Re: [LINK] Anticipated service life of fibre

2016-04-10 Thread David Boxall
On 10/04/2016 2:40 PM, Tom Worthington wrote: On 10/04/16 13:25, David Boxall wrote: ... Sadly, that link no longer works. ... I found the document in the Internet Archive: ... https://web.archive.org/web/20110403102958/http://www.aph.gov.au/hansard/senate/commttee/S13299.pdf#page=134 ...

Re: [LINK] Anticipated service life of fibre

2016-04-05 Thread Karl Auer
On Tue, 2016-04-05 at 22:10 +1000, Paul Brooks wrote: > this 'old glass flows/deforms and gets thicker at the > bottom' is an urban myth that has been debunked. The glass doesn't > flow, the thickness gradient is a byproduct of the pouring process, > and panes have been found that were installed

Re: [LINK] Anticipated service life of fibre

2016-04-05 Thread Paul Brooks
On 5/04/2016 10:45 AM, Karl Auer wrote: > Even glass is touched by time. Perhaps it will become slowly more opaque, > carry > certain wavelengths better (or less well), become more fragile, or deform (as > old > windows have flowed down so they are fatter at the bottom). Given the

Re: [LINK] Anticipated service life of fibre

2016-04-04 Thread Andy Farkas
On 05/04/2016 10:52, Scott Howard wrote: Do you have any references to fiber cabling having a lifespan of "vastly longer than a century"? Most cable manufacturers give a stated lifetime of somewhere in the 20-40 years, with a general industry expectation that it will normally last more than

Re: [LINK] Anticipated service life of fibre (was: Does NBN need a third satellite?)

2016-04-04 Thread Scott Howard
On Mon, Apr 4, 2016 at 4:53 PM, Andy Farkas wrote: > David, you've mentioned this "anticipated service life" a few times now. > > None of us can see into the future, but what would replace something > that can go at the (constant) speed of light? The life of a fibre cable >

Re: [LINK] Anticipated service life of fibre (was: Does NBN need a third satellite?)

2016-04-04 Thread Karl Auer
On Tue, 2016-04-05 at 09:53 +1000, Andy Farkas wrote: > None of us can see into the future, but what would replace something > that can go at the (constant) speed of light? The life of a fibre > cable is vastly longer than a century. They will probably only have > to replace broken/crushed

Re: [LINK] Anticipated service life of fibre

2016-04-04 Thread Marghanita da Cruz
Hi Andy, It is a risk - I have seen the cables being pulled from buildings which are to be demolished. In the 1980s, the catchcry was to future proof buildings with optic fibre. I wonder how much of fibre pulled out of buildings has never been used. The question is whether you run a fibre

[LINK] Anticipated service life of fibre (was: Does NBN need a third satellite?)

2016-04-04 Thread Andy Farkas
On 05/04/2016 08:59, David Boxall wrote: How far it can go in the century-or-so anticipated service life, it's our duty to find out. David, you've mentioned this "anticipated service life" a few times now. None of us can see into the future, but what would replace something that can go at the