发明名称 |
Method and apparatus for selectively generating control signals in a telephone system |
摘要 |
An improvement to a telephone system (10) having a first signal generator (21) which outputs a control signal only when it receives a certain request signal generated by the telephone system's client telephone (12). The invention contemplates a method and apparatus to generate a desired control signal when a request signal incapable of activating the first signal generator is produced by a client telephone (12).
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申请公布号 |
US5490214(A) |
申请公布日期 |
1996.02.06 |
申请号 |
US19940273110 |
申请日期 |
1994.07.08 |
申请人 |
VOICE TECHNOLOGIES GROUP, INC. |
发明人 |
STRAITIFF, DAVID M.;DRZEWIECKI, ROBERT R. |
分类号 |
H04M1/53;(IPC1-7):H04M1/53 |
主分类号 |
H04M1/53 |
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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