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Re: [EFM] Cable plant question


It has been my experience that the service providers dictate the type of 
connector/termination that they want in the field.  This is primarily 
driven by the issue of purchasing bulk quantities of particular patch 
panels, fiber termination "pig tails", and fiber patch cords.  The types of 
connectors used for termination range from PC/FC to MU and all the range of 
possible connectors in between. Depending on where you are in the world, 
there may be a greater number of one type of connector than others, but 
this changes in different parts of the world.

You be the judge.

Thank you,
Roy Bynum

At 11:38 PM 2/24/2002 -0800, Vipul Bhatt wrote:

>This is a question aimed at service providers and those who believe
>they understand the implementation practices of service providers.
>Based on a couple of recent email threads on the P2P reflector, I
>think it would be due diligence if I expose this topic on the main
>EFM reflector. Let's keep it at a top level here. Also, the question
>relates to P2P links only, not P2MP links.
>Suppose the Optical PMD group came to you and asked: We are
>examining the merits and demerits of a particular type of PMD. It
>requires that the cable plant return loss be high, say, more than 21
>dB. It means the fiber at both ends of the link will be have to be
>terminated with APC connectors. In addition, you will have to
>guarantee that ALL fiber joints, end to end, in your EFM cable plant
>will have to be either splices or APC-to-APC connector joints. This
>goes for any patch panels (fiber distribution boxes) you may have,
>either at the CO end, or at the subscriber end. If they have been in
>place before you deploy EFM links, you will have to search and
>replace all PC/UPC connectors with APC.
>Without entering the PMD debate (which is best done on the P2P
>reflector), please tell me: do you find such a cable plant
>proposition undesirable or acceptable? Very expensive or marginally
>more expensive?
>I recognize that the final decision on a PMD would depend on many
>other factors, like the cost comparison of PMD options and its
>system level implications. With all those caveats in place, I am
>asking your opinion exclusively on the cable plant question.
>Thank you in advance.