AT&T doubles up on DSL speed

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DSL at nearly 2GB/s already working: DSL at nearly 2GB/s is already working over phone wires in experimental sites in Europe.

With the commercial DSL speed now more than doubling each year (and a new DSL technology being experienced and marketed every 6 to 8 months), and with today's 20MB/s offered in many places, mid-2009 seems a reasonable estimate for availability of the first commercial offers around 100MB/s: it just means multipling the commercial speed by 5 in 3 years.

This willbe possible because lots of optical fiber loopsare being built now not only inmetropolitan areas, but also to interconnect all the regionalandlocalpoints of presence upto the last kilometer, and also because wireless networks are also expanding and filling the gaps in low density areas.

Very urbanised countries like Belgium and Luxembourg are nearly completely wired today with much enough fibers to support the increase of performance. The key factor for the development of Internet speed is the convergence of technologies (and the already programmed death of analogic broadcast networks, that arebeing migrated using MPEG technologies, transported through broadcast and jointly through DSL wires).

The capacity of the final coper wire loop is also much less used now that a significant part of the phone service has been converted to wireless mobile networks.

The cost for maintaining the quality of the final loop is also decreasing since the longest part of it is eliminated and optical fibers are often replacing coper wires for future larger total bandwidth in less expansive cables, which are also thiner are easier to protect from the environmental electric fields and less repeaters and less energy needed to make them actively working. The cost of new fibers is also now less expensive than isolated copper wires (copper is expensive and is a precious natural resource). And in metropolitan areas, fast wireless technologies have also decreased the pressure on existing fiber loop infrastructures,whose topology is easier to optimize for lower costs.

The only challenging technology, still underused is the capacity of electric wires which are still not deployed asthey should be, notably for high speed interregional links, when they can avoid the construction of long distance fibers. These electric networkscanalso support optical fibers as well along the same transport cables.

Let's not forget the many cables that are nearly always added at the same time as the construction or maintenance of existing infrastructures (motorways and national roads,railways, gas and water supply networks, pipelines, urban metros, tunnels and bridges, traffic signalisation...); Posted by: PhilippeV Posted on: 12/13/05 You are currently: a Guest | Members login | Terms of Use