... 50-60 HzADSL Modem SpecificationsADSL ANSI T1.413 Issue 2, ITU-T G.992.1 Annex A, B (G.dmt ... G.992.2 Annex A, B (G.lite), ITU-T G.994.1 (G.hs) Maximum Rate: 8 ... Mbps for downstream and 1 Mbps for upstream ADSL2 ITU-T G.992.3 Annex A, B, L, M ... (G.dmt.bis), ITU-T G.992.4 Annex A, B, L, M (G ... Mbps for downstream and 1.5 Mbps for upstream ADSL2+ ITU-T G.992.5 Annex A, B, M Maximum ...