Was it a fiber cut or just copper?
On Fri, Dec 27, 2013 at 5:26 PM, Jim Nichols <jhnichols@xxxxxxxxxxxxx> wrote:
> I watched some of the repairs today, and have a new appreciation for
> what these guys have to deal with.
>
> Jim Nichols
> Tullahoma, TN USA
>
> On 12/27/2013 11:52 AM, Ken Norton wrote:
>>> Squirrels obviously like a high fibre diet !
>> Mice in a telecommunications facility are a disaster. They'll eat
>> through fiber-optic cables and jumpers like crazy. The old telephone
>> wires used to be lead-sheathed. Lots of squirrels and mice died from
>> lead poisoning. The older stuff even had arsenic in it. But mostly,
>> they will chew on stuff that has metal sheaths or pull wire in it as
>> well as paper wrappings. We're slowly migrating to a newer style of
>> "riser cable" (fiber) that has no metal or paper in it at all. The
>> mice generally leave that alone as there is no reason for them to chew
>> on it. I would say that out of the 350 facilities I am involved in, we
>> experience a rodent problem maybe 10 times a gear. The "outside plant"
>> guys have to deal with it all the time and we probably have an outage
>> somewhere around the country three or four times a day. Of course,
>> further south, we have the snakes that make our field equipment home.
>> Fortunately, they do keep the mice away and don't chew on the wires.
>> But they are brutal on power supplies when they short out a -48vdc
>> main buss.
>>
>> Fortunately, vermin within a facility aren't huge problems, but we
>> spend a fortune on extermination efforts. It doesn't take long for us
>> to find them as mice will start chewing the day they arrive. Unless
>> they are chewing on an old cable that hasn't been mined out of the
>> facility, the moment they sever something in use, we know pretty much
>> immediately.
>>
>> FTTH (Fiber to the home) has got another set of issues when it comes
>> to critters. There are very good reasons why the industry is slow to
>> replace copper.
>>
>>
>
>
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Ken Norton
ken@xxxxxxxxxxx
http://www.zone-10.com
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