公开(公告)号：DE3266827D1

公开(公告)日：1985-11-14

申请号：DE3266827

申请日：1982-07-23

Applicant: IBM

Inventor： MELAS CONSTANTIN MICHAEL

IPC: H04Q3/545 ,  H04Q3/52 ,  H04Q3/64 ,  H04Q3/68

Abstract: A method is described for rearranging signal paths in a three stage (primary, intermediate, tertiary) switching network to permit data or digitized voice signals to be transmitted from any given primary outlet to any given tertiary inlet. The intermediate stage has fewer inlets than the number of primary stage outlets and fewer outlets than the number of tertiary stage inlets, making the network a conditionally blocking one. Two call rearranging buses (CR1, CR2) are provided to assure that each signal path being rearranged is maintained to prevent data transmission drop outs. Primary to intermediate and intermediate to tertiary paths are rearranged one at a time using the call rearranging buses to "move" free primary and tertiary links to a single intermediate matrix.

公开(公告)号：DE1197515B

公开(公告)日：1965-07-29

申请号：DEJ0018984

申请日：1960-11-08

Applicant: IBM

Inventor： MELAS CONSTANTIN MICHAEL

IPC: H03K3/282