Patent ID: 8498199
Filing Date: 2013-07-30
Classification: H04J,H04L

Abstract:
1. A network node configured for use in a packet-switched network including a Time-Division Multiplexing (TDM) pseudowire, the network node comprising: a receiver configured to receive at least one packet transmitted over the TDM pseudowire using a structure-agnostic transmission mechanism, wherein a data payload of the at least one packet comprises a framing bit and a TDM data payload; a physical interface configured to output frames to a corresponding customer edge (CE) device; a non-transitory storage medium configured to store a TDM framing type corresponding to the physical interface; and a circuit emulation processor that during periods of normal operation, is configured to transmit frames corresponding to the data payload of the at least one packet to the CE device over the physical interface, and, during periods in which a network error has occurred, is configured to transmit a plurality of frames, wherein each frame includes a framing bit, to the CE device over the physical interface, wherein a TDM data payload of each frame includes an idle pattern, a group of framing bits of the plurality of frames defines a framing pattern corresponding to the TDM framing type stored for the physical interface, and a predefined framing type is used for the physical interface when the network error has occurred.