G.992 whichis one of ADSL standard (G.dmt/G.Lite), among the incidental standards which add the stipulation which considers the communication circumstance of each area of the world, for European ones. In addition, forNorth American AnnexA and for indian AnnexC are prepared.In orderto be able to coexist European systemandADSL of ISDN, it is designed, but reallythe enterprise which utilizes Annex A it is many.