Infinera Corporation

Mallikarjun Chillal

Prasad Paranjape

Ting-Kuang Chiang

Edward Everett Sprague

Yeongho Park

Michael D Jarchi

Arvinderpal S Wander

Michael Kutty K G

Embodiments of the present invention analyze a plurality of parallel channels and identify specific channel(s) that have skew outside of an acceptable skew error margin. In certain embodiments, this skew is identified by determining the timing misalignment between a channel under test and a deskew channel. Other channels within the plurality of channels are masked by transmitting a repeating masked bit pattern. This timing misalignment may be measured by comparing a segment within the channel under test to a corresponding segment within the deskew channel and identifying a time differential between the two segments.

Channel skew identification and notification

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.

Methods and apparatus for minimizing wander generation in constant bit rate asynchronously mapped digital transport systems

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San Jose, CA, United States of America

Mallikarjun Chillal