发明名称 HOLDING RECONNECTION SYSTEM OF EMERGENCY CALL CIRCUIT
摘要 PURPOSE:To omit the trouble where a commander performs storage by own operation and to attain the reconnection with a quick operation, by storing successively the held circuit numbers to a controller for connection to a command board for each command board. CONSTITUTION:The holding operations and the holding reconnection operations of circuits are all coded to command boards 21-2n of a holding reconnection system. These codes are always scanned by a scan part 7 of a controller 4 for each command board. A memory circuit 10 of the controller 4 stores the circuit numbers connected every command board in the holding order. The circuit numbers are stored to the circuit 10 by the holding operations of the boards 21-2n and based on the held circuit numbers. Then a holding ON signal is turned on via a trunk control part 5 to the corresponding circuit trunk 1. Thus a holding state is secured and at the same time a switch 3 is turned off via a switch control part 5. This attains the reconnection with a simple and quick operation.
申请公布号 JPS6113740(A) 申请公布日期 1986.01.22
申请号 JP19840133715 申请日期 1984.06.28
申请人 NIPPON DENKI KK 发明人 IGARASHI OSAMU
分类号 H04M3/60;(IPC1-7):H04M3/60 主分类号 H04M3/60
代理机构 代理人
主权项
地址