| 摘要 |
PURPOSE:To simplify the processing of reservation communication by inquiring the conditions of a terminating side reservating terminal when the permission of reservation is decided by the center side, and determining the final validity/ invalidity of reservation formation based on the inquired result. CONSTITUTION:Receiving reservation information from a reservation terminal 4, a center 11 retrieves the idle status of a required communication equipment in a network from a file 14 based on the received information, and at the validity of invalidity to the reservation requesting terminal 4. In case of validity, the center 11 retrieves the reservation terminal included in the receiving side communication terminals and inquires the validity/invalidity of reservation to the retrieved terminal. If the reservation is validated as the result of inquiry, the preceding information is kept as it is, but when invalidated, information indicating the invalidity reservation is sent to the terminal 4 and cancels the precedently sent information of validity.
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