Terminal for data transmission over an analogous bidirectional line with echo cancellation coupled to the reception clock

Short Terminal data transmission on a bidirectional voieanalogique with échocouplée cancellation rate reception between a transmitting circuit (5) and a receipt-ing circuit (6) coupled to a line (1) bya bidirectional hybrid coupler (2 ), an echo canceller (7) synthétiséun echo estimated from samples of an analog-cal signal (S), sampled at the same frequency (FE) that signed it; received (R), the sampling frequency (FE) being controlled by the receiving circuit (6), nonsynchrone of the transmission circuit (5). Such a device does not require an interpola tion filter to the input of the receiving circuit (6) and allows optimum lecouplage of the echo canceller (7) with an EGA-liseur.