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Geoff, It's an ad hoc of the IEEE P802.3ba Task Force. I am copying the maintenance reflector because this ad hoc arises from comment 52 of http://ieee802.org/3/axay/comments/D2.0/802.3ay_D2p0.pdf (on page 17) and the associated presentation http://ieee802.org/3/axay/public/jan_08/dawe_1_0108.pdf . The January maintenance meeting decided to refer the subject to P802.3ba because there is suitable fiber optics expertise (and interest, as it turns out) there to progress the issue. Piers > -----Original Message----- > From: Geoff Thompson [mailto:gthompso@xxxxxxxxxx] > Sent: 21 June 2008 16:24 > To: DAWE,PIERS > Cc: STDS-802-3-MAINT@xxxxxxxxxxxxxxxxx; david_law@xxxxxxxx > Subject: Re: [802.3_MAINT] Phone meeting of the "Statistical > Eye Ad Hoc" 9 am PT on Monday 30 June > > Piers- > > As closely as I can tell from the documentation you have > presented below, > this is not a 802.3 Maintenance meeting. It is a pure 802.3 > ad hoc not associated with any Task Force. > > For it to be a Maintenance meeting there would have to be an > action item > from a regular Maint. meeting and have an 802.3 Maintenance > Item upon which to base that action item. > > Geoff > > > At 09:03 AM 6/19/2008 , DAWE,PIERS wrote: > >There will be a phone meeting of this ad hoc at 9 am PT on > Monday 30 June > >for not more than an hour. The purpose will be to note any > developments > >in this field, document what we want to get accomplished, > and make plans > >for which SDOs or MSAs should address which issues to what > timescales - > >and in particular, what we want done in P802.3ba. > > > >Meeting Passcode: 404749 > >US phone number: +1 877 205 1729 or +1 719 867 0498 > >UK +44 (0) 20 7082 0221 > >Tokyo +813 4455 1485 > >Other country phone numbers are available: please email if > you want one. > >Press *6 to mute or "un-mute" line. > > > >Any meeting materials will be made available from > >http://ieee802.org/3/ba/public/AdHoc/index.html > > > >If you are planning to participate to the teleconference > please take a > >moment to read the IEEE patent policy before the > >meeting: http://standards.ieee.org/board/pat/pat-slideset.ppt. > > > >There are several overlapping interests: > >1 802.3, maintenance of original 802.3ae > > Sort out definition of eye measurements in the existing 10G > > Ethernet (except LRM which is sorted) > >2 SFP+ > > Provide spec points and any collateral e.g. > measurement methodology > > Choose suitable levels of statistical > significance for > > eyes at transmitter and receiver > >3 P802.3ba > > Provide measurement methodology and suitable levels of > > statistical significance for any new eye specs in P802.3ba > > Pay particular attention to test time for > multi-lane PMDs (AUI > > counts as a PMD, as it connects PMAs) > > Consider to what extent eye measurements could be > eliminated or > > method modified if beneficial > > There are separate considerations for electrical > interconnect > > (XFI, 10GBASE-KR and derivatives) and optical. However, the two > > communities may be able to share ideas beneficially. > >4 Other? > > > >As I see it, item 1 is not driven by a timeline but remains > important, > >item 2 is expected make its choices in the next two months > or so, item 3 > >is not yet the focus of P802.3ba. It would be good to relate what > >know-how will be available from SFP+ and when to the needs > of items 1 and > >3, and plan for what P802.3ba will need and when. > > > >Our charter in P802.3ba is defined by Straw Poll #1 from the > March 08 Minutes: > > > >"Straw Poll #1: Regarding dawe_01_0308.pdf, the following > should be done: > >A. IEEE P802.3ba takes this work on as part of the project. > >B. The work should be done, but not as part of the IEEE > P802.3ba project. > >C. Nothing should be done. > >D. Further evaluation is necessary. > >Results: > >A. 23 > >B. 21 > >C. 0 > >D. 38 > >Choice D wins. A "Statistical Eye Ad Hoc" will be formed and > Chaired by > >Piers Dawe to further evaluate findings presented in > dawe_01_0308.pdf, and > >come back with a recommendation to the Task Force on how to handle." > > > >That's what the phone meeting is for - to progress our > recommendation for > >a work plan, to put before P802.3ba at its July meeting. It is NOT > >intended to do actual engineering or scientific work on this call. > > > >Piers > > > >-----Original Message----- > >From: DAWE,PIERS [mailto:piers.dawe@xxxxxxxxxxxxx] > >Sent: Tuesday, April 01, 2008 12:38 PM > >To: STDS-802-3-HSSG@xxxxxxxxxxxxxxxxx > >Subject: [802.3BA] Invitation to join the "Statistical Eye Ad Hoc" > > > >All, > > > >At the March meeting of P802.3ba it was decided to set up a > "Statistical > >Eye Ad Hoc". Its purpose is to recommend improvement and > clarification > >to the (optical) transmit eye specification of IEEE Std 802.3 52.9.7, > >and to make recommendations for any similar measurements in P802.3ba. > >It is hoped to reduce the burden in product cost and heat of > the present > >spec, reduce test cost (time), remove ambiguity and improve test > >reproducibility. Interoperability and existing networks will not be > >affected. See http://ieee802.org/3/ba/public/mar08/dawe_01_0308.pdf . >An extract from the (unapproved) minutes of the March meeting is below. > >I intend to start by collecting a list of those interested and a >building a list of what has been done and needs to be done to move this >topic forward. > >As this is a specialist subject I intend to communicate with those who >sign up, not the whole reflector. So please sign up if you are >interested! > >Thank you, > >Piers > >Presentation #37 >Title - Eye mask statistical significance and practicality >By - Piers Dawe, Avago Technologies >See - dawe_01_0308.pdf >Discussion >* Definitions of the abbreviations used in the presentation were added >at the end of the presentation. The Chair will upload the updated >presentation to the website. >* Clarifying questions were asked and answered. > >Straw Poll #1: Regarding dawe_01_0308.pdf, the following should be done: > A. IEEE P802.3ba takes this work on as part of the project. > B. The work should be done, but not as part of the IEEE P802.3ba >project. > C. Nothing should be done. > D. Further evaluation is necessary. >Results: > A. 23 > B. 21 > C. 0 > D. 38 >Choice D wins. A "Statistical Eye Ad Hoc" will be formed and Chaired by >Piers Dawe to further evaluate findings presented in dawe_01_0308.pdf, >and come back with a recommendation to the Task Force on how to handle.