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Telecommunications Nokia Siemens boosts VDSL2 with bonding
Telecommunications Nokia Siemens boosts VDSL2 with bonding | Nokia Siemens boosts VDSL2 with bonding |
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| by Stuart Corner | |
| Wednesday, 09 September 2009 | |
  
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"Restricted reach has put limits on the business opportunity of VDSL2. By doubling the reach with minimum complexity in terms of upgrading, our technology demonstration shows carriers a potential to extend their VDSL2 offering to millions of new customers," said Eduard Scheiterer, head of broadband access at Nokia Siemens Networks. VDSL2 cannot at present be used in Australia over Telstra copper, much to the chagrin of ISP EFTel whch has made much of its plans to launch VDSL2 services from its DSLAMs. However the gains claimed by Nokia Siemens seem marginal. According to distance v bandwidth chart for ADSL2+ on the web site of ISP Internode , (and based on information from telecoms consultancy Consultel) ADSL2+ can deliver 20Mbps at 1.5km. Certainly as an Internode customer more than 1km as the crow flies from the local exchange we regularly get in excess of 20Mbps. And according to Wikipedia, VDLS2, unbonded, has no advantage over ADSL2+ at 1.6kms. "VDSL2 deteriorates quickly from a theoretical maximum of 250 Mbps at 'source' to 100Mbps at 0.5km and 50Mbps at 1km but degrades at a much slower rate from there...Starting from 1.6km its performance is equal to ADSL2+.
This article first appeared in ExchangeDaily, iTWire's daily newsletter for telecommunications professionals. Register here for your free trial.
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