DIGITAL TRANSFER SYSTEM FOR FOUR-WIRE COMMUNICATION LINE Russian patent published in 2005 - IPC

FIELD: digital communications.

SUBSTANCE: device has two end stations A and B, interconnected by four-wire cable communication line, station A has three quadrature receipt modules, three pulse transfer modules, station B has three quadrature transfer modules and three pulse receipt modules, each station has three lower frequencies filters, three upper frequencies filters, device for dividing full digital flow on three sub-flows, device for joining three sub-flows as one full digital flow and three linear converters.

EFFECT: increased bandwidth and increased maximum length of regeneration portion.

4 tbl, 4 dwg