On 10/31/06, flyback1 <flyback1@xxxxxxxxxxx> wrote:
Bob Miller wrote: Also what is the issue with using a plastic pipe as to transmission? Would the signal leak from such a pipe buried underground or would it stay in the pipe? John suggest that it would have to have metal in the plastic. If you have to have metalized plastic I guess that would eliminate the main attraction of gas line broadband where ever plastic is deployed since you would have to dig it up and replace it with a metalized version. Bob Miller Verizon just buried fiber down my street. FIOS will be available in several months. Fiber doesn't corrode, doesn't conduct electricity due to lightning, doesn't oxidize or otherwise deteriorate due to the elements although there is an old Phone Co. term, 'the backhoe fade' but that applies to anything buried. Given all this, who would bury a metallic cable these days for new communications distribution and why? It will only deteriorate and need replacing long before the fiber will. Have I missed out on a pivotal point in the discussion? Oh, by the way, all the gas pipes I've ever seen installed under the streets here in PA and DE are a sort of pinkinsh colored plastic, although the distribution feeder into the meter in the basement is still black iron.
Fiber can be affected by water and rats I have heard. Fiber can be cut by things other than rats and backhoes. Most companies in lower Manhattan had redundant fiber, went out of the building in more than one direction, but found on 9/11 that most of their redundant connections shared the same right of ways blocks away that were all cut by the WTC collapse. Same problem with sewer, gas, or power lines IMO. I like wireless for the last mile. You have more control, know where your connections are and can fix the problem much quicker than with fiber in many cases. Putting up that first full duplex Loea Gbps connection, one of the first Loea did anywhere, took three hours from the time the truck hit the curb at the first building. Bob Miller ---------------------------------------------------------------------- You can UNSUBSCRIBE from the OpenDTV list in two ways:- Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org
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