Patent
Hybrid switching system for a communication node
Jean Calvignac,Eric Saint Georges,Daniel Orsatti,Gilles Toubol,Fabrice Jean Verplanken,Francois Nicolas +5 more
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TLDR
In this paper, the authors present a hybrid packet and circuit switching system for TDM buses, which allows merging of packet-and circuit traffic from user interface modules on a TDM bus and transfer of packet information from one module to another module or exchange circuit information between modules.Abstract:
The hybrid packet and circuit switching system allows merging of packet and circuit traffic from user interface modules on a TDM bus and transfer of packet information from one module to another module or the exchange circuit information between modules. Circuit exchanges or packet transfers are performed synchronously on the TDM busses in bursts of period T, with each burst comprising a fixed number of bytes. The bursts are switched by switch 1. A routing indication common to the packet and circuit bursts is used for controlling the switching of the bursts by the switch 1. The indication is performed by piggy backing the target module address for the circuit bursts, as well as for the packet burst, with the data bursts. Marking tables needed for the circuit burst allocation are located in the user interface modules.read more
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References
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Patent
Apparatus for switching information between channels for synchronous information traffic and asynchronous data packets
TL;DR: In this article, the last minipacket per frame period is identified by a special end tag, and then a token access mechanism starts enabling selective PS data packet transfer between FIFO input and output buffers.
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High-speed switching system with flexible protocol capability
A. Varma,Christos John Georgiou +1 more
TL;DR: In this article, the authors proposed a crosspoint switching system consisting of a plurality of switching planes for transferring data therethrough, and the switching planes are comprised of two types, data planes (32) used only for transfer data between processors and at least one control/data plane (34) capable of transferring data and controlling crosspoints in the other data planes.
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Multiplex interface for a communication controller
TL;DR: In this paper, a multiplex interface for interconnecting the line scanning means (1) of a communication controller to user lines via transmit and receive synchronous multiplex links.
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Time division switching system for circuit mode and packet mode lines
TL;DR: In this article, the first lines are connected to subscriber equipments, each of which convoys both multiplexed channels which have a rate equal to that of the other lines, and the second and third lines connect to outside switching networks while the fourth lines connect with a packet switching network.
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High speed communication processing system
TL;DR: In this paper, a communications node for handling circuit and packet switching and capable of expansion to include multiple switching matrices, multiple network processors and multiple packet processors is described, where each switch matrix has multipile I/O ports and communications with user interfaces, network interfaces and other system components via bidirectional data links.