On Tue, 25 Jul 2000, Jeff Duchin wrote:

> Quick question... is there a major difference (besides the connectors)
> between SC and ST MMF? Does one perform better than the other? Also, what's
> the difference between Duplex and Simplex and Riser/Plenum? I know what
> Plenum is used for as far as fire safety in the ceiling/walls. Any help
> would be cool.

Just the connectors.  In an emergency, one can shove a round peg into
a square hole.  (ST will friction-fit into most SC fittings and work.)

No significant performance difference.

In terms of the physical medium, duplex is two fibers with a figure-8 
jacket.  Looks a lot like lamp cord.  Convenient because the transmit and 
receive fibers are physically tied together into a common jacket.  Simplex
is a single fiber.  

Riser/Plenum has the outer protective jacket made of a material that does
not produce toxic fumes (or produces less such fumes) when it burns.  The
glass fiber itself doesn't burn, but the outer jacket is plastic. 

-- 
Jay Hennigan  -  Network Administration  -  [EMAIL PROTECTED] 
NetLojix Communications, Inc.  NASDAQ: NETX  -  http://www.netlojix.com/
WestNet:  Connecting you to the planet.  805 884-6323 

___________________________________
UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
FAQ, list archives, and subscription info: http://www.groupstudy.com
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
  • Fiber Jeff Duchin
    • Jay Hennigan

Reply via email to