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.
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
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