User guide

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Configuration Guide for Cisco DSLAMs with NI-2
OL-2074-03
Chapter 4 Configuring Digital Subscriber Lines
Setting DSL Profile Parameters
Defaults
The default decibel values for PSDM rates are as follows:
• –40 dB downstream
• –38 dB upstream
Examples
In this example, the command sets the CAP PSDM value at –37 dB downstream and –41 dB upstream
for the “issis” profile.
DSLAM# configure terminal
DSLAM(config)# dsl-profile issis
DSLAM(cfg-dsl-profile)# cap psdm downstream -37 upstream -41
DSLAM(cfg-dsl-profile)# end
In this example, the command sets the CAP PSDM value to the default downstream and upstream
settings of –40 dB and –38 dB for the “issis” profile.
DSLAM# configure terminal
DSLAM(config)# dsl-profile issis
DSLAM(cfg-dsl-profile)# no cap psdm downstream -40 upstream -38
DSLAM(cfg-dsl-profile)# end
Setting the Power Spectral Density Mask for SHTU-C
This section describes how to set the SHTU-C power spectral density mask (PSDM).
To set the SHTU-C PSDM, follow these steps:
Example
The following example shows you how to configure a symmetric mask type:
DSLAM(config)# dsl-profile austin
DSLAM(cfg-dsl-prof)# shdsl masktype symmetric
Step 3
DSLAM(cfg-dsl-profile)# cap psdm
downstream psdm upstream psdm
Set the PSDM rate downstream and upstream for this profile.
Step 4
DSLAM(cfg-dsl-profile)# end
Exit from profile configuration mode.
Command Task
Command Task
Step 1
DSLAM# configure terminal
Go to global configuration mode.
Step 2
DSLAM(config)# dsl-profile profile-name
Go to profile configuration mode, specifying the
profile-name for which you want to set the PSDM value.
Step 3
DSLAM(cfg-dsl-profile)# shdsl masktype
symmetric
Set the DSL mask type as symmetric.
Note In future software releases, asymmetric masks will
be supported for certain bit rates.
Step 4
DSLAM(cfg-dsl-profile)# end
Exit from profile configuration mode.