| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that a repeating device to be used is narrowed down under an assumption that the use of the repeating device of an IP address close to an IP address of a terminal such as a video conference terminal allows transmission/reception of image data of high picture quality and voice data of high sound quality, conventionally, and therefore, the assumption may not be right depending upon the environment of a network. <P>SOLUTION: Previous transmission information (ping) is transmitted/received between transmission terminals 10aa, 10db through two or more repeating device candidates 30a, 30b, and the repeating devices are narrowed down to the repeating device that relayed prescribed information with a shortest required time for the transmission/reception, thereby realizing the transmission/reception of image data or voice data with high quality to the greatest extent under an actual communication network environment. <P>COPYRIGHT: (C)2012,JPO&INPIT |
