[LINK] 500-Mbits/s over copper

Tom Koltai tomk at unwired.com.au
Thu Mar 19 11:23:57 AEDT 2009



> -----Original Message-----
> From: link-bounces at mailman1.anu.edu.au 
> [mailto:link-bounces at mailman1.anu.edu.au] On Behalf Of 
> stephen at melbpc.org.au
> Sent: Wednesday, 18 March 2009 9:51 PM
> To: link at anu.edu.au
> Subject: [LINK] 500-Mbits/s over copper
> 
> 
> Ericsson Demonstrates 500-Mbit/s DSL
> 
> 03.17.09 by PCMag.com Staff  
> www.pcmag.com/article2/0,2817,2343307,00.asp
> 
> 
> Ericsson said 
> this week that it has demonstrated 500-Mbits/s transmission 
> rates over copper cabling, using VDSL2-based modems. 
> 
> The demonstration used line bonding of six copper lines, 
> similar to the 
> line bonding used by the old 1288-Kbit "Shotgun" modems in 
> the mid-1990s. 
> 
<snip>

The problem for Australia is that each Residence has two pairs only, and
the average home is further than 500 metres from the exchange.

This would require that the local loop be divested from Telstra for
VDSL-2 to be allowed to proliferate successfully.

There are four ISP's utilising this technology in Australia, however
only one so far has offered phone combined (EFTEL) - which would be
necessary to take advantage of the pair bonding Ericsson implementation.

The result at 12-15mhz would be between 10 and 20 mbits per subscriber
(using bonded pairs = 4 copper wires) at no more than 1.5 kilometres
from the exchange. Therefore the NBN cabinet rollout would be an
imperitive if we want the majority of Australians to have over 50 mbit
to the home.

Tom


_______________________________________
No viruses found in this outgoing message
Scanned by iolo AntiVirus 1.5.6.4
http://www.iolo.com




More information about the Link mailing list