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Billion 800VGT Router
Advanced Options
ADSL
Parameters
help
to
interpret
your
ADSL
line
statistics.
SNR
Margin:
This
is
known
as
Signal
to
Noise
Ration
Margin.
It
is
the
ratio
between
DSL
strength
and
signal
noise.
This
margin
is
measured
in
decibels
(dB).
Higher
the
dB
figures
better
the
DSL
strength
is
relative
to
the
noise,
and
better
chance
to
get
faster
speed.
THE
HIGHER
THE
BETTER
Line
Attenuation:
This
measures
the
signal
loss
in
decibel
(dB)
between
the
DSLAM
and
the
router.
The
lower
the
attenuation
dB
figures,
the
better
the
DSL
strength/speed.
THE
LOWER
THE
BETTER.
CRC
Errors:
It
is
known
as
Cyclic
Redundancy
Check
Error.
It
is
the
use
of
checksums
to
detect
transmission
errors.
Latency:
This
includes
two
channels,
Fast
and
Interleaved.
It
displays
the
channel
adopted
by
your
ISP.
Capability:
There
are
more
combinational
ADSL
modulation
modes
to
be
selected.
GDMT:
ADSL
connection
will
be
limited
to
ADSL1
(G.DMT
/
G.Lite)
only.
BIS+:
ADSL
connection
will
be
limited
to
ADSL2+
only.
(If
you
are
ADSL1
subscriber
DO
NOT
select
this
option).
BIS+/T1413:
ADSL
connection
will
be
limited
to
ADSL2+
and
ADSL1
T1.413
only.
BIS+/BIS:
ADSL
connection
will
be
limited
to
ADSL2+
and
ADSL2
only.
BIS+/BIS/GDMT/T1413:
ADSL
connection
will
be
limited
to
ADSL2+,
ADSL2
and
ADSL1
G.DMT
&
G.Lite
&
T1.413.
BIS+/BIS/T1413:
ADSL
connection
will
be
limited
to
ADSL2+,
ADSL2
and
T1.413.
BIS+/BIS/GDMT:
ADSL
connection
will
be
limited
to
ADSL2+,
ADSL2
and
ADS1
(G.DMT/G.Lite)
only.
DISABLE:
This
disable
function
will
disconnect
your
ADSL
synch.
Use
it
with
caution.
S=1/2
Mode:
This
is
a
ADSL1
protocol
that
can
increase
the
downstream
speed
up
to
12Mpb.
Please
check
further
with
your
ISP
if
this
option
can
be
enabled
or
not.
51
Chapter
4:
Configuration