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Software Configuration Overview 35
Model 3124 User Manual 3 • Configuration
ADSL Configuration
Configuration for an ADSLx user port is provisioned by the parameter set, which is a group of attributes that
determine the user port behaviors; and we call it as a profile. The Model 3124 provides a profile-based provi
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sioning per the definition of ITUT G997.1 and RFC 2662 for ADSL line configuration data and a mechanism
to associate the ADSL port to these profiles. One or more ADSL lines may be configured to share parameters
of a single profile.
The ADSL profiles of Model 3124 include:
• Service Profile
The parameters include Rate adaptive mode selection, Min/max/planned bit rate, Interleaving Max delay,
and Minimum impulse noise protection.
• Spectrum Profile
The parameters include the Power management setting, Min/max/target noise margin, allowed ADSL
modes of operation, Carrier mask, RFI band data, Maximum nominal aggregate transmit power, Maximum
PSD level, PSD shape (for ADSL2+), Power back off initiation, and Maximum aggregate receive power.
• TCA Profile
The parameters include ESs, SESs, UASs for interval and day PM, and LOS, LOF, LOPWR, LOL, Error
Frame for interval PM only.
The system provides up to 120 Service profiles and Spectrum profiles respectively, and provides up to 16 TCA
profiles. One of the profiles is a fix default that cannot be modified; users are allowed to create, and edit the
other profiles. Each profile contains a parameter set for downstream and upstream direction respectively. Users
can also observe the actual values of these parameters through CLI, Web-GUI, or EMS.
The ADSL configuration also includes the function for user to query the line status, the physical layer status,
and the channel interface status for ATU-C and ATU-R. The status information includes the attenuation rate,
actual net data rate, the line attenuation, SNR margin, transmission power, actual interleaving delay, channel
characteristics per subcarrier, quiet line noise PSD, …etc.
Performance Management
Performance management supports performance monitoring by collecting and thresholding performance
parameter counters against 15-miniute intervals for each interface and module respectively. Users can query the
data of these parameters through CLI, Web-GUI, or EMS.
Performance statistics include the following:
1. Statistics for current interval:
A real-time aspect contains the reflection of the current value situation before the new interval. The cur-
rent value includes values of current 15-min interval and current 1-day interval.
2. Statistics history at 15-minute basis:
The system stores previous 96 statistics of PM parameters at 15-min interval for retrieving.
3. Statistics history at 1-day basis:
The system stores previous 1 statistics of PM parameters at 1-day interval for retrieving.
Most of the performance parameter thresholds are user-programmable. The Model 3124 uses a threshold
crossing alert (TCA) to notify the management system when one of the counts during a measurement interval
exceeds its threshold.