| 摘要 |
PURPOSE:To realize an artificial call testing system which eliminates the need for manual reconnection while simplifying a control program, by decentralizing processing functions of a switching sequence. CONSTITUTION:Information on a connection procedure from a cetral control part CPU is sent to subscriber testing circuits 1-(m) and a control part CTLB controls a subscriber circuit test part LCC in its system to control both a calling subscriber and a called subscriber line. From the testing circuits 1-(m) to the CPU, normal or abnormal termination information is transferred through switching and connecting operation on the side of a switchboard body EX. A line concentration control part CONT receives information on the calling or called subscriber, etc. from the CPU, to send an order signal from a control part CLTA to a switch control part SC, and connect an input terminal Cx of a line concentration part CX to an output terminal TEx through switching to send a connection termination signal from the CONT to the CPU, thus completing one sequence. |
