Annex J and G.Fast with specialized SFP

Junos OS support G.Fast and Annex J specification with SFP xDSL for ADSL2/ADSL2+ and all VDSL2 profiles on devices. Annex J is a specification in ITU-T recommendations G.992.3 and G.992.5 for all digital mode ADSL with improved spectral compatibility with ADSL over ISDN. You can configure Annex J by using the dsl-sfp-options cli command.