| 摘要 |
A communication device (1) comprising an upper layer communication control unit (2) having a plurality of upper layer communication protocols (5, 6, 7); a lower layer communication control unit (3), subordinated to the upper layer communication control unit, having a function to forming an inter-upper-layer communication by transmitting the data sent from the upper layer communication control unit to a communication transmission path or sending the data received from the communication path to the upper layer communication control unit; and a communication path register memory (4) for storing a set of the address of a communication partner device, the discriminator of the upper layer communication protocol being used and the name of a communication path. In the above communication device, a request of setting/cancelling of the communication path, or a transmission request as well as designation of the communication path to be used is performed from the upper layer communication control unit (2) to the lower layer communication control unit (3), and indication of setting/cancelling of the communication path, or indication of the communication path used as well as reception indication is performed from the lower layer communication control unit (3) to the upper layer communication control unit (2).
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