4-vf line multiplexer

H - Electricity – 04 – J

Patent

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Details

H04J 3/00 (2006.01) H04L 5/02 (2006.01) H04M 3/00 (2006.01)

Patent

CA 2222622

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.

Procédé et appareil pour la transmission et la réception de signaux sur au moins quatre voies entre une installation de l'entreprise téléphonique et les locaux d'un abonné, et ce par l'intermédiaire d'une seule paire torsadée. Au moins quatre sources de signaux émettent au moins quatre signaux en direction d'une unité terminale de central ou d'une carte de ligne au niveau de l'installation téléphonique. La carte de ligne reçoit les signaux et les transforme en signal binaire multiplexé à 288 kbps, puis elle transforme ce signal binaire multiplexé en signal 2B1Q ou 4B3T à transmettre vers les locaux de l'abonné par l'intermédiaire d'une seule paire torsadée en vue de son utilisation par un terminal distant.

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