A ring network, which can reduce the amount of processing, deal with the occurrence of faults, and lighten the load on an operator, includes a plurality of transmission apparatuses each including a cross-connect function unit and a communication function unit for sending and receiving messages using...http://www.google.fr/patents/US7079483?utm_source=gb-gplus-shareBrevet US7079483 - Ring network and method for path interchange therein
Ring network and method for path interchange therein
