20 ppm clock tolerance for WIS
For the benefit of those who could not make it to your presentation in
Ottawa, could you clarify some of the issues that you raise.
You mention that the "cost difference between +/-20ppm and +/-100ppm
oscillators is a tiny fraction of the total cost of a 10GigE interface".
Could you perhaps substantiate this statement with quantitative input (some
real numbers). My understanding is that the +-100ppm tolerance was
specified only to keep the cost down (as the cost differential between a
20ppm solution and 100ppm solution is perceived to be significant).
You recommend using "LAN PHY jitter specs". This makes the WIS
incompatible with installed base SONET . This doesn't seem to meet your
goal of being compatible with installed OC-192 SONET
infrastructure. Please clarify.