ZyXEL Communications MSC1024G Series User Manual page 824

Chapter 33 show Commands
Table 328 show Commands (continued)
COMMAND
vdsl2
824
linehlog <slot-port>
lineqln <slot-port>
linetssi <slot-port>
band <slot-port>
bitalloc <slot-port>
chan <slot-port>
hlog <slot-port>
line <slot-port>
medleypsd <slot-port>
qln <slot-port>
snr <slot-port>
DESCRIPTION
Displays VDSL line channel
characteristics. The format provides
magnitude values in a logarithmic
scale.
This command displays the Quiet Line
Noise level on a line. This is the rms
(root mean square) level of the noise
present on the line for a DMT tone
when no ADSL or VDSL signals are
present. It is measured in dBm/Hz.
The QLN can be used in analyzing
crosstalk.
Displays the VDSL line's TSSI
parameters.
Displays the status of upstream bands
0, 1, 2, 3, 4 (U0, U1, U2, U3, U4) and
downstream bands 1, 2, 3, 4 (D1, D2,
D3, D4) for the VDSL line connected to
the specified port.
Displays the number of bits allocated
to each tone for the VDSL line
(connected to the specified port).
The more bits allocated, the higher the
data transmission rate.
Displays VDSL statistics for a specified
port since the port's link last came up.
Displays the Hlog parameter for the
VDSL line (connected to the specified
port).
Hlog is one parameter of the Channel
Transfer Function in mathematics. The
Hlog can be used to see a line's
capability against interference and
attenuation.
Displays the status of the VDSL line
connected to the specified port.
Displays the final PSD the system
proposes to the connected CPE during
line initialization for the VDSL line
connected to the specified port.
Displays the QLN (Quiet Line Noise)
parameter for the VDSL line
(connected to the specified port). This
is to see the line's noise level.
The Quiet Line Noise for a DMT tone is
the rms (root mean square) level of the
noise present on the line, when no
ADSL signals are present. It is
measured in dBm/Hz. The QLN can be
used in analyzing crosstalk.
Displays the SNR (Signal to Noise
Ratio) parameter for the VDSL line
(connected to the specified port). This
is to see the line's signal strength.
MSC1000G/1024G/1224G Series User's Guide
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