PCM signal switching system employing an integrated and programmable matrix

摘要

The invention relates to a PCM switching system employing elementary switching matrixes controlled by a control microprocessor (µP).Each elementary matrix including:one programming and control block for incoming flows (BP_GFE) suitable to receive flows whose bit-rate can be separately programmed;one programming and control block for outgoing flows (BP_GFU) suitable to make available at output flows whose bit-rate can be separately programmed;one timing receipt and distribution block (BR_DT),one synchronism phase shifting detection block (BRSS),one microprocessor interface block (BIM).