Switching architecture with packet encapsulation

H - Electricity – 04 – L

Patent

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Details

H04L 12/66 (2006.01) H04L 12/56 (2006.01)

Patent

CA 2484751

The invention includes, among other things, a system for passing TDM traffic through a packet switch. In one embodiment, the system includes a packet switch (500) that has a plurality of data ports (510) and is capable of routing FSDU packets between the plurality of data ports (510). A TDM encapsulation circuit (512) process a TDM data flow that is incoming to the switch (500). A circuit demultiplexer processes the incoming data flow to buffer data associated with different TDM circuits into different buffer locations. A timer monitors the amount of time available to fill the FSDU, and when the time period reaches the frame boundary, an FSDU generator generates an FSDU that is filled with data associated with the TDM circuits. Header information is added for allowing the packet switch (500) to route the generated FSDU to a port (510) associated with the respective TDM circuit.

L'invention concerne, entre autres, un système permettant de faire passer un trafic TDM à travers un commutateur de paquet. Dans un mode de réalisation, le système comprend un commutateur de paquet (500) qui est doté d'une pluralité de ports de données (510) et est capable d'acheminer des paquets FSDU à travers la pluralité des ports de données (510). Un circuit d'encapsulation TDM (512) traite un flot de données TDM qui entre dans le commutateur (500). Un démultiplexeur de circuit traite le flot de données entrant vers les données tampon associées aux différents circuits TDM dans différents emplacements du tampon. Un temporisateur surveille la durée disponible pour remplir le FSDU, et lorsque la période de temps atteint la limite de trame, un générateur FSDU génère un FSDU qui est rangé avec les données associées aux circuits TDM. Des informations d'en-tête sont ajoutées afin de permettre au commutateur de paquet (500) d'acheminer le FSDU généré vers un port (510) associé aux circuits TDM respectifs.

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