Access Network xDSL Transmission Filters; Part 1: ADSL Splitters for European Deployment; Sub-Part 5: Specification of ADSL over POTS distributed filters (V1.1.1)
"The present document specifies requirements and test methods for ""ADSL over POTS"" distributed filters. These filters at the user side of the local loop in the customer premise. NOTE: It is also recognized that distributed filters may be used in deployments where higher frequency services are present@ such as home networking signals or VDSL. Notes in the text of the present document refer to the appropriate modification of the electrical requirements necessary to accommodate these high frequency services."