Patent ID: 11924740
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A signal forwarding system comprising: a plurality of signal forwarding devices forming a plurality of communication routes between a slave station and a master station; and a route control device that determines a communication route of a signal communicated between the slave station and the master station, wherein
the route control device comprises at least a first one or more processors and a first one or more storage mediums having first computer program instructions stored thereon that, when executed by the first one or more processors, perform to: calculate a forward destination communication route in response to a route switching request; and output forward destination setting information to the signal forwarding devices based on the communication route calculated,
the signal forwarding devices comprise at least a second one or more processors and a second one or more storage mediums having second computer program instructions stored thereon that, when executed by the second one or more processors, perform to: acquire the forward destination setting information from the route control device; change a forward destination of the signal based on the forward destination setting information acquired; and outputs input traffic based on the forward destination, and
any of the first and second computer program instructions, when executed, further perform to:
monitor the traffic;
estimate a non-signal period in which the traffic does not flow based on the traffic monitored; and
control a timing of switching the communication route to perform route switching in the non-signal period estimated.