| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique capable of reducing drop in communication efficiency, when a service device is not operated normally, in a network compatible with a network-type plug and play. SOLUTION: A device unit has the N-number (N is an integer of 1 or larger) of service devices. A network relay device, compatible with the network-type plug and play, is provided with a description preparing part for preparing a device description for describing the service devices included in the network-type plug and play, and for supplying the device description, in response to a request from a client over a network. The description preparing part prepares the device description that does not include the description of the inoperable service device to be supplied to the client, when one or more of the service devices are inoperable from among the N-number of service devices included in the device unit. COPYRIGHT: (C)2007,JPO&INPIT
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