| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique capable of rejecting reception of unnecessary data file.SOLUTION: A reception propriety setting section 27 of an incoming side terminal 20 sets reception propriety information of the incoming side terminal 20 set on the basis of a setting operation and indicating a reception priority of a data file interlocked with a communication call including sound to a relay server 30. A call control section 18 of a calling side terminal 10: when uploading the data file, confirms the reception propriety information of the incoming side terminal 20 obtained from the relay server 30 by a reception propriety acquisition section 16; when the reception propriety information indicates reception possibility, uploads data file addressed to the incoming side terminal 20 to the relay server 30; and when the reception propriety information indicates reception impossibility, stops to upload the data file. A call control section 28 of the incoming side terminal 20 downloads the data file addressed to the incoming side terminal 20 from the calling side terminal 10 and displays contents of the data file. |
