Re: Nigeria's High-Speed Cable -- A Well-Kept Secret? (fwd)

[S Woodside <sbwoodside at yahoo.com>]

IIRC, it is currently something like 20 Gbps, up to 120 Gbps capacity 
is possible.

"This network consists of a core backbone with various diversions 
radiating out to other countries. The system is designed to support 
four wavelengths at 2.5Gbit/s, connecting all the concerned countries 
in the Western coast of Africa (refer to map) and five wavelengths at 
10Gbit/s between Portugal and South Africa. The first connection 
responds to regional telecom needs for both voice and data while the 
second one implements a high speed link between Europe and Africa. It 
highlights the advantages of submarine networks regarding flexibility, 
the rapid turnaround time of the implementation of the project and the 
ability to provide a large, upgradable bandwidth. Furthermore, it can 
play the role of restoration for other submarine systems around Africa, 
thanks to the various interconnections between them. "
     http://nww.alcatel.at/at/presse/archiv/newsarchiv2002/content/01823/

So what's the PHY, the MAC, would someone who is knowledgeable about 
these things explain how it works?

simon

On Friday, July 4, 2003, at 03:37  PM, Brian Candler wrote:

> (I don't know what the capacity of SAT-3 is; someone mentioned "5.8 
> million
> calls simultaneously" which translates to about 350Gbps, but that seems
> rather on the high side to me)
>

--
www.simonwoodside.com -- 99% Devil, 1% Angel


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