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RESEND ...Dave David W. Martin From: Martin, David
(CAR:Q840) During the discussion on Reach Objectives there didn’t
appear to be any mention of corresponding BER. Recall the comments from the floor during the July meeting
CFI, regarding how 10GigE has been used more as infrastructure rather than as
typical end user NICs. And that the application expectation for 100GigE would
be similar. Based on that view, I’d suggest a BER design target of
(at least) 1E-15. That has been the defacto expectation from most carriers
since the introduction of OC-192 systems. The need for strong FEC (e.g., G.709 RS), lighter FEC (e.g.,
BCH-3), or none at all would then depend on various factors, like the optical
technology chosen for each of the target link lengths. ...Dave David
W. Martin |