| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to refuse to receive unnecessary data files.SOLUTION: A reception permission/rejection setting unit 27 in a called-side terminal 20 sets, to a relay server 30, reception permission/rejection information on the called-side terminal 20 that is set according to setting operation and indicates the reception permission/rejection of a data file linked with a call including voice. A call control unit 18 in a calling-side terminal 10 checks the reception permission/rejection information on the called-side terminal 20 obtained from the relay server 30 by a reception permission/rejection acquisition unit 16 when a data file is uploaded, uploads the data file destined to the called-side terminal 20 to the relay server 30 if the reception permission/rejection information indicates reception permission, and stops upload of the data file if the reception permission/rejection information indicates reception rejection. A call control unit 28 in the called-side terminal 20 downloads, from the relay server 30, the data file from the calling-side terminal 10 destined to the called-side terminal 20 and displays the contents of the data file on a screen.SELECTED DRAWING: Figure 1 |
