Patent ID: 8873726
Filing Date: 2014-10-28
Classification: H04Q

Abstract:
1. A telephone exchange system comprising: a communication apparatus that controls communication between telephone terminals each connected as a unit; and the telephone terminals, wherein the said communication apparatus includes incoming call history data storing the number of busy incoming calls indicating the number of denied incoming calls due to a busy state of the telephone terminal, for each of the telephone terminals, upon detecting an incoming call from a calling party to the telephone terminal, prior to an operation of transmitting an incoming call signal to the said telephone terminal, the said communication apparatus retrieves the incoming call history data on the said telephone terminal and extracts history data of the incoming calls from the said calling party to the said telephone terminal, and when the said telephone terminal is in an idle state, the said communication apparatus transmits the extracted history data of the said calling party to the said telephone terminal and transmits the incoming call signal to the said telephone terminal.