| 摘要 |
PURPOSE:To obtain a simply-operated system which makes button selctions possible through cordless connections among trunks with no need for sizing large the constitution of a test equipment even if the number of trunks increases at the time of connecting the test equipment to trunks. CONSTITUTION:A plural number of trunks TRK0 to TRKn are provided which which are connected to a plural number of subscriber's -line test equipments LTD0 to LTDm, and switchboard SW; talking circuits from those trunks TRK0 to TRKn are equipped at one side, and line concentratos LC0 to LCm to which subscriber's- line test equipments LTD0 to LTDm are connected via a small number of takling circuits are provided at the other side. In addition, line-concentrator controller LCC is provided to line concentrators LC0 to LCm in common, and it is made possible through the control of controller LCC to connect one of trunks TRK0 to TRKn which has received an incorming from the switchboard-SW side or is assigned by one of subscriber's-line test equipments LTD0 to LTDm via LC0 to LCm. |
