发明名称 |
POWER LINE TELEPHONE COMMUNICATIONS SYSTEM HAVING ON HOOK DIGITAL VOICEBAND MESSAGING |
摘要 |
A power line telephone communications system having an ON HOOK digital voiceband messaging feature by which selected information contained in an incoming call to a telephone is received prior to the telephone being lifted off its hook. The incoming ring signals, ON HOOK digital voiceband messaging and information signals are conducted by a base unit to the power line for transmission to an extension unit to which a telephone is connected.
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申请公布号 |
WO9704537(A1) |
申请公布日期 |
1997.02.06 |
申请号 |
WO1996US11061 |
申请日期 |
1996.06.27 |
申请人 |
ELCOM TECHNOLOGIES CORPORATION |
发明人 |
HOUVIG, FELIX;PATEL, CHANDRAKANT, BHAILALBHAI |
分类号 |
H04M3/42;H04B3/54;H04M1/57;H04M1/72;H04M11/00;(IPC1-7):H04B3/54 |
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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