Patent ID: 8335843

Claim:
A communication system including a receiver and a transmitter, the transmitter adding binding information to communication data and transmitting the communication data respectively via multiple communication lines to the receiver, the receiver comprising: a plurality of data storage queues provided for each communication line of the multiple communication lines, that respectively receive and store the communication data transmitted from the transmitter via each communication line; a data identification information comparison unit that compares the communication data from the transmitter respectively stored in each data storage queue, wherein a trap occurrence time information identifying a time that a trap occurred is included in the binding information, and wherein the data identification comparison unit selects one of the communication data stored in the plurality of the data storage queues based on a sequential number for identifying communication data when compared data includes a same trap occurrence time information in the binding information, and that selects one of the communication data stored in the plurality of storage queues based on trap occurrence time information when compared data includes different trap occurrence data in the binding information; and a data storage area that stores the one of the communication data selected by the data identification information comparison unit, wherein when the trap occurrence time information of plural data are different, data having a newer trap occurrence time is held in a data storage queue, while data having an older trap occurrence time extracted from the data storage queue is discarded when data identical to data extracted from the data storage queue exists in the data storage area and data having an older trap occurrence time extracted from the data storage queue is stored into the event data storage area when data identical to data extracted from the data storage queue is not stored in the data storage area.