IEEE P802.3at DTE Power Enhancements Task Force
PoePlus will enhance 802.3af and work within its framework -- there
will be no new clause.
Objective 2 (Updated March
infrastructure for PoEPlus will be ISO/IEC 11801-1995 Class D or higher
systems. Further we will not cause a safety issue for a legacy
installation conformant to ISO/IEC 60950.
The target infrastructure for PoEPlus will be ISO/IEC 11801-1995 Class
D / ANSI/TIA/EIA-568.B-2 category 5 (or better) systems with a DC loop
resistance no greater than 25 Ohms.
Further we will not cause a safety
issue for a legacy installation with equipment conforming to ISO/IEC
IEEE STD 802.3 will continue to comply to the limited power source and
SELV requirements as defined in ISO/IEC 60950.
The PoE Plus PSE shall operate in modes compatible with the existing
requirements of IEEE STD 802.3af as well as enhanced modes.
Objective 5 (Withdrawn November 2008)
The enhanced standard will provide the maximum power to the PD as
allowed within practical limits.
Objective 6 (Updated March 2008)
PoEPlus shall support a minimum of 30 Watts of power at the PD PI.
PoEPlus shall support a minimum of 24 Watts of power at the PD PI.
PoEPlus PDs, which require a PoEPlus PSE, shall provide the user an
active indication when connected to a legacy 802.3af PSE. This
indication is in addition to any optional management indication that
may be provided.
The standard shall not preclude the ability to meet FCC / CISPR / EN
Class A, Class B, Performance Critera A and Performance Criteria B with
data for all supported PHYs.
Objective 9 (Updated November 2008)
Research potential extension of power classification to support PoEPlus
Extend power classification to support PoEPlus modes.
Objective 10 (Updated November 2008)
PoE Plus will vigorously pursue supporting the operation of midspan
PSEs for 1000BASE-T.
Support the operation of midspan PSEs for 1000BASE-T.
Objective 11 (Withdrawn May 2007)
Research the operations of midspan and endpoint PSEs for 10GBASE-T
including providing cable heating data for evaluation by IEEE P802.3an.
Objective 12 (Withdrawn November 2008)
That IEEE 802.3af power over the MDI isolation requirements be revisited
as part of the PoE Plus work.
PoE Plus PDs within the power range of 802.3af will work properly with
Operation based on PSE
Note 1: Operates with extended power classification
||IEEE Std 802.3af PSE
|IEEE Std 802.3af PD
|PoEP PD < 12.95W
|PoEP PD > 12.95W
||PD shall provide user active indication
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Last update: 14 November 2008