| 摘要 |
PROBLEM TO BE SOLVED: To allow the slave unit of the other party of communication desired by a caller to be selected without the need for manually setting whether or not to accept a call request on the slave unit side.SOLUTION: Slave unit telephone directory information is received from each slave unit 200 and then stored in a slave unit telephone directory database 13a after being correlated with slave unit identification numbers. Destination telephone numbers acquired from the origination data of each slave unit 200 are stored in a slave unit origination history database 13b after being correlated with a cumulative time of telephone communication with the destinations. When an incoming call from a telephone 300 is received, the telephone number from which the call was transmitted is checked against the telephone directory information of each slave unit and all of slave unit identification numbers corresponding to a matched telephone number are acquired from the slave unit telephone directory database 13a. Then, the origination telephone number of the incoming call is checked against the destination telephone numbers from each slave unit of all slave unit identifiers narrowed down by the acquisition, and a slave unit 200 corresponding to a matched telephone number, which is longest in communication time is made a called slave unit. |
