On 03/12/2015 10:30, Janet Hawtin wrote: > Hi > What is the expected lifetime of the repaired copper v fibre to the > premises? >
Well, I typed in "expected lifetime of copper" into duckduckgo and got as the first hit: <http://www.nachi.org/life-expectancy.htm> "ELECTRICAL YEARS Bare Copper 100+" I then typed in "expected lifetime of fibre" and got: "Quigley's response to senate Estimates on the life of fibre ... Senator McEWEN—Just on the same issue, there are claims made that fibre technology does not have a life long enough to guarantee a return on investment. Can you make some comment about that, Mr Quigley? Mr Quigley—Yes, I have heard those. I have had the same debates with some of the media, who simply, as I said before, are not particularly interested in the facts on this issue. It astonishes me, to be honest, given that we are seeing huge increases worldwide in fibre deployments. Companies such as AT&T, Verizon and DT, all throughout Asia, are all deploying fibre. We speak to the manufacturers of fibre. They simply do not know how long the fibre will last because they can see no mechanism by which it would degrade—unlike copper, which is metal and which is carrying current. There is a natural tendency, then, to get levels of corrosion. This is glass. It is inherently stable. It is strengthened. Clearly if somebody puts a spade through it, as through a piece of copper, they will break it. But there is no inherent reason why this fibre should degrade over time. It is very, very stable. So there have been lots of reports about a 12-year life. I do not know where this data is coming from, but it certainly is not supported by the evidence we see overseas and not supported by any of the people who should know, who are the fibre manufacturers. Senator BIRMINGHAM—So you cannot put a lifespan on it at all? Mr Quigley—I could not, frankly. I cannot put a lifespan on it. Some of the copper network, by the way, has been in the ground for 50 to 60 years and is still providing service. It is getting more and more expensive to maintain. It is very difficult to put a lifespan on it. It would be at least 30 years." <http://www.aph.gov.au/hansard/senate/commttee/S13299.pdf> -andyf _______________________________________________ Link mailing list [email protected] http://mailman.anu.edu.au/mailman/listinfo/link
