R0106-HP MSR Router Series Interface Command Reference(V7)

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Examples
# Configure the 16-PAM constellation for interface ATM 1/0.
<Sysname> system-view
[Sysname] interface atm 1/0
[Sysname-ATM1/0] shdsl pam 16
Related commands
shdsl capability
shdsl pbo
Use shdsl pbo to tune the transmission power.
Use undo shdsl pbo to restore the default.
Syntax
shdsl pbo { value | auto }
undo shdsl pbo
Default
A G.SHDSL interface automatically tunes its transmission power.
Views
ATM SHDSL_8WIRE_BIS interface view
Predefined user roles
network-admin
Parameters
auto: Automatically tunes the transmission power.
value: Specifies a power backoff (PBO) value (in dB) to restrict the transmission power. The value range
is 0 to 31.
Usage guidelines
A G.SHDSL interface automatically tunes its transmission power according to the line noise to ensure an
appropriate signal-to-noise ratio. When the line noise is known or the automatically-tuned value is
inaccurate, use this command to manually tune the transmission power.
Examples
# Tune the transmission power of G.SHDSL interface ATM 1/0 to 20 dB.
<Sysname> system-view
[Sysname] interface atm 1/0
[Sysname-ATM1/0] shdsl pbo 20
shdsl psd
Use shdsl psd to set the PSD for a G.SHDSL interface.
Use undo shdsl psd to restore the default.
Syntax
shdsl psd { asymmetry | symmetry }