| 发明名称 |
Test trunk access controller |
| 摘要 |
A test trunk access controller includes a test trunk interface controller accessed by a subscriber line assigned to a service provider, or other remote metering facility, and a test trunk interface device inter-connecting the test trunk controller with the test trunk device of a local telephone switch.
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| 申请公布号 |
US4646342(A) |
申请公布日期 |
1987.02.24 |
| 申请号 |
US19850774783 |
申请日期 |
1985.09.11 |
| 申请人 |
ITT CORPORATION |
发明人 |
HARGRAVE, FRANKLIN;ZELLER, JR., DAVID A.;SMITH, MARK G.;HULL, III, WILLIAM L.;MIDDLETON, FRANCISCO A. |
| 分类号 |
H04M3/28;(IPC1-7):H04Q9/00 |
主分类号 |
H04M3/28 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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