| 摘要 |
PROBLEM TO BE SOLVED: To provide an ISDN service confirmation method whereby a user or the like can easily confirm contents of a contract of an ISDN additional service or the like. SOLUTION: The ISDN terminal transmits an additional information message U1 for inquiring contents of the additional service with a user makes a contract to a network side in response to a contract content confirmation request of the ISDN additional service, receives an additional information message U2 for informing the user about contents of a contracted additional service sent from the network in response to the inquiry by the additional information message U1, analyzes a feature identifier number of a feature indication of the received additional information message U2, confirms contents of the additional service with the user makes a contract, and displays the contents of the confirmed additional service on an LCD 3. COPYRIGHT: (C)2003,JPO
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