发明名称 |
Arrangement for subscriber line ring testing |
摘要 |
An arrangement for automatically testing a plurality of subscriber lines, which are operationally connected to an electromechanical switching system is shown. Operational service is to be transferred from the electromechanical switching system to a digital switching system. This arrangement provides for automatically verifying whether the digital switching system is applying the proper ringing signal to each subscriber by a comparison with that applied by the electromechanical switching system.
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申请公布号 |
US4453048(A) |
申请公布日期 |
1984.06.05 |
申请号 |
US19820445801 |
申请日期 |
1982.12.01 |
申请人 |
GTE AUTOMATIC ELECTRIC INC. |
发明人 |
DANIELS, WILLIAM R.;YOUNG, JOHN S. |
分类号 |
H04M3/26;H04M3/30;(IPC1-7):H04M3/26 |
主分类号 |
H04M3/26 |
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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