On Thu, 12 Apr 2007 12:11:45 -0500, Dennis Ferguson
<dcferguson@pacbell.net> wrote in
<slrnf1sq2h.81.dcferguson@akit-ferguson.com>:

>On 2007-04-11, John Navas <spamfilter1@navasgroup.com> wrote:

>> RE-ADSL2 and ADSL2+/RE-ADSL2+ are capable of much longer distances than
>> standard ADSL, a range increase of roughly 50%. ("RE" is short for
>> "Reach Extended.) ADSL2 and ADSL2+ are also capable of much higher
>> speeds, up to 12 mbps and up to 24 mbps respectively. The questions are
>> if and when AT&T will deploy them.
>
>I know RE-ADSL2 (Annex L) is ADSL2 with the upper frequency dropped from
>1104 kHz to 552 kHz, and I know ADSL2+ (Annex M) is ADSL2 with the upper
>frequency increased from 1104 kHz to 2208 kHz, but I can't figure out
>what the heck RE-ADSL2+ might be. ADSL2+ is normally considered to
>be a higher speed (up to 24 Mbps) but more range-limited service because
>higher frequencies are attenuated more strongly with distance (which is why
>Reach-Extended ADSL2 does this by squeezing its signal into a smaller
>bandwidth).

See <http://en.wikipedia.org/wiki/ADSL#_note-adsl-annex-l>

>Also, I've not seen anyone claim more than about a 3000 foot increase
>in reach for RE-ADSL2 over ADSL at the same speed. This might come close
>to a 50% increase in coverage area, but not in range.

See <http://www.internode.on.net/adsl2/graph/>

--
Best regards, FAQ FOR CINGULAR WIRELESS:
John Navas <http://en.wikibooks.org/wiki/Cingular_Wireless_FAQ>