Switching architecture with packet encapsulation
First Claim
1. A system for passing TDM traffic through a packet switch, comprisinga packet switch having a plurality of data ports and configured to route FSDU (fixed sized data unit) packets between the plurality of data ports;
- a TDM encapsulation circuit coupled to a data flow of TDM data and having a circuit demultiplexer for processing an incoming data flow of TDM data to buffer data associated with different TDM circuits into different buffer locations, and for accessing a connection table having information representative of the plurality of data ports being supported by the packet switch including two or more data ports associated with a respective route through which an FSDU associated with a respective circuit is routed by the packet switch,a timer for monitoring a frame boundary, anda FSDU generator for generating an FSDU and filling the generated FSDU with data associated with a respective one of the TDM circuits and for generating header information representative of information for allowing the packet switch to route the generated FSDU to a respective one of said plurality of data ports, said respective port being associated with the respective one of the TDM circuits.
11 Assignments
0 Petitions
Accused Products
Abstract
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 that has a plurality of data ports and is capable of routing FSDU packets between the plurality of data ports. A TDM encapsulation circuit process a TDM data flow that is incoming to the switch. 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 to route the generated FSDU to a port associated with the respective TDM circuit.
16 Citations
19 Claims
-
1. A system for passing TDM traffic through a packet switch, comprising
a packet switch having a plurality of data ports and configured to route FSDU (fixed sized data unit) packets between the plurality of data ports; a TDM encapsulation circuit coupled to a data flow of TDM data and having a circuit demultiplexer for processing an incoming data flow of TDM data to buffer data associated with different TDM circuits into different buffer locations, and for accessing a connection table having information representative of the plurality of data ports being supported by the packet switch including two or more data ports associated with a respective route through which an FSDU associated with a respective circuit is routed by the packet switch, a timer for monitoring a frame boundary, and a FSDU generator for generating an FSDU and filling the generated FSDU with data associated with a respective one of the TDM circuits and for generating header information representative of information for allowing the packet switch to route the generated FSDU to a respective one of said plurality of data ports, said respective port being associated with the respective one of the TDM circuits. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
13. A process for passing TDM traffic through a packet switch, comprising
providing a packet switch having a plurality of data ports and configured to route FSDU packets between the plurality of data ports; -
identifying a TDM data flow, encapsulating the TDM data flow by sorting the TDM data flow into different respective buffer locations, accessing a connection table having information representative of the plurality of data ports being supported by the packet switch including two or more data ports associated with a respective route through which an FSDU packet associated with a respective circuit is routed by the packet switch, generating an FSDU that can pass through the packet switch and filling the generated FSDU with data associated with a respective one of the TDM circuits, generating header information representative of information for routing the generated FSDU to one of said plurality of data ports associated with the respective one of the TDM circuits, and combining the generated FSDU with a flow of packet data being sent to the packet switch. - View Dependent Claims (14, 15, 16, 17, 18, 19)
-
Specification