This invention relates to LANs at a customers' premise, especially to the HomePNA technique. The idea of the invention is that voice band terminals and HomePNA (HPNA) stations are hidden from a distribution network by a band division filter in a way that performance of ADSL is not degraded by presence...http://www.google.com/patents/US6963559?utm_source=gb-gplus-sharePatent US6963559 - Arrangement of local area network
