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Labor's NBN a $60bn Fiasco exposed by a Technical Expert Thursday 19/08/2010

LABOR'S NBN EXPOSED? ANOTHER $60 BILLION WASTED? I am a network architect for one of Australia 's largest Telco's - so I speak with some authority on this issue. Here are the technical reasons this will fail :

1) Fibre optic cable has a maximum theoretical lifespan of 25 years when installed in conduit. Over time, the glass actually degrades (long story), and eventually it can’t do it`s bouncing of light thing anymore. But when you install fibre outside on overhead wiring (as will be done for much of Australia 's houses, except newer suburbs with underground wiring), then the fibre degrades much quicker due to wind, temperature variation and solar/cosmic radiation. The glass in this case will last no more than 15years. So after 15 years, you will have to replace it. Whereas the copper network will last for many decades to come. Fibre is not the best technology for the last mile. That`s why no other country has done this.

2) You cannot give every house 100Mbps. If you give several million households 100Mbps bandwidth, then you have exceeded the entire bandwidth of the wh*** internet. In reality, there is a thing called contention. Today, every ADSL service with 20Mbps has a contention ratio of around 20:1 (or more for some carriers). That means, you share that 20Mbps with 20 other people. It`s a long story why, but there will NEVER be the case of people getting 100Mbps of actual bandwidth. Not for several decades at current carrier equipment rates of evolution. The "Core" cannot and will not be able to handle that sort of bandwidth. The 100Mbps or 1Gbps is only the speed from your house to the exchange. From there to the Internet, you will get the same speeds you get now. The "Core" of Australia 's network is already fibre (many times over). And even so, we still have high contention ratios. Providing fibre to the home just means those contention ratios group. You will not get better download speeds.

3) New DSL technologies will emerge. 15 years ago we had 56k dial-up. Then12 years ago we got 256k ADSL, then 8 years ago 1.5Mbps ADSL2, then 5 years ago 20Mbps ADSL2+. There are already new DSL technologies being experimented on that will deliver over 50Mbps on the same copper we have now. $zero cost to the tax payer

4) 4G wireless is being standardised now. The current 3G wireless was developed for voice and not for data, and even so it can deliver up to 21Mbps in Australia . There are problems with it, but remember that it was developed for voice. The 4G standard is specifically being developed for data, and will deliver 100Mbps bandwidth with much higher reliability (yes, the same contention issues apply mentioned earlier). $zero cost to the taxpayer

5) The "NBN" will be one of the largest single networks ever built on earth. There are only a few companies who could do it - Japan 's Nippon NTT, BT,AT&T;, Deutsche Telekom etc. Even Telstra would struggle to built something on this scale. Yet we are led to believe that the same people who can’t build school halls or install insulation without being ripped off are going to do it ??? Here at Telstra, we are laughing our heads off !! Because when it all comes crumbling down, after they have spent $60+billion and the network is no more than 1/2 complete, it will be up to Telstra to pick up the pieces ! (Shhhh! don't tell anyone, it`s our secret)