[AusNOG] Water in Fibre cables

[Matthew Moyle-Croft]

They're not very big but when you're reusing Telstra's duct network then it
constrains the design.  Imagine one of the fibre cabinets where each of the
current pillars is.  That also gives you most flexible and efficient use of
the fibre.



On 09/03/2012, at 13:12, XiTatiON <xitation at gmail.com> wrote:

 Ah yeh that would make more sense :)

The splitters themselves aren't very deep though, could potentially fit
inside lots of things.  Weatherproofing and bend radius are things that
need to be considered though.

On 9/03/2012 12:17 PM, Matthew Moyle-Croft wrote:


 On 09/03/2012, at 11:42 AM, XiTatiON wrote:

  Yup where required new cabinets will be installed...

I believe the plan is to also retro fit into existing spots where possible,
unless this has changed.


 You maybe thinking of the underground plant:

 An example of an NBN pit (not reused Telstra one mind you in this photo):

 http://1mmc.com/pub/nbn-pit.jpg

 Top of the pit has the ruggised connector box (preterminated cable into
the house) and an example of a fibre joint.   No splicing for last bit into
your house - just premade leads.  Just like FiOS - same Corning solution.

 You can see water and mud has gotten into the pit but hasn't affected
anything as expected.

 MMC



On 9/03/2012 12:09 PM, Matthew Moyle-Croft wrote:


 On 09/03/2012, at 11:33 AM, XiTatiON wrote:


http://blogs.cisco.com/wp-content/uploads/NBN-fibre-serving-area-550x388.jpg
(sorry not the best picture ever... couldn't find a better one though.)

So basically what happens is a single fiber runs from the OLT to a passive
splitter that you will find in some of the old Telstra poles and pits
around the place.  A single fiber is used for TX and RX using different
wavelengths.


 Splitters are in roadside cabinets.  See this photo for an example:

 http://1mmc.com/pub/nbn-roadside-cab.jpg

 Top of the cabinet are the splitters - fibre connectors on the back panel
are towards the customers.

 Moving customers around and connecting them is dead easy, just need a
fibre cleaner.   You can see how easy it is to reposition customers between
splitters if one runs out of bandwidth or you move to a new technology.

 MMC

 _______________________________________________
AusNOG mailing list
AusNOG at lists.ausnog.net
http://lists.ausnog.net/mailman/listinfo/ausnog


 _______________________________________________
AusNOG mailing list
AusNOG at lists.ausnog.net
http://lists.ausnog.net/mailman/listinfo/ausnog
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ausnog.net/pipermail/ausnog/attachments/20120309/01f832c8/attachment.html>