Naming conventions:
Product_type_h/wRevision_s/wRevision_ValidArea_language_datecode.extension
Product_Howto_language_ Theme-with-description.extension 



DSL-502T_ds_revALL_100_ALL_en_050101.pdf	Datasheet.
						Englisches Datenblatt.

DSL-502T_howto_pl_Konfig-pod-ADSL-annex-A.pdf	Anleitung ADSL AnnexA polnisch
						Manual ADSL AnnexA polish