| 摘要 |
PURPOSE:To obtain a calling device with simple operation and low cost by forming an identification number whose high-order digit is assigned with a group number and whose low-order digit is allocated by an individual number for simultaneous and individual use and providing a storage circuit setting the identification number to each station. CONSTITUTION:At first, one and same group identification number 123 is set and then an allocated individual identification number is set. In calling individually a slave station 01 from a master station, the number 01 is set and called, then an identification number 12301 is sent through a MODEM 24 and a transmission section 25. Since the number is coincident with the number in the storage circuit 23 by a coincidence circuit 26, the slave station 01 is called. In calling the master station 00 from a slave station, since the number 12300 is set in the storage circuit 21, no setting is required and the number is set from the transmission section 25 and since the number is coincident with the number in the storage circuit 13, the master station is called. In calling simultaneously the slave stations, the master station sets a number 99 and calls the number, then the number 12399 is sent. Since the number is the same as the number stored in a storage circuit 22 of all the slave stations, the number is verified by the circuit 26 and all the slave stations are called simultaneously. |
