发明名称 Telecommunications line test extension apparatus
摘要 An apparatus is provided for testing a communications line. The apparatus comprises a spool having at least eight terminals, and a length of wire wound on the spool. The wire has at least four subpairs of wires, each of which has opposite ends. A first end of each of the subpairs of wires is electrically connectable to the communications line, and a second end of each of the subpairs of wires is electrically connected to a corresponding terminal on the spool.
申请公布号 US6813339(B2) 申请公布日期 2004.11.02
申请号 US20020151482 申请日期 2002.05.17
申请人 SBC TECHNOLOGY RESOURCES, INC 发明人 KRACKER DENIS JOSEPH;SNIDER MICHAEL WAYNE
分类号 H04M1/24;H04M3/08;H04M3/28;H04Q1/14;(IPC1-7):H04M1/24 主分类号 H04M1/24
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