “Clarifications on the term traceability” added - New references added to Bibliography - Revised terminology based on inclusive language