Abstract: A client receive circuit receives client data from a network, decodes the client data and stores the client data within the memory. A frame transmit circuit is provided that includes a justification control logic and a framer and a justification control logic is provided that 1) determines each of a plurality of fill levels and 2) determines an average of the plurality of fill levels. The framer has circuitry to generate a wrapper including a justification opportunity having data based upon a difference between the average and a predetermined threshold.

Abstract: A mapping system including a memory, a client receive circuit and a frame transmit circuit. The client receive circuit is adapted to receive client data from a network, decode the client data and store the client data within the memory. The frame transmit circuit includes a justification control log and a framer. The justification control logic is executed by one or more processor to 1) determine each of a plurality of fill levels, each of the plurality of fill levels being associated with an amount of client data in the memory at each of a plurality of corresponding one of a plurality of instants of time, and 2) determine an average of the plurality of fill levels. The framer has circuitry to generate a wrapper including at least a portion of client data from the memory, the wrapper having one or more justification opportunity having data based upon a difference between the average and a predetermined threshold. The mapping system can be an asynchronous mapping system.