Amendment 2 to Recommendation ITU-T G.993.2 (2011) covers the following functionalities: 1. Electrical length estimation method (corrigendum); 2. INPMIN-ROC (corrigendum); 3. Accuracy of test parameters (adding functionality); 4. INM facility (corrigendum); 5. O-SIGNATURE field for Upstream FDPS descriptor (new functionality); 6. SRA after SOS (corrigendum); 7. Annex B (Region B – Europe) (corrigendum and adding functionality); 8. Annex Y with optional "pilot sequence length multiple of 4" (corrigendum) and optional FDPS (new functionality).
ITU-T G.993.2 AMD 2-2012 history
2015ITU-T G.993.2-2015 Very high speed digital subscriber line transceivers 2 (VDSL2) (Study Group 15)
2013ITU-T G.993.2 AMD 3-2013 Very high speed digital subscriber line transceivers 2 (VDSL2) Amendment 3 (Study Group 15)
2012ITU-T G.993.2 AMD 2-2012 Very high speed digital subscriber line transceivers 2 (VDSL2) Amendment 2 (Study Group 15)
ITU-T G.993.2 AMD 2-2012 Very high speed digital subscriber line transceivers 2 (VDSL2) Amendment 2 (Study Group 15) was changed to ITU-T G.993.2 AMD 3-2013 Very high speed digital subscriber line transceivers 2 (VDSL2) Amendment 3 (Study Group 15).
ITU-T G.993.2 AMD 2-2012 Very high speed digital subscriber line transceivers 2 (VDSL2) Amendment 2 (Study Group 15) was changed to ITU-T G.993.2-2015 Very high speed digital subscriber line transceivers 2 (VDSL2) (Study Group 15).