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公开(公告)号：EP0141852A4
公开(公告)日：1988-06-16
申请号：EP84902139
申请日：1984-05-02
申请人： CXC CORP
发明人： NELSON GARY A , GOODING PATRICK N , SCHUMAKER RICHARD E , WALTER KEITH D , MARRONE EDWARD S SOUTH BARRING , GATES STILLMAN F , RIGSBEE EVERETT O III , TEENER MICHAEL D
CPC分类号： H04L5/24 , H04L12/42 , H04L25/4904 , H04M9/025 , H04Q2213/13332
摘要： A communications switching system for transferring information between a plurality of node information highways (66, 68) and station ports (284, 286), the system (221) comprising a plurality of switches (243) each switch having a station to highway section (244) and a highway to station section (246), each section (244, 246) being in electrical communication with a station port (284, 286) and with a plurality of node information highways (272, 274). The station to highway section (244) and highway to station section (246) are each independently and dynamically configurable to communicate a selected bandwidth of information between the station ports and a selected node information highway. Each section (244, 246) further being operative to serially integrate control information into the data stream communicated to the station port, and to derive control information from the serial signal stream received from the station port. Thus, connectivity requirements between the station device and the network signal stream are simplified and greater utilization of the network signal stream is possible.
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公开(公告)号：EP0142551A4
公开(公告)日：1988-06-16
申请号：EP84902140
申请日：1984-05-02
申请人： CXC CORP
发明人： NELSON GARY A , GOODING PATRICK N , SCHUMAKER RICHARD E , WALTER KEITH D , MARRONE EDWARD S SOUTH BARRING , GATES STILLMAN F , RIGSBEE EVERETT O III , TEENER MICHAEL D
CPC分类号： H04L5/24 , H04L12/42 , H04L25/4904 , H04M9/025 , H04Q2213/13332
摘要： A communications system that improves upon the availability of communications paths between devices and simplifies the connectivity requirements to communicate data and control information to and from a remote station (11). System nodes (21) are provided which are disposed along a time multiplex network signal stream. The nodes (21) serve to interface remote stations (11) to the network signal stream (25A, 25B) and may also switch information to different stations (11) connected to the same node (21). The nodes (21) are operative to allocate a variable bandwidth of the network signal stream for data communications between devices connected to different nodes. The nodes (21) include switching devices that may be configured to accomodate stations (11) that operate at different speeds. Allocation of bandwidth may be dynamically varied such that system resources are not unneccessarily diverted. Control of bandwidth allocation and internal switching within the node is accomplished via control information communicated to and from the node. Such control information may be contained within the network signal stream and decoded by the node (21) or communicated to the node (21) via a dedicated control communications line. Control information may be encoded into the signal stream communicated between the system node (21) and the remote station (11). Thus, communication of data and control signals between the stations (11) and the system node (21) does not require complex wiring. Accordingly, individual stations (11) may be more conveniently located.
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