Communication switching system

Details Communication switching system Communication switching system

H - Electricity

04

Q

344/25

H04Q 11/04 (2006.01) H04J 3/16 (2006.01) H04L 12/52 (2006.01) H04L 12/56 (2006.01) H04L 12/64 (2006.01)

Patent

CA 2006102

ABSTRACT COMMUNICATION SWITCHING SYSTEM In this system STM (Synchronous Transfer Mode) and ATM (Asynchronous Transfer Mode) cell streams are supplied to corresponding STM and ATM switching exchanges STME and ATME via the cascade connection of a multiplexer (MUX), a transmission link (L1) and a demultiplexer (DMUX). The MUX and DMUX are each constituted by a switching element with a plurality of inputs (I1/2; I3) and outputs (O3, O4/5) coupled to a common switching means (SB1, TM1; SB2, TM2) via respective receiver (RC1/3) and transmitter (TC1/3) circuits. The common switching means samples the input cell streams at a frequency at least equal to the sum of the time slot frequencies of the time frames of the input cell streams. The time frames of the input and output cell streams are phase synchronous and the sampling of the input cell streams is performed in a predetermined order. The cells of the resultant (STM/ATM) cell stream are supplied to the transmitter circuits in function of their destination.

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