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公开(公告)号：EP0815704A1
公开(公告)日：1998-01-07
申请号：EP96910482.0
申请日：1996-03-20
申请人： RAYCHEM CORPORATION
IPC分类号： H04Q11
CPC分类号： H04Q11/04
摘要： According to a specific embodiment, a system for use with a subscriber line carrier such as a SLC-96. The system provides a multiplex channel unit (10) that inputs T1 line signals, and outputs multiple telephone line signals in a format such as 2B1Q over a twisted pair (13) to an RT (35). The RT (35) converts the full duplex multiplexed signals to analog service for a subscriber (12).
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公开(公告)号：EP0872067A1
公开(公告)日：1998-10-21
申请号：EP96918017.0
申请日：1996-06-04
申请人： RAYCHEM CORPORATION
CPC分类号： H04Q11/0471 , H04L5/02 , H04Q2213/13031 , H04Q2213/13106 , H04Q2213/13194 , H04Q2213/13204 , H04Q2213/13209 , H04Q2213/13292 , H04Q2213/13306 , H04Q2213/1332 , H04Q2213/13322 , H04Q2213/13381
摘要： Methods and apparatus for transferring two 4-wire analog data signals over a single twisted pair line. The two 4-wire analog data signals are converted into a multiplexed binary signal, the multiplexed binary signal is converted into a 2-wire digital encoded signal; the 2-wire digital encoded signal is transferred over a single twisted pair to a second location; and at the second location, the 2-wire digital signal is converted to a multiplexed binary signal, and the multiplexed binary signal is converted to two 4-wire analog data signals. The apparatus includes an easily installed dual 4-wire analog data central office terminal (100) and a dual 4-wire analog data remote terminal (110). The apparatus can provide a 4:1 pair gain by multiplexing signals representing the 4-wire analog data signals.
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公开(公告)号：EP1008248A1
公开(公告)日：2000-06-14
申请号：EP96917189.1
申请日：1996-06-03
申请人： RAYCHEM CORPORATION
IPC分类号： H04L5/02
CPC分类号： H04L5/02
摘要： A method and apparatus for transmitting and receiving signals for at least four channels between a telephone company location and a customer premises over a single twisted pair. At least four signal sources output at least four signals to a central office terminal unit or line card at the telephone company location. The line card receives and converts the at least four signals into a 288 kbps multiplexed binary signal, converts the multiplexed binary signal into a 2B1Q or 4B3T signal for transmission to the customer premises over a single twisted pair for use by a remote terminal.
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公开(公告)号：EP0815681A1
公开(公告)日：1998-01-07
申请号：EP96909770.0
申请日：1996-03-19
申请人： RAYCHEM CORPORATION
CPC分类号： H04L5/1492 , H04L5/02 , H04M1/253 , H04M11/068 , H04Q11/04 , H04Q2213/13034 , H04Q2213/13106 , H04Q2213/1319 , H04Q2213/13202 , H04Q2213/13216 , H04Q2213/13292 , H04Q2213/1332 , H04Q2213/13322 , H04Q2213/13381
摘要： A method and apparatus (200) for converting an analog voice channel signal and a 4-wire digital signal into a single 2-wire digital signal which can be transferred over a single twisted pair line (205). In one aspect, the method comprises the steps of converting the analog voice channel signal into a first binary signal, converting the 4-wire digital signal into a second binary signal, combining the first binary signal and the second binary signal into a higher rate binary signal, and converting the higher rate binary signal into a 2-wire digital signal which can be transmitted to another location over a single twisted pair line. In another aspect, the method comprises the steps of converting a 2-wire digital signal to a higher rate binary signal, separating a first binary signal and a second binary signal from the higher rate binary signal and converting the first binary signal into an analog voice channel signal, and converting the second binary signal into a 4-wire digital signal. The apparatus (200) includes an easily installed voice plus digital data remote terminal (203) and voice plus digital data central office terminal (201). The apparatus can provide a 3-to-1 pair gain by multiplexing signals representing the analog voice telephone signals and 4-wire digital data signals.
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