发明名称 |
Telephone misuse prevention method for digital PBX |
摘要 |
The misuse prevention involves use of an identification transmitted from the subscriber appts of the calling subscriber (KE) to the exchange, for verification by comparison with a stored subscriber identification list, before the connection can be made. The misuse prevention may be brought into operation only when a connection to a high tariff zone is required, e.g. when an international call connection is requested.
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申请公布号 |
DE19518558(A1) |
申请公布日期 |
1996.11.21 |
申请号 |
DE19951018558 |
申请日期 |
1995.05.19 |
申请人 |
SIEMENS AG, 80333 MUENCHEN, DE |
发明人 |
SCHUON, ULRICH, DIPL.-ING., 82178 PUCHHEIM, DE |
分类号 |
H04M1/66;H04M3/38;H04M15/00;(IPC1-7):H04M1/66;H04M1/53 |
主分类号 |
H04M1/66 |
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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