Patent ID: 7362710
Filing Date: 2008-04-22
Classification: H04L

Abstract:
1. A line card in an ATM network for linking a source to a destination, the line card comprising: a data block that is in electrical communication with a control block; the data block comprising: a memory for storing circuit state information of a plurality of circuits in said ATM network, wherein, for each circuit in said plurality of circuits, said memory stores a loopback indication; a loopback detection module for detecting an operation administration and maintenance (OAM) cell and for determining which circuit in said plurality of circuits the OAM cell is testing; and a header creation module for wrapping a header around said OAM cell, said header including all or a portion of the loopback indication of the circuit in said plurality of circuits that the OAM cell is testing, including the direction of the OAM cell.