Duplex digital span transmission circuit arrangement

Details Duplex digital span transmission circuit arrangement Duplex digital span transmission circuit arrangement

H - Electricity

04

Q

344/29

H04Q 3/54 (2006.01) H04B 1/74 (2006.01) H04Q 11/06 (2006.01)

Patent

CA 1217844

A DUPLEX DIGITAL SPAN TRANSMISSION CIRCUIT ARRANGEMENT ABSTRACT OF THE DISCLOSURE In a telecommunications switching system, a thick film digital span circuit arrangement is connected between a digital span and a switching network of the switching system. The transmission circuit arrangement converts unipolar switching network data to bipolar data for use by the digital span. The telecommunica- tions switching system provides for duplicated data transmission to the digital span. Duplicated transmis- sion circuits are arranged in an active/standby configu- ration under CPU control without affecting the overall impedance seen by the digital span.

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