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RE: [EFM] Moving forward on extended temperature range optics



Yes. My thoughts are that we want the case temperature extended range 
testing spelled out in the [normative] PMD clauses and the ambient 
temperature and system issues spelled out in the annex and parts of the 
latter might well be references to other standards.


At 11:26 AM 1/17/2003 -0500, Ford, Brian wrote:
>I too will be out of the country next week. Please put me on the e-mail list
>so that I will see conference call info on this topic.
>Please pass along to the group that BellSouth strongly supports an extended
>temperature range requirement. BellSouth would like to see these numbers
>called out in the specification as normative numbers (please keep in mind
>that BellSouth and many of the other service providers think in terms of
>ambient temperature and not case temperature...however it would seem that
>these two items are strongly related).
>I will also attach the short temperature presentation that I displayed at
>the Vancouver meeting. This is the PowerPoint that we provide to all of our
>vendors when they come into the lab regarding temperature requirements (this
>is in addition to some GRs that we point to ... GR-63 CORE and GR-1089 I
>Hope this helps,
>Brian Ford
>BellSouth Telecommunications
>Science and Technology - Exploratory Development
>+1 404 332 2217
>-----Original Message-----
>From: Bruce Tolley [mailto:btolley@xxxxxxxxx]
>Sent: Thursday, January 16, 2003 2:59 PM
>Subject: [EFM] Moving forward on extended temperature range optics
>Piers and all
>I gave my self the action to help move forward the outstanding issue
>regarding extended temperature ranges for P2P and P2MP optics
>We have an objective to include in our specification of PHYs, support for
>extended temperature range optics
>The task force has in the past passed motions to specify EFM optics at -40
>to +85 C
>Network operators have on multiple occasions communicated the requirement
>for extended temperature solutions.
>As recently as the Vancouver meeting, several box vendors (including me)b
>communicated the requirement for extended temperature range optics. We need
>to agree on a path to move forward.
>So if interested parties want to forward to me their email addresses, I
>will host a conference call next week dedicated to this issue. I think we
>need to focus on a test specified in each PMD clause, to agree on the
>ranges for OLT and ONU optics, to consider the possible special case of
>bidis that include 1550 nm DFBs, and to identify any PMD that might only
>need to be supported at standard, commercial temperatures.
>Bruce Tolley
>Cisco Systems
>   At 04:11 PM 1/8/2003 +0100, piers_dawe@xxxxxxxxxxx wrote:
> >G.983.3 refers to ETS 300 019.  This is a very readable series of
> >documents from the European Telecommunications Standards Institute, giving
> >a classification of environmental conditions, e.g. weatherprotected
> >locations, non-weatherprotected, underground.  It uses four classes of
> >climatic conditions:
> >         "applies to most of Europe"
> >         extended
> >         extremely cold
> >         extremely warm dry
> >
> >And even better, up-to-date drafts are available on the web, e.g. at
> > .
> >
> >It is not the business of 802 to pick between these classes but we can
> >refer the readers of our standard to this information.
> >
> >ITU-T and ANSI T1 do not have similar documents.
> >
> >Both G.983.3 and refer to IEC 60721, classification of environmental
> >conditions.
> >
> >IEC 60721-3-4 - Ed. 2.0  Classification of environmental conditions - Part
> >3: Classification of groups of environmental parameters and their
> >severities - Section 4: Stationary use at non-weatherprotected
> >locations  1995-01 is available for CHF99 at
> > .
> >
> >Piers
>Bruce Tolley
>Senior Manager, Emerging Technologies
>Gigabit Systems Business Unit
>Cisco Systems
>170 West Tasman Drive
>San Jose, CA 95134-1706
>internet: btolley@xxxxxxxxx
>ip phone: 408-526-4534
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Bruce Tolley
Senior Manager, Emerging Technologies
Gigabit Systems Business Unit
Cisco Systems
170 West Tasman Drive
San Jose, CA 95134-1706
internet: btolley@xxxxxxxxx
ip phone: 408-526-4534