SWITCHING DEVICE Russian patent published in 1994 - IPC

FIELD: electric communication equipment. SUBSTANCE: switching device includes N x N homogeneous modules each having nine inputs and nine outputs. Each homogeneous module has N control units each containing receiver, pulse counter, two adders, two units of generation of ternary signals, four comparators, two supplementary code-to-direct code converters, matrix-decoder, tester (AND gate), signal encoder, two matching units. EFFECT: possibility of use in design of electron and fibre-optical automatic telephone stations. 1 tbl, 4 dwg