| 摘要 |
PURPOSE:To erase the interruption of a conference, a business talk or an experiment due to a non-emergent call by transmitting a condition, in which a slave station device is set, to a master station device as an answer-back signal. CONSTITUTION:When a person to have the slave station device goes into the conference, the two switches for condition set of a switch device 28 are operated and the answer-back signal of '0001' is set and stored to the memory in a CPU26. On the other hand, in the master station device, in order to call this slave station device, a keyboard 18 is operated and the number, etc., of this slave station is instructed. According to this instruction, a CPU1 6 reads a correspondent identifying number from a memory 19 and switches a changing- over switch 12 to a receiving side and the answer-back signal is received. A meaning to correspond to a code signal is read from the memory 19 by the received answer-back signal and displayed on a display device 20. Thus, the information during the conference or business talk, etc., can be transmitted to the master station. |
