3com MSR 20-20 참조 매뉴얼
138
C
HAPTER
5: G.SHDSL I
NTERFACE
C
ONFIGURATION
C
OMMANDS
Example
# Set the operating mode of interface ATM 5/0 to CO.
<Sysname> system-view
[Sysname] interface atm 5/0
[Sysname-Atm5/0] shdsl mode co
shdsl psd
Syntax
shdsl psd { asymmetry | symmetry }
undo shdsl psd
View
ATM (G.SHDSL) interface view
Parameter
asymmetry: Specifies the asymmetric mode, where different power spectral
densities (PSD) are set for the central office (CO) and the customer premises
equipment (CPE).
densities (PSD) are set for the central office (CO) and the customer premises
equipment (CPE).
symmetry: Specifies the symmetric mode, where the same PSD is set for the CO
and CPE.
and CPE.
n
Power spectral density (PSD) is the amount of power per unit (density) of
frequency (spectral) as a function of the frequency. PSD describes how the power
of a time series is distributed with frequency.
frequency (spectral) as a function of the frequency. PSD describes how the power
of a time series is distributed with frequency.
Description
Use the shdsl psd command to set PSD of the G.SHDSL interface working as CPE.
It is not necessarily the same as the one set at CO.
It is not necessarily the same as the one set at CO.
Use the undo shdsl psd command to restore the default.
By default, the PSD of the G.SHDSL interface is in symmetric mode.
Example
# Set the PSD of G.SHDSL interface ATM 5/0 to asymmetric mode.
<Sysname> system-view
[Sysname] interface atm 5/0
[Sysname-Atm5/0] shdsl psd asymmetry
shdsl rate
Syntax
shdsl rate { auto | rate }
undo shdsl rate
View
ATM (G.SHDSL) interface view
Parameter
auto: Auto-negotiation mode
rate: Maximum single-pair rate of the G.SHDSL interface, in the range of 64 to
2,312, in units of kbps.
2,312, in units of kbps.