ZyXEL Communications IES-1248-71, Руководство пользователя

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Chapter 55 ADSL Commands
IES-1248-71/73 User’s Guide
376
Use this command to display or set Power ManageMent (PMM) parameters for the specified
ADSL port(s).
The following example sets ADSL port 5 to use the following PMM settings.
• Stay in the L0 power mode for 180 seconds before a change to the L2 power mode is
permitted.
• Once in L2 power mode, wait for 90 seconds before further reducing the transmission
power.
• Each L2 power mode power reduction can only be 2 dB or less.
• The total power reduction allowed in the L2 power mode is 40 dB.
55.1.17 Impulse Noise Protection Command
Syntax:
ras> adsl inp <portlist> [<usINP> [,<dsINP>] ]
where
<max_l2rate> =
Set the maximum transfer rate (in Kilobits per second) that is
permitted while the port is in the L2 power mode. The supported
range is 32~4096 Kbps in 4 Kbps increments. If you enter a
number that is not a multiple of 4, the system uses the next
lower multiple of 4. If you enter 39 for example, the system will
use 36. Set this to 0 to have the system automatically assign a
value.
<min_l2rate> =
Set the minimum transfer rate (in Kilobits per second) that is
permitted while the port is in the L2 power mode. The supported
range is 32~4096 Kbps in 4 Kbps increments. If you enter a
number that is not a multiple of 4, the system uses the next
lower multiple of 4. If you enter 39 for example, the system will
use 36. Set this to 0 to have the system automatically assign a
value.
<l0tol2_rate> =
Set the down stream transfer rate (in Kilobits per second) that
serves as the threshold for whether the port is to use the L0 or
the L2 power mode. The system changes from L0 mode to L2
mode when the downstream transfer rate stays below this
threshold for
L0 Time . The system changes back from L2 mode
to L0 mode when the downstream transfer rate goes above this
threshold. This rate must be less than or equal to one half of the
Min L2 Rate and at least 16 Kbps. Set this to 0 to have the
system automatically assign a value.
Figure 244 PMM Parameters Command Example
ras> adsl pmm param 5 180 90 2 40
<usINP> =
Sets the minimum upstream (us) impulse noise protection setting. Use
0~3 to define a number of DMT symbols. 0 = 0 DMT symbols, 1 = 0.5
DMT symbols, 2 = 1 DMT symbols, 3 = 2 DMT symbols.