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Re: [10GBT] Updates to web site

I'll have an update to the Category 6 cabling adhoc channel models that
reflect the Clause 55 link segment specification by Monday (June 21).
On a related thread:
Sanjay Kasturia has requested and posted additional cabling channel models.

 I've agreed to support Sanjay's efforts by providing him the "raw measurement data" collected by the cabling Adhoc.  

Just wanted to make a clear distinction between Sanjay's  efforts and the need to update

the cabling adhoc models as related to the reflector e-mail's.


In regard to Sanjay's efforts we should consider allocating time at the plenary either in the TF or

the cabling adhoc to  generate a list of objectives and requirements for additional channel models.

I had sent out a note to the reflector (5/12/2004) to stimulate that discussion (attached below).




Chris DiMinico

Chair: 10GBASE-T Cabling Ad-hoc



Sanjay Kasturia had posted a request for additional cabling channel models in an e-mail sent to the 10GBASE-T reflector

4/10/2004 (attached below). I had responded to Sanjay that the TF cabling Adhoc had contributed a set of worst case

models to the TF modeling Adhoc group and requested that Sanjay be more specific on the need for and types

of additional models required


I’d like to continue this thread in order solicit input from the TF on the need for additional cabling models in order

to coordinate and focus the cabling adhoc on the deliverables. The TF established a baseline cabling specification

supported by the current set of models. What are the requirements and objectives for additional cabling models?


We need to focus on the development of the standard and generate a list of objectives and requirements for

additional channel models that apply to that effort. Towards that end, what are we lacking in channel models??





Chris DiMinico

Chair: 10GBASE-T Cabling Ad-hoc



In a message dated 4/10/2004 1:19:36 PM Eastern Standard Time, SKasturia@TERANETICS.COM writes:

We have four channel models defined from the March 2004 plenary meeting.
For detailed phy performance simulations, we will need sample channel data that complies with these models.
We will greatly appreciate it if any task force participants can provide full matrix (4x4) channel data. This would ideally include:
a) Insertion loss data on each of four pairs - real and imaginary
b) Near end crosstalk coupling (6 unique pair-combinations) - real and imaginary
c) Far end crosstalk coupling (6 unique pair-combinations) - real and imaginary
d) Four unique echo transfer functions (one for each pair) - real and imaginary
This can be obtained by measurements on actual cable and then scaling to meet the specified channel models.
Any cable companies volunteering to provide this data?
There is some data from the cabling Ad-hoc available on:
This data has some of the items listed above but not all. It does, however, provide enough to get some sense of performance.
Sanjay Kasturia
cell (650) 704-7686
office (408) 653-2235
In a message dated 6/17/2004 10:30:30 AM Eastern Standard Time, bradley.booth@INTEL.COM writes:
I'll remove them.  Just curious if you plan to provide an update?
-----Original Message-----
From: stds-802-3-10gbt@IEEE.ORG [mailto:stds-802-3-10gbt@IEEE.ORG] On Behalf Of Chris DiMinico
Sent: Thursday, June 17, 2004 8:00 AM
Subject: Re: [10GBT] Updates to web site

The channel models recently posted as related to kasturia_2_0304.pdf scaled to the
limit attributed to the cabling ad hoc are of "raw measurement data" taken from the cabling
ad hoc measurement data set.
I had provided the "raw measurement data" to Sanjay at his request
for 4x4 measurement data. There is a deviation in the insertion loss of pair one insertion loss
measurements that exceeds the channel limits at ~570 MHz (columns labeled P1R-P1I) .
Please remove the models as mislabeled.
Chris DiMinico
MC Communications
In a message dated 6/16/2004 11:33:24 PM Eastern Standard Time, bradley.booth@INTEL.COM writes:


A new web page has been added for P802.3an channel models, and it can be found at the following URL:

The May 2004 Interim web page has also been updated, and its URL is:

I'd also like to remind everyone that the deadline for submission of presentations is only 3 weeks away.  If you're planning to make a presentation, please send me an email ( to request presentation time.

And on a final note, the deadline for the hotel room block is this Friday, June 18th, and the deadline for the $300 registration fee is Friday, June 25th (6:00 pm PDT).  Registration after that time will be $350.


Brad Booth
Chair, IEEE P802.3an Task Force