FRITZ!WLAN Repeater N/G
40
Glossary
Glossary
ADSL
abbreviation for Asymmetric Digital Subscriber Line
designates a fast kind of file transfer that works with stan-
dard copper cables and transports signals in both direc-
tions at different speeds (upstream at 640 Kbit/s and
downstream at up to 9 Mbit/s).
ADSL2
abbreviation for Asymmetric Digital Subscriber Line 2
ADSL2 (G.992.3) is a further development of the ADSL
norm G.992.1/G.992.2).
ADSL2 offers range much greater than did the first ADSL
generation, and is significantly more robust than ADSL, as
it can simply disable single carrier frequencies when they
produce interference. This feature allows ADSL2 to pre-
vent synchronization losses.
With a throughput rate of up to 12 Mbit/s downstream,
ADSL2 offers considerably greater bandwidth than ADSL.
ADSL2 is completely downward compatible, meaning that
terminal equipment compliant with ADSL can also be op-
erated on ADSL2 lines, although they cannot exploit the
advantages of ADSL2.
ADSL2+
abbreviation for extended bandwidth Asymmetric Digital
Subscriber Line 2
ADSL2+ (G.992.5) is a further development of the ADSL
norm (G.992.1/ G.992.2).
ADSL2+ offers a doubled frequency range used for down-
stream transmission, and thus double the maximum
bandwidth achievable for downstream to 24 Mbit/s.
ADSL2+ is completely downward compatible, meaning
that terminal equipment compliant with ADSL and ADSL2
can also be operated on ADSL2+ lines, although they can-
not exploit the advantages of ADSL2+.
