Function
This command is used to add an xDSL DPBO profile. This profile is used to
configure the associated parameters of the DPBO in an xDSL line, such as the
DPBO electrical length at the CO end, PSD mask, feature parameter vectors of
cables at the CO end, minimum valid PSD, minimum frequency, and maximum
frequency. When the existing xDSL DPBO profile cannot meet the requirements of
line activation, run this command to add a new xDSL DPBO profile. After the xDSL
DPBO profile is configured successfully, the port that uses this profile takes
effect when the profile is activated.
Parameters
| Parameter | Description | Value |
|---|---|---|
| profile-index |
Indicates the ID of an xDSL DPBO profile. When creating an xDSL DPBO profile,
you can specify the profile ID. If you do not specify it, the system
automatically allocates the smallest idle ID to the xDSL DPBO profile. The system supports a maximum of xDSL DPBO profile:
Numeral type. Range:
|
Numeral type. Range: 2-4294967294. |
Usage Guidelines
- In the global config mode, run the interface vdsl command to enter VDSL mode or run the interface adsl command to enter ADSL mode.
- Currently, the system has a default xDSL DPBO profile (profile 1). Parameters in the default profile are for reference only. You can create new profiles according to actual line conditions.
- This profile is used to configure the xDSL line DPBO parameters. It is used to reduce the transmit power as much as possible to reduce the downstream crosstalk caused by adjacent lines under the prerequisite of ensuring the SNR margin of the downstream channel at the receive end.
Example
Assume that:
- Electrical length at the CO end: 500
- Minimum electrical length: 400
- Other parameters: default values
huawei(config)#xdsl dpbo-profile add
<cr>|profile-index<U><2,4294967294> }:
Command:
xdsl dpbo-profile add
Start adding profile
Press 'Q' to quit the current configuration and new configuration will be
neglected
> Do you want to set the description of the profile? (y/n) [n]:
> DPBO working mode enabling:
> 1-ADSL, 2-ADSL2+, 3-VDSL2
> Current enabled DPBO working mode:
> 1-ADSL 2-ADSL2+ 3-VDSL2
> Please select 1-Delete 2-Save and quit [2]:
> DPBO E-side electrical length (0~511 0.5dB) [0]:500
> DPBO minimum E-side electrical length (0~500 0.5dB) [0]:400
> Will you set PSD mask? (y/n)[n]:y
> DPBO assumed exchange PSD mask, the format :
> Tone index(0~6956):PSD value(0~190 -0.5dBm/Hz)
> The bandwidth of each tone is 4.3125KHz
> You cannot set more than 16 couples :
> DPBO E-side cable model scalars, the scalar value from -1 (coded as 0)
to 1.5 (coded as 640) in steps of 1/256:
> Scalar A(0~640) [256]:
> Scalar B(0~640) [512]:
> Scalar C(0~640) [256]:
> DPBO minimum usable signal (0~255 -0.5dBm/Hz) [180]:
> DPBO span minimum frequency (0~2048 4.3125KHz) [0]:
> DPBO span maximum frequency (32~6956 4.3125KHz) [511]:
> DPBO DeltaFEXT factor: 1-disable, 2-enable (1~2) [1]:
Add profile 4 successfully
System Response
- The system displays the message "Add profile x successfully" after the xDSL DPBO profile is added successfully. "x" is the ID of the new xDSL DPBO profile.
- The following table describes the parameters in response to the
xdsl dpbo-profile add command.
Parameter Description description of the profile Indicates the description of an xDSL DPBO profile. DPBO working mode enabling Indicates the DPBO working mode. The supported DPBO working modes are as follows:By default, all the three modes are supported.- 1-ADSL
- 2-ADSL2+
- 3-VDSL2
DPBO E-side electrical length Indicates the electrical length at the CO end. It ranges from 0 to 511 and its actual range is 0 dB to 255.5 dB. If this parameter is set to 0, it indicates that the DPBO function is disabled and other DPBO parameters cannot be configured. DPBO minimum E-side electrical length Indicates the minimum DPBO electrical length. It ranges from 0 to 511 and cannot be greater than the electrical length at the CO end configured for the user. The actual range is 0 dB to 255.5 dB. psd mask The PSD mask is constructed by up to 16 breakpoints. It is the original PSD mask that is sent from the VDSL port at the CO. DPBO E-side cable model scalars Indicates feature parameter vectors of the cable at the CO end.- Scalar A: Indicates feature parameter vector A of the cable at the CO end.
- Scalar B: Indicates feature parameter vector B of the cable at the CO end.
- Scalar C: Indicates feature parameter vector C of the cable at the CO end.
DPBO minimum usable signal Indicates the minimum DPBO available signal PSD. It ranges from 0 to 255 in the unit of -0.5 dBm/Hz. The actual range is from 0 dBm/Hz to -127.5 dBm/Hz. DPBO span minimum frequency Indicates the DPBO minimum frequency. It ranges from 0 to 2048 in the unit of 4.3125 kHz. The actual range is 0 kHz to 8832 kHz. DPBO span maximum frequency Indicates the DPBO maximum frequency. It ranges from 32 to 6956 in the unit of 4.3125 kHz. The actual range is 138 kHz to 29997.75 kHz. DPBO DeltaFEXT factor Indicates the state of the DPBODeltaFEXT factor. It ranges from 1 to 2, 1: disable, 2: enable. Default value: 1. - For more information about the error message that the system displays against a command entered with incorrect syntax.
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