A communication network system (100) comprising at least three nodes, which are interconnected by transmission links (110) carrying traffic to and from the nodes. The transmission links (110) are divided into a working ring (112) and a protection ring (114) where the working ring (112) and the protection ring (114) can transmit traffic in opposite directions. A node is able to detect when an error occurs in the intermediate surrounding, transmission links (110), or the node. Each node can by itself divert traffic from the working ring (112) to the protection ring (114) and/or by itself divert traffic from the protection ring (114) to the working ring (112). A recovery action can be done when the error is healed.
申请公布号
WO9701907(A1)
申请公布日期
1997.01.16
申请号
WO1996SE00794
申请日期
1996.06.18
申请人
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL);MERLI, STEFANO;TESTA, FRANCESCO;NORBIATO, RENATO;ANDREOZZI, PAOLO
发明人
MERLI, STEFANO;TESTA, FRANCESCO;NORBIATO, RENATO;ANDREOZZI, PAOLO