Communication line terminating unit, modem and central...

Details Communication line terminating unit, modem and central... Communication line terminating unit, modem and central...

H - Electricity

04

M

H04M 11/06 (2006.01) H04L 5/06 (2006.01)

Patent

CA 2284337

A communication line terminating module (TM), capable to receive and transmit telephone signals and digital data comprises a transmitting path (DP, COM, DA, F, LD, H) for the telephone signals and digital data, and a receiving path (H, LR, F', AD, SEP, DP) for the telephone signals and digital data. The transmitting path (DP, COM, DA, F, LD, H) includes the cascade coupling of digital processing means (DP), digital combining means (COM) for combining the telephone signals and said digital data in the digital domain, digital to analogue conversion means (DA), filter means (F), line driver means (LD) and line coupling means (H). The receiving path (H, LR, F', AD, SEP, DP) on the other hand includes the cascade coupling of line coupling means (H), gain control means (LR), filter means (F'), analogue to digital conversion means (AD), digital separating means (SEP) for separating the telephone signals from said digital data in the digital domain, and digital processing means (DP). The communication line terminating module (TM) does not include a bulky POTS (Plain Old Telephone Service) splitter with analogue filters.

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