DIGITAL ELECTRONIC AUTOMATIC TELEPHONE EXCHANGE Russian patent published in 1998 - IPC

FIELD: communication equipment, applicable for spatial-time switching of subscriber's lines and junctions. SUBSTANCE: automatic telephone exchange uses 256 terminal modules including the modules of subscriber's lines with a capacity of 100 subscriber's lines and modules of junctions with a capacity of 32 junctions. Besides, the telephone exchange has a double-stage digital switching field including 32 first-stage switching modules with a capacity of 8 two-sided digit tracks equal to 2048 KBit/s and 8 second-stage switching modules with a capacity of 32 two-sided digit tracks equal to 2048 KBit/s. Each switching module of the first stage is connected to each switching module of the second stage. EFFECT: enhanced reliability of trouble-free functioning of home-made digital electronic automatic exchange with a distributed control. 1 wdgi