[c-nsp] 15km optics

[Marcus.Gerdon]

Ray,

best check the transmission power and sensibility of the SFP (just look it up at Cisco's site) against the attenuation of the fibers (both directions).

Longest link I had working were 14.6 km according OTDR with a LX GBIC and up to 12 km occur quite some time, so there's the possibility this will still work with LH-SM. Of course nearly fully utilizing the power budget raises the risk of fiber caused connection outage as a bend in a patch can become the .5 dB to much attenuation.

Attenuated ZX is the saver one, so maybe converting 1310 to 1550 in the CO might be an option.


regards,

Marcus


> -----Ursprüngliche Nachricht-----
> Von: cisco-nsp-bounces at puck.nether.net 
> [mailto:cisco-nsp-bounces at puck.nether.net] Im Auftrag von Ray 
> Burkholder
> Gesendet: Freitag, 13. März 2009 16:48
> An: 'cisco-nsp'
> Betreff: [c-nsp] 15km optics
> 
> I have a carrier which has about 13km to 15km of fibre to 
> their CO.  They
> run 1310 nm alcatel equipment on their end.  I was wanting to 
> use a Cisco
> GLC-LH-SM on my end but that is rated for 10km.  The 
> GLC-ZX-SM is 1550 nm
> 70km device which is incompatible.  
> 
> Does anyone have suggestions on how to complete this link?  
> inexpensive
> optical regenerator?  small intermediate alcaltel box?   a 
> cisco SFP running
> 1310 nm and has longer range?
> 
> Ray
> 
> 
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