Multiplex communications – Wide area network – Packet switching
Patent
1994-09-29
1996-03-05
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 56, 370 68, H04J 308
Patent
active
054973635
ABSTRACT:
A cross-connect for interfacing high-speed ports and having add/drop multiplexing capabilities for permitting simultaneous access to all individual subscribers may be improved by utilizing a switch block arrangement for allowing downstream subscribers to be switched among each other without the need to be switched upstream through the cross-connect or may alternatively be improved by substituting an expansion shelf in place of a line shelf so as to permit the addition of additional line shelves and hence, additional subscribers. This latter improvement is made possible by assuming that not all subscribers will need access to the cross-connect at the same time. A switch block for such arrangements can output either an input data signal previously stored in a switch memory or a daisy-chain input that is output from another switch block in the arrangement.
REFERENCES:
patent: 5014268 (1991-05-01), Tyrrell et al.
patent: 5046067 (1991-09-01), Kimbrough
patent: 5060229 (1991-10-01), Tyrrell et al.
patent: 5161152 (1992-11-01), Czerwiec et al.
patent: 5189673 (1993-02-01), Burton et al.
patent: 5191456 (1993-03-01), Sutherland et al.
patent: 5301050 (1994-04-01), Czerwiec et al.
Alcatel Network Systems, Inc.
Jung Min
Olms Douglas W.
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