An apparatus and a method are disclosed for unencumbering valuable switching resources in a network switch involved in a multipoint-to-multipoint switching scenario. The network switch includes an input processing port that is connected to a plurality of input links, and an output processing port that...http://www.google.de/patents/US5933429?utm_source=gb-gplus-sharePatent US5933429 - Multipoint-to-multipoint echo processing in a network switch
