dark fiber and sfp distance limitations

William Herrin herrin-nanog at dirtside.com
Sat Jan 2 01:10:59 UTC 2010

On Fri, Jan 1, 2010 at 7:24 PM, ML <ml at kenweb.org> wrote:
> Pardon my ignorance in this area but is too much to ask for OTDR data before
> signing contracts?  In addition to data on the make of the fiber if you
> wanted to do xWDM in the future.

Yes, it's too much to ask. They won't splice your path until you sign
the contracts and you can't get useful OTDR and loss readings until
the fiber is spliced.

You can probably put an escape clause in the contract that lets you
exit with little or no cost if the readings aren't good enough after
the fact. If you're not time-constrained, you can probably request a
pre-check for a modest fee after main splicing but before trenching to
your endpoints.

Bill Herrin

William D. Herrin ................ herrin at dirtside.com  bill at herrin.us
3005 Crane Dr. ...................... Web: <http://bill.herrin.us/>
Falls Church, VA 22042-3004

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