发明名称 |
Analog access arrangement for a digital telephone office |
摘要 |
Common digital line circuits are used in a digital telephone office to provide supervisory and digital conversion functions for any subscriber station connected to a digital telephone office. Subscriber stations are connected to specialized analog line circuitry via an analog access network when required.
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申请公布号 |
US4293738(A) |
申请公布日期 |
1981.10.06 |
申请号 |
US19790092877 |
申请日期 |
1979.11.09 |
申请人 |
GTE AUTOMATIC ELECTRIC LABS INC. |
发明人 |
STELTE, DAVID J.;KOBYLAR, ALEX W. |
分类号 |
H04Q11/04;(IPC1-7):H04M3/42;H04Q3/60 |
主分类号 |
H04Q11/04 |
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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