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ADSL1 vs ADSL2

joyjohn
joyjohn asked
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Last Modified: 2008-01-09
What is the difference in ADSL1 and ADSL2 in terms of speed, modem and technologies.
What is the speed of wireless tech like 802.11a, 802.11b and g and thier compatibility
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Lee W, MVPTechnology and Business Process Advisor
CERTIFIED EXPERT
Most Valuable Expert 2013

Commented:
Never heard of those.  I suspect they are vendor specific terms - which vendor are you looking at?

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Commented:
they say ADSL2 runs upto 24mbps
Lee W, MVPTechnology and Business Process Advisor
CERTIFIED EXPERT
Most Valuable Expert 2013

Commented:
I'll ask again:
which vendor are you looking at
ADSL2 (ITU G.922.3 and G.922.4) are new ADSL standards that enchance existing adsl standards and utlize newer technologies.  ADSL2 can run up to 12MB/s (regular adsl is 8) and can give another 600 feet in distance from the local exchange.  2+ goes even further, bringing the total speed to 25MB/s and has about a 1.5 KM range from the local exchange.

They basically are able to enhance speed and distance by changing the algorithms that are used to interperet frequencies (how the data is transmitted over the phone line).  2+ also has the ability to multiplex lines, which means you can combine phone lines and get another 25MB/s each line you add.

Hope this helps...
Lee W, MVPTechnology and Business Process Advisor
CERTIFIED EXPERT
Most Valuable Expert 2013

Commented:
tristancomputes - can you provide links to companies selling it or news articles discussing it?
ADSL2 & 2+ is the next phase of offerings from most ISP's.  This means, however, that who is offering it in your area is completely dependant on where you live.  Here's some articles discussing it:

http://news.bbc.co.uk/2/hi/technology/3900367.stm

http://en.wikipedia.org/wiki/ITU_G.992.5

http://www.adslguide.org.uk/newsarchive.asp?item=1760

http://www.internode.on.net/adsl2/

Hope this helps.

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