发明名称 |
Disconnector circuit arrangement |
摘要 |
A disconnector circuit arrangement for application on the main distributing frame of the central office telephone equipment, a subscriber is cut off from the central office and coupled instead to a recorded message. Any incoming calls attempting connection with such an out-of-service subscriber are answered instead by having the calling party coupled to a second recorded message. The circuit will cut off one phone on a party line and leave the others unaffected. The connection to the main distributing frame may be realized by a plug-jack arrangement.
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申请公布号 |
US3909543(A) |
申请公布日期 |
1975.09.30 |
申请号 |
US19740434328 |
申请日期 |
1974.01.17 |
申请人 |
INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION |
发明人 |
MILLER, HARLAN E. |
分类号 |
H04M3/487;(IPC1-7):H04M3/42 |
主分类号 |
H04M3/487 |
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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