Impulse regeneration
14 January 1940
The impulse regenerator has been used to eliminate distortions which have arisen as the result of line and exchange conditions. With impulse correction there is no appreciable delay between the sending of a train of impulses and their reception. With a regenerator, having stored the impulses on arrival, means exist to determine whether to re-transmit the digits as received or to operate differently. This characteristic classes the regenerator as a type of register which serves in its original form as a means of impulse improvement and in its subsequent development as a means for translating the digits dialled in order to effect switching economies. The principal applications of the regenerator are: (1) impulse storage and regeneration, (2) storage while forward circuits are being prepared, (3) storage under delayed search conditions, (4) storage of digits totalling more than available switch contacts, (5) alternative trunking, (6) conversion of dialling conditions, (7) digit discrimination in satellite exchanges, (8) toll dialling, (9) circuit timing. The paper deals with these various points.