| 摘要 |
<p>Provided are a communication system, a relay apparatus and a communication apparatus wherein transmitted information of a communication apparatus connected to a communication line can be registered and the extensibility is high. A vehicle-mounted type of communication apparatus (5) transmits, to a relay apparatus (3), transmitted information and received information stored in the vehicle-mounted type of communication apparatus (5). The relay apparatus (3) performs a process of recording, which is based on the transmitted information and received information, into a relay information table. On the basis of the information recorded anew into the relay information table, the relay apparatus (3) can relay frames transmitted and frames received by the vehicle-mounted type of communication apparatus (5), resulting in an enhanced extensibility of communication system.</p> |
