| 摘要 |
PROBLEM TO BE SOLVED: To allow a receiver side user to grasp timing when the conversation can be started by allowing the receiver side user to recognize start of talking by a caller side earlier than that by a conventional method. SOLUTION: A terminal 1 of a caller side detects start of talking and transmits the information to all receiver terminals 2, 3. When the receiver side terminals 2,3 receives the information denoting the start of talking from the caller side terminal 1, the receiver side terminals 2,3 display a message to specify the caller side terminal 1. In the case that the display of the message to specify the caller side terminal 1 is finished by the receiver side terminals 2,3, the caller side terminal 1 detects the end of talking and transmits the information to the receiver side terminals 2,3 or the receiver side terminals 2,3 detects the end of talking from the end of voice data and terminate the display of the message to specify the caller side terminal 1 on the opportunity of the detection.
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