Muni fiber: L1 or L2?

Mon Feb 4 22:58:22 UTC 2013

Scott Helms wrote:

>> Bot of you are wrong.
>>
>> There is no reason fiber is more expensive than copper, which means SS
>> is cheap, as cheap as copper.

> Copper isn't cheap, its just there already.

Unbundled copper costs about $10/M or so, which means SS fiber
can't be more expensive.

> What is SS?

Single star.

> No, most of the cost isn't in running the cabling.  Today most of the cost
> is in lighting the fiber, though that varies on where you're running the
> cabling and what gear you're using to light it.

On page 11 of google slide,

http://static.googleusercontent.com/external_content/untrusted_dlcp/research.google.com/en/us/pubs/archive/36936.pdf

it is stated that "Trenching consists of 70-80% of the total cost
for infrastructure build".

> PON is preferred by carriers because it works in their existing equipment

Their existing equipment was SS copper and MDF.

> Planning for a carrier network
> is very different (different requirements) than for a greenfield muni
> system.

Surely, transition from copper to fiber is not trivial, but it
helps a lot that fiber cables are thinner than copper cables.

						Masataka Ohta