Signal control system

Details Signal control system Signal control system

H - Electricity

04

Q

344/25

H04Q 11/04 (2006.01)

Patent

CA 1182548

ABSTRACT OF THE DISCLOSURE In a time division switching system of the T-S-T arrangement, a speech path memory of each of forward and backward time switches has addresses corresponding to accom- modated lines and a speech signal and a non-speech signal (a signal indicating an on-hook or off-hook state and other control signals) are transmitted over a highway between each line module and a switch module. When speech channel is busy, the speech signal is read out from a speech path memory and written therein and transmitted to a remote station. Also when speech channel is idle, the non-speech signal is written in the speech path memory but, in this case, the non-speech signal is read out into a signal processor or a signal written in the speech path memory from the signal processor or a signal written in the speech path memory from the signal processor is read out on a line. With this arrangement, a memory for the exclusive use of the non-speech signal, which is required in the prior art for non-speech signal transmission can be disposed of and transmission control of control signals of various line modules can be simplified. The speech path memory is provided with a speech signal storage area and a non-speech signal storage area, by which it is possible to transmit a large amount of information as the non-speech signal in accordance with various line modules. - 37 -

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