| 摘要 |
When a user receives an online service by accessing a plurality of sites in turn, the user is immediately notified that the user cannot obtain the service since a certain site is out of service. A communication terminal accesses a first information processing apparatus and a second information processing apparatus in turn to execute communication, thereby obtaining the service. When a service intermediation apparatus receives a request for a service from the communication terminal, the service intermediation apparatus detects an operating state of the second information processing apparatus. Then, for example, if the second information processing apparatus is in operation, a link to the first information processing apparatus is provided as a response to the communication terminal. If the second information processing apparatus is out of operation, the link thereto is not provided.
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