发明名称 |
Arrangement for multiple custom calling |
摘要 |
The arrangement described herein provides for simple control and minimal program impact of a central office switching system for interfacing multiple custom calls. This arrangement employs a few simple trunks connected in a loop around configuration. The arrangement shown considers the connection of a telephone subscriber to a call waiting subscriber who is already engaged in another custom calling subscriber's call waiting call.
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申请公布号 |
US4446554(A) |
申请公布日期 |
1984.05.01 |
申请号 |
US19810316377 |
申请日期 |
1981.10.29 |
申请人 |
GTE AUTOMATIC ELECTRIC LABS INC. |
发明人 |
WEBBER, ROBERT C. |
分类号 |
H04M3/42;H04Q11/06;(IPC1-7):H04Q11/04 |
主分类号 |
H04M3/42 |
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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