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Telephone updating via network provided information
| Details |
Inventors: Hamada, Noboru;
Assignee: Canon Kabushiki Kaisha (Tokyo, JP)
Primary Examiner: Zele; Krista
Assistant Examiner: Weaver; Scott L.
Attorney, Agent or Firm: Morgan & Finnegan LLP
A communication terminal apparatus is so adapted that when an outgoing call to the terminal of a desired party ends in failure, it is determined whether the cause of the failure is a change in the terminal number of the party's terminal. This determination is made based upon cause-indicating information contained in a message received via a communication line. In a case where it is found that the cause of the failure is a change in the party's terminal number, the new terminal number is acquired from the received message. A recall operation is then performed to place the outgoing call again, this time to the new terminal number that has been acquired. |
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DETAILED DESCRIPTION An object of the present invention is to provide a communication terminal apparatus in which, when the telephone number of a party to communication has changed or missed, it is possible to update the old telephone number of this party, which has been registered in the terminal apparatus on the calling side, to the new telephone number.
According to the present invention, the foregoing object is attained by providing a communication terminal apparatus comprising a data base for storing terminal-number information of a plurality of parties to communication, calling means for placing an outgoing call in accordance with the terminal number information stored in said data base, determination means which, when the outgoing call has failed, is for determining whether the failure of the outgoing call has been caused by a change in the party's terminal number or missing number and updating means for updating the terminal number, which has been stored in said data base prior to the change, to the new terminal number in a case where said determination means has determined that the failure of the outgoing call has been caused by a change in the party's terminal number, or invalidating the terminal number, which has been stored in said data base in a case where said determination means has determined that the failure of the outgoing call has been caused by missing number.
Other features and advantages of the present invention will be apparent from the following description taken in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof.
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