| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a communication system capable of surely performing communication securing a desired band width between terminals by reserving a band width for plural communication routes between the terminals and utilizing one of the communication routes whose reservation is established for the communication. SOLUTION: At the time of performing the communication from the terminal to the terminal, the application part 121 of a reception terminal generates a reservation message by the set contents of a reception path message. Further, a reception judgement part 127 judges the propriety of securing a request band width by the set contents of the reservation message by the request of an RSVP protocol processing part 122, and when it is possible, the application part 121 transmits the reservation message. In such a manner, for the reservation message, band reservation is established in all routers by the communication route which transfers the reservation message to a transmission side terminal only when the band is secured in all the routers on the route and the requested band is secured.</p> |
