[LINK] NBN to cost 24 times South Korea's faster network, says research body

Marghanita da Cruz marghanita at ramin.com.au
Thu Feb 10 12:57:25 AEDT 2011

Stilgherrian wrote:
> On 10/02/2011, at 12:19 PM, Richard Chirgwin wrote:
>> Define "aggregate"! :-)
> Agreed. It's a bit like asking "Where does the traffic merge on the roads?"

Well that analogy isn't too bad in this case, as I did mean 
the data traffic.

> In the NBN, traffic is aggregated in the very first length of fibre, because it's a herringbone-shaped GPON back to the exchange, or possibly a node a few streets away. 

The reason I raise this is that congestion/contention only 
seems to be raised as an issue with wireless cells. There 
was extensive discussion about the capacity of cells and 
prohibiting roaming between cells.

There has to be some point at which congestion/contention 
becomes an issue on the fibre.


The example I had in mind was VoD/IPTV, Premium QoS 
Voice/Interactive Video, which is ofcourse the compelling 
killer app, as opposed to multicast cable TV.

ie where did the problem occur with the afore discussed "via 
broadband" ABC news reporter picture from Townsville. Was it 
in the digitisation of the picture, the transmission 
capacity at some point, or in the recording/decompression?

Marghanita da Cruz
Tel: 0414-869202

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