| 摘要 |
<p>Provided is a telephone exchange system capable of counting the number of incoming calls indicating a history of incoming calls to each telephone terminal, regardless of conditions such as a busy state, handset off-hook, failure, and the like, and displaying an incoming call history from a calling party on the telephone terminal prior to transmission of a call signal, upon arrival of an incoming call for the telephone terminal. A telephone incoming call control unit 21B of a communication apparatus B 20B counts the total number of incoming calls and the number of incoming calls for each communication type indicating the breakdown of incoming call operations, as incoming call history data 21B for each telephone terminal B 30B as a slave unit, retrieves the incoming call history data 21B on the telephone terminal prior to an operation of transmitting a call signal to the telephone terminal upon arrival of an incoming call from a certain calling party for the telephone terminal B 30B, extracts incoming call history data on the calling party from which the telephone terminal has received the incoming call, transmits the data to the telephone terminal when the telephone terminal is in an idle state, and causes an indicator 31B of the telephone terminal to display the data. The telephone incoming call control unit 21B thereafter transmits the call signal to the telephone terminal.</p> |
