Telephone signal transmission device

Details Telephone signal transmission device Telephone signal transmission device

H - Electricity

04

M

363/10

H04M 7/00 (2006.01) H04J 3/12 (2006.01) H04J 3/16 (2006.01) H04M 1/253 (2006.01) H04M 11/06 (2006.01)

Patent

CA 1273134

ABSTRACT OF THE DISCLOSURE A telephone signal transmission device capable of transmitting and receiving dial pulses in a network system which includes a telephone exchange is disclosed. Transitions of a connection signal are detected to allow a connection signal to be transmitted only when the transmission of a speech signal is needless. The connection signal is standardized one bit per frame and added to a transmission signal. The device effectively utilizes substantially all of the transmission bits for speech.

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