| 摘要 |
PURPOSE:To simplify the input operation in applying light control from a telephone set by allowing a main operation panel to control the lighting load corresponding to a telephone set operated in response to the operation of each telephone set. CONSTITUTION:In entering an extension representative number and a number representing the content of control from a telephone set 11, a control signal in response to the operation is inputted to a private branch of exchange 9 as a DTMF signal. A specific address number is given to each telephone set and the telephone set 9 generates an address number of the telephone set receiving the DTMF signal and gives the data representing the address number and the control signal such as the DTMF signal to the main operation panel 1 via an interface panel 7. Then an allocation section 19 of the main operation panel 1 applies allocation of the load to be controlled for lighting. In this case, it is not required to enter the number to specify the lighting load, then the input operation by the telephone set is simplified. |
