3.2.2 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 IDL-2402 provides a profile-based provisioning 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 IDL-2402 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.

- 49 -