| 摘要 |
A method for displaying a state of an extension of a keyphone system interworking with a mobile terminal is provided to allow users of each extension to recognize that a corresponding extension of a keyphone system is busy as it is communicating with a mobile terminal. An incoming call is received by a certain extension of a keyphone system(S21). It is checked whether a call forwarding function of the corresponding extension has been registered in the keyphone system(S22). A destination, to which the call is forwarded as interworking with the corresponding extension, is searched(S23). A display lamp of the corresponding extension blinks in each keyphone terminal(S24). The incoming call is forwarded to the destination(S25). A speech path is connected between the destination and a caller(S26). The display lamp of the corresponding extension is turned on in each keyphone terminal(S27). |
