Patent ID: 7724731

Claim:
A transmission network comprising a transmission node and a receiving node, wherein a path is set between said transmission node and said receiving node and a transmission signal of a high-order group signal containing a low-order group signal is transmitted between the nodes, wherein said transmission node comprises: a first path-setting-receiving section for receiving a content of a change in a path setting when said path setting to be applied to said transmission signal is changed; a transmission-path-setting change section for changing a path setting of said transmission node based on said content received by said first path-setting-receiving section; and a change insertion section for reporting information about said content of the change in path setting received by said first path-setting-receiving section to said receiving node by inserting said information into said transmission signal to be transmitted from said transmission node to said receiving node; and wherein said receiving node comprises: a second path-setting-receiving section for receiving information about said change in path setting inserted into said transmission signal from said transmission node; and a receiving-path-setting change section for changing a path setting of a node based on said information about said change in path setting received by said second path-setting-receiving section, wherein, said transmission-path-setting change section comprises: a crossconnect processing section that subjects a low-order group signal to crossconnect processing based on a crossconnect setting to define a transmission path of the low-order group signal to be transmitted to said receiving node; and a crossconnect command section that commands said crossconnect processing section to change the crossconnect setting based on the change in the path setting received by said first path-setting-receiving section.