Cisco HFR

Peter Lothberg roll at Stupi.SE
Wed May 26 03:51:41 UTC 2004

> Interestingly the OC-768 card has a max transmit power of 5dB and is 
> short-range optics only.  

The 300-pin-MSA for OC768 has a SR spec of TX 0..+3dBm, RX min -5dBm. 
Dispersion is max 40ps/nm. 

> As far as I know there are no 2R or 3R 
> regeneration solutions for long haul 40Gb/s circuits, nor are there any 
> DWDM systems that can do 8, 16 or 32 40Gb/s wavelengths.

Incorrect. There are transponders that put a 40G signal in a 10G DWDM
optical system. (You have to move a step up from morse code to make the 
side-bands fit..) And they atleast run in 80 chanel systems.


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