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[802.3af] FW: [10GBASE-T] Power over the MDI...


10GBASE-T is beginning to formulate objectives, and is trying to decide if
compatibility with 802.3af should be one of them. I am forwarding this
request from Brad Booth, Study Group Chair of 10GBASE-T, for your

It would be of great value to 802.3 for 10GBASE-T to be 802.3af compatible.
Therefore, I would propose that our TF do a short presentation to the
10GBASE-T SG at the March Plenary. This presentation should contain a quick
overview of DTE power, a discussion of signal-pair power (with emphasis on
the magnetics and power supply noise parameters), and a summary. It should
be short and concise, and will hopefully serve as an executive summary of
the possible compatibility issues.

Please let me know if you would like to work on this presentation.

See you at DFW,


Steven B. Carlson
Co-Chair, ESTA Control Protocols Working Group
Chair, ESTA ACN Task Group
Chair, IEEE 802.3af DTE Power via MDI Task Force
Secretary, IEEE 802.3 CSMA/CD Working Group
High Speed Design, Inc.
11929 NW Old Quarry Road
Portland, OR 97229
FAX 503.626.4206

-----Original Message-----
From: owner-stds-802-3-10gbt@xxxxxxxxxxxxxxxxxx
[mailto:owner-stds-802-3-10gbt@xxxxxxxxxxxxxxxxxx]On Behalf Of Booth,
Sent: Tuesday, February 18, 2003 8:28 PM
To: stds-802-3-10gbt@xxxxxxxx
Subject: [10GBASE-T] Power over the MDI...

Study group members,

As some of you may know, 802.3af is starting to wind down and getting closer
to completion.  For those that do not know what 802.3af is, it is the
specification for transmitting power to the DTE over the medium.  The study
group needs to decide whether or not compliance with 802.3af is within the
scope of our effort.  This relates to compatibility with our existing
standards.  If there is anyone that would like to make presentations for or
against compliance with 802.3af, please let me know.

Thank you,

Chair, 10GBASE-T Study Group