Amendment 2 to Recommendation ITU-T G.8273.2/Y.1368.2 (2014) introduces the following changes:– adds Recommendation ITU-T G.703 as a normative reference in clause 2– adds TDEV requirements in clauses 7.1.2 and C.2.1.2–adds note in clauses 7.3.1 and C.2.3.1– replaces clause 7.4.2 and subclauses 7.4.2.1 and 7.4.2.2– replaces Annex B–replaces clause C.2.4.2 and subclauses C.2.4.2.1 and C.2.4.2.2–adds clause C.2.6– replaces Appendix II–removes Appendices IV and V.