How to solve the conflict – PSE side
Effects on PSE specifications
–PoEp PSE minimum voltage is 51V.
–However PSE's that have a 44V minimum output and are 802.3at-
complaint in any other aspect, are anyway able to power 802.3at- complaint PD's with classes of Part (a). (Hence all OK so far..)
–Supplies power only if capable of (Like we do today in IEEE802.3af)
–802.3af PSE classification including class 4 should be mandatory (In order to PSE to know if to power or not)
To differentiate between 802.3af PD and PoEp PD.
–802.3at PSE extended classification is optional.
Like classification is currently optional in 802.3af
www.PowerDsine.com | PowerDsine Presentation | October 2005 | Page 20 |
