发明名称 |
Telephone line access arrangement |
摘要 |
A telephone line access arrangement for a telephone instrument and a modem gives priority to the telephone instrument in all instances. A microprocessor controls the modem and receives an input signal that is indicative of the existence of an off hook state for the telephone instrument. Logic device generates the input signal based upon the different electrical conditions characterizing the telephone instrument and the modem.
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申请公布号 |
US6049605(A) |
申请公布日期 |
2000.04.11 |
申请号 |
US19970866611 |
申请日期 |
1997.05.30 |
申请人 |
ZENITH ELECTRONICS CORPORATION |
发明人 |
RIZZO, DANIEL J. |
分类号 |
H04M1/723;H04M1/82;H04M11/06;(IPC1-7):H04M1/00 |
主分类号 |
H04M1/723 |
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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