Re: it's time for another poll
1) Should we accommodate crossover cables, i.e. take either polarity of
power? (more cost in the PD)
I would prefer to accept only one polarity as it would reduce cost and
increase efficiency. But in my experience with telephony I've always
had to make telephone designs accept either polarity to accommodate
"installer freedom" in cabling. With this in mind, if the standard allows
crossover cables I would think the PD unfortunately needs to accept either
2) Should we require having a non-linear component in series with the
signature resistor for discovery?
No, if the slope technique makes this redundant, then it would only add cost.
3) Should we pick one and only one pair at this time to send power?
It would simplify the PD if we could do this, but it then would ignite the
pairs debate again. In my opinion, unless we are now convinced that mid-span
signal pair powering is viable, or that spare pair powering sufficiently
addresses marketplace needs, then I don't think we can afford to revisit
If yes, then pick one: 1236_____ 4578_____
4) Should we specify power for both pairs, with the second pair being
optional for higher power?
I would support this if I thought we could afford the time to give it proper
5) Should we leave open the possibility of using the second pair for power
in the future?
6) If we were to allow power on both pairs,
should we make discovery on each pair independent of the power on the other