公开(公告)号：CA1210841A

公开(公告)日：1986-09-02

申请号：CA440704

申请日：1983-11-08

Applicant: IBM

Inventor： BOISSEAU MARC ,  BORIE JEAN C ,  CROISIER ALAIN ,  DEMANGE MICHEL ,  LEBIZAY GERALD ,  ROSSI JEAN-PIERRE P

IPC: H04Q11/04 ,  H04Q11/06

Abstract: A TIME-SPACE-TIME SWITCHING NETWORK USING A CLOSED-LOOP LINK A switching network for selectively connecting at least one input time-division channel on an input link (IL) to at least one output time-division channel on an output link (OL). The network is organized around a closed-loop link on which circulates a multiplex message carrying 512 time-division exchange channels. The input and output links are respectively multiplexed onto an input multiplex link (IML) and an output multiplex link (OML) which are coupled to the closed loop by a switching module (SM). Each switching module comprises an input buffer (IB), an output buffer (OB) and a local buffer (LB) the addressing of which is selectively controlled by a time slot counter (CTR) or a corresponding pointer memory. So-called "broadcast" connections coupling one input channel to several output channels, and "in-cast" connections coupling several input channels to one output channel, can be established. Each of these connections uses only one exchange channel.