| 摘要 |
Provided is a computer system, comprising a management server and a presence server. The user terminals include a first user terminal for originating a question and a second user terminal for responding to the question originated from the first user terminal. The management server comprising: an interface coupled to the network; a processor coupled to the interface; and a memory coupled to the processor. The management server calculates an unresponsive time taken until the second user terminal becomes ready to receive a notification of the question transmitted from the first user terminal by referring the presence information acquired from the presence server upon detection of an origination of the question from the first user terminal, estimates an expected response time of the second user terminal based on the calculated unresponsive time, and notifies the first user terminal of the estimated expected response time.
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