To secure sure data transmission, even when a traffic load of a data transmission bus in high by using both a connection type data transfer system and a connection less type data transfer system.

An IP packet communications equipment that uses an asynchronous communication channel and an isochronous communication channel to process IP packets, includes an address table that stores attribute information of transmitted IP packets, which include information denoting presence/absence of transmission within a prescribed interval, a transmission monitor section that periodically monitors information of the address table, and a CMP processing section, that receives discrimination information discriminating the consecutiveness of the traffic to set up a communication channel for the asynchronous transfer.