| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a relay server that realizes communication between network devices in a plurality of local systems via the Internet and attains participation of the other network device to the communication. SOLUTION: A terminal going to make communication logs in the relay server 4 to reserve an access, in advance. Then a terminal 11 transmits access request information to terminals 21, 51 to the relay server 4 to allow in-group communication among the terminals 11, 21, 51. An access information storage section 43 stores the group access information in this case. The other network device requests the relay server 4 to search access information and can receive the result of search. A terminal uses the received access information to make a subscription request to a group and consolidates the groups and reproduces communication by using the past access information.</p> |
