Patent ID: 9014550
Filing Date: 2015-04-21
Classification: H04J

Abstract:
1. A transmission device that multiplexes a plurality of client signals into an Optical Data Unit (ODU) frame, and transmits the ODU frame to another device, comprising: an including unit that includes an input client signal in a payload portion, and generates an including frame which is an ODU frame of a predetermined format; a storage unit that stores identification information of a multiplexing unit that performs time division multiplexing on the client signal in association with a type of a client signal received by the including unit; a cross connecting unit that outputs the including frame generated by the including unit to the multiplexing unit represented by the identification information stored in the storage unit in association with the format of the including frame; a plurality of multiplexing units, each of which multiplexes the including frame input from the cross connecting unit into a transmission frame which is an ODU frame of a predetermined format by time division multiplexing; a transmission frame transmitting unit that transmits the transmission frame multiplexed by the multiplexing unit to another device; a backup multiplexing unit that multiplexes the including frame input from the cross connecting unit into a transmission frame of a predetermined format by time division multiplexing when one of the multiplexing units has a problem; and wherein the cross connecting unit outputs an including frame whose format matches a format of an including frame stored in the storage unit in association with identification information of the multiplexing unit having the problem among including frames generated by the including unit to the backup multiplexing unit when the multiplexing unit has the problem.