Loading patent…
AssigneeNortel Networks Limited
InventorsMalcolm Betts, Kim B. Roberts, Ronald J. Gagnon
Estimating the term…
A serial data stream is mapped through a cross-connect via two or more parallel independent shelves. The serial data stream is split into at least two sub-streams. If the lead frame of a sub-stream contains a concatenation indicator, it is replaced by a valid payload pointer, and a spilt indicator is inserted into the frame. Each of the sub-streams is then mapped through the cross-connect via a respective parallel independent shelf. Finally, the sub-streams are recombined to form an output serial data stream equivalent to the original serial data stream. If the lead frame of a sub-stream contains a split indicator, a concatenation indicator is inserted into the corresponding frame of the output serial data stream to restore the concatenation of the original serial data stream. Otherwise, a payload pointer within the lead frame is replaced by a valid payload pointer in the corresponding frame of the output data stream.
A method of mapping a data stream through a cross-connect via two or more parallel shelves of a switch core of the cross-connect, wherein each shelf has a respective independent pointer processing state machine, and the data stream comprises either one of Synchronous Optical Network (SONET) and Synchronous Digital Hierarchy (SDH) signals, the method comprising steps of:
A method as claimed in step 6, wherein the predetermined set of bits comprises SS bits of an H1 byte of the overhead of each frame.
A cross-connect adapted to map a data stream between an input port and an output port via two or more parallel shelves of a switch core of the cross-connect, each shelf having a respective independent pointer processing state machine and the data stream comprising either one of Synchronous Optical Network (SONET) and Synchronous Digital Hierarchy (SDH) signals, the cross-connect comprising;
Dependencies are inferred from the claim text.