Lucent Technologies STGR-LIM-VD-24, Manual

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Noise margin parameters The AL-DMT subprofiles
3 - 2 4 363-217-032R9.9.0
Issue 2, Mrach 2006
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Noise margin parameters
Description
The noise margin parameters are used to set the amount of noise that trigger rate adaption.
noise margin parameter defaults
The following default values configure the target noise margins on the ADSL-DMT line:
[in AL-DMT/{ any-shelf any-slot 0 }:margin-config]
target-noise-margin-up = 6
target-noise-margin-down = 6
min-noise-margin-up = 6
min-noise-margin-down = 6
max-add-noise-margin-up = 31
max-add-noise-margin-down = 31
max-margin-enabled = no
Noise margin parameter descriptions
Parameter Setting
target-noise-margin-up
Specifies the upstream noise margin, relative to 0dB,
that must be present before the line can initialize
successfully and rate adapt during normal operations.
The valid range is 0dB through 31dB, with a practical
limitation of 15dB set by the modem software.
The default is 6dB.
target-noise-margin-
down
Specifies the downstream noise margin, relative to
0dB, that must be present before the line can
initialize successfully and rate adapt during normal
operations. The valid range is 0dB through 31dB,
with a practical limitation of 15dB set by the modem
software.
The default is 6dB.
min-noise-margin-up
Not currently supported on the VDSL LIM. Any value
entered for this parameter is not currently
implemented by TAOS.
min-noise-margin-down
Not currently supported on the VDSL LIM. Any value
entered for this parameter is not currently
implemented by TAOS.