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Late reply...

Hi Rick

here is my vote on this,  sorry for the late reply.

1) Should we accommodate crossover cables, i.e. take either polarity of power?  (more cost in the PD)
yes_____    no__X___ 

in order to save cost, let's accept straight through cables only, Six diodes per port 
cost &  mount, that will sleep after a detection --can we justify this cost?  for we detect once in a long time

2) Should we require having a non-linear component in series with the signature resistor for discovery?
yes_____    no__X___ 
probably not necessary, we may leave this open for any gotchas- Murphy type in the future...

3) Should we pick one and only one pair at this time to send power?
yes____    no___X__ 

If yes, then pick one:    1236__X___     4578__X___ 

I think we have graduated from the pair school, and with a Phd....

4) Should we specify power for both pairs, with the second pair being optional for higher power?
yes_____    no____ 
Yes, I would say since power can come on either pair, and one day someone out there may want to
run his oven over Ethernet, why stop-em from getting the power on both pair at the same time,
and if they did, do we care... would we know - possibly  the 802.3 police might give em a ticket...

5) Should we leave open the possibility of using the second pair for power in the future?
yes_____    no_____ 

Again given that Autopolarity MAYBE out,  we save at least 8 diodes, now another resistor for 
detection and some ORING diodes can possibly give flexibility and may be something that
is good to have...

6) If we were to allow power on both pairs,
should we make discovery on each pair independent of the power on the other pair?
yes__X___    no_____ 

Yes, the 2 pairs should be independent