公开(公告)号：US3875352A

公开(公告)日：1975-04-01

申请号：US39340873

申请日：1973-08-31

Applicant: PORTA SYSTEMS CORP

Inventor： CARAVELLO RONALD G ,  MICKOWSKI JOHN

IPC: H04M3/28 ,  H04M3/22

CPC classification number: H04M3/28

Abstract: Test equipment connectable via a multi-pair cable to a central office, branch exchange or key system distributing frame for performing operational checks on selected line pairs as well as for detecting idle-busy status is disclosed. The equipment is manually manipulated by a frame test man to make tests and may be used also to verify cable pair assignment to particular telephone numbers. The status of lines as well as test results are visually indicated.

Abstract translation: 公开了通过多对电缆连接到中心局的测试设备，用于对所选线路对执行操作检查的分支交换机或密钥系统分配帧以及用于检测空闲忙状态的测试设备。 设备由框架测试人员手动操作以进行测试，并且还可以用于验证对特定电话号码的电缆对分配。 线的状态以及测试结果被视觉显示。