ZyXEL Communications IES-1248-51, Руководство пользователя

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IES-1248-51 User’s Guide
Chapter 49 ADSL Commands 311
49.1.12 ADSL Downstream PSD Command
Syntax:
ras> adsl dsnompsd <portNo> [<max nominal psd>]
where
This command displays or sets the downstream maximum nominal transmit PSD (Power
Spectral Density).
The following example sets the downstream maximum nominal transmit PSD for port 7 to 10
dB.
49.1.13 ADSL Upstream Carrier Command
Syntax:
ras> adsl uscarrier <portNo> [<m0> <m1>]
where
The hexadecimal digit is converted to binary and a '1' masks (disables) the corresponding tone.
Disabling a carrier tone turns it off so the system does not send data on it.
This command displays or sets masks for upstream carrier tones from 0 to 63. Masking a
carrier tone disables the use of that tone on the specified ADSL port. Use this command to
have the system not use an ADSL line’s tones that are known to have a high noise level. The
most significant bit defines the lowest tone number in a mask.
<max nominal
psd> =
-256 ~ 255 (0.1dB)
Figure 194 ADSL Downstream PSD Command Example
ras> adsl dsnompsd 7 100
<m0>
,
<m1> =
The upstream subcarriers to be masked (disabled). Each <mx>
can use up to 8 hexadecimal digits (0~ffffffff). Each <mx>
represents 32 carrier tones (each hexadecimal digit represents 4
tones).
<m0>
= tones 0~31
<m1>
= tones 32~63
The hexadecimal digit is converted to binary and a '1' disables
the corresponding tone. Disabling a carrier tone turns it off so
the system does not send data on it.