Amendment 2 to this Recommendation provides the following updates: -Details added on the use of [IEEE 1588-2019] -New profileVersion 1.2 and new profile Identifier added for [IEEE 1588-2019] -New appendix added “Considerations on selecting time out values” -New material added to clause 6.7.11 Packet timing signal fail. -New member “defaultDS.sdoId” added to Table A.1 defaultDS data set member specifications -New member “currentDS.meanDelay” added to Table A.2 currentDS data set member specifications -New member “portDS.minorVersionNumber” added to Table A.5 portDS data set member specifications -Parameters for “portDS.syncReceiptTimeout” and “portDS.delayRespReceiptTimeout” in Table A.5, which were “for further study”, were filled in.