How are the guys sent out on cross-country skis going to get up to the fiber to repair it? I'm sure that the cable isn't low enough for them to reach it without a ladder, bucket truck, helicopter.... all of which you don't pack in on skis...
-Kevin On Tue, Sep 21, 2010 at 12:02 PM, Seth Mattinen <se...@rollernet.us> wrote: > On 9/21/2010 10:52, Holmes,David A wrote: > > Modern telephone pole aerial fiber uses all dialectric self-supporting > > (ADSS) technology, where the self-supporting component consists > > primarily of aramid yarn, the same material used for bullet-proof vests. > > This makes for an extremely light weight, almost indestructible fiber > > bundle. My guess is that ADSS fiber would deflect any bullets, or it > > would take a very good marksman using a very high caliber weapon to > > actually sever an aerial fiber. > > > > Now in the case described below where optical ground wire (OPGW) fiber > > is used as a component in the ground wire running at the top of high > > voltage transmission towers, it may be possible to hit the insulators at > > the top of the towers, but the ground wire itself is usually armored, > > with ADSS inside. Seems far-fetched to me. > > > > > Back in my ISP days it was more common for people to take pot shots at > remote equipment cabinets than the cable/fiber itself. Any field > enclosure is as easy a target as your average bullet-ridden road sign. > Although this was extremely rare; I can only recall one instance where > it was the direct cause of an outage. > > ~Seth > >