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RE: [10GBASE-T] Proposed modification to PAR scope

In reading the requested change it states that the PHY is to operate "on horizontal structured copper cabling". This says that it is to operate on all the horizontal cabling within a building or campus as per the definition of structured (generic) cabling in ISO or TIA. I thought somewhere we had targeted this to the data center ?
-----Original Message-----
From: []
Sent: Wednesday, September 24, 2003 3:04 PM
Subject: RE: [10GBASE-T] Proposed modification to PAR scope

I support the change. The current scope is too wide open with respect to the type of PHY being defined. Almost anything, e.g. a 100 MHz PHY for coaxial cable, would fit within "to add a copper Physical Layer (PHY) specification." Tweaking the text to make the intended direction more clear is very appropriate. If there is a specific point in Howard's suggestion that you feel is too limiting, then suggest an alternative.
-----Original Message-----
From: Bruce Tolley []
Sent: Wednesday, September 24, 2003 9:57 AM
To: Booth, Bradley;
Subject: Re: [10GBASE-T] Proposed modification to PAR scope


I do not support this change. I think the PAR and objectives already make it perfectly clear that we are only defining a PHY.


At 08:58 AM 9/24/2003 -0700, Booth, Bradley wrote:


Howard Frazier has proposed the following modification to the scope of the 10GBASE-T PAR to help narrow the focus and prevent the interpretation that the Study Group is planning to make modifications to the MAC, and to make sure the Study Group is focused on the horizontal structured copper cabling environment:

   Specify a Physical Layer (PHY) for operation at 10 Gb/s
   on horizontal structured copper cabling, using the existing
   Media Access Controller, and with extensions to the appropriate
   physical layer management parameters, of IEEE Std 802.3.

Is there any feedback on this proposed modification?

Brad Booth

Chair, 10GBASE-T Study Group

Bruce Tolley
Senior Manager, Emerging Technologies
Gigabit Systems Business Unit
Cisco Systems
170 West Tasman Drive
San Jose, CA 95134-1706
ip phone: 408-526-4534

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