When an HDSL2 based service is installed, the HDSL2 transceivers need to be configured automatically. The initialization process for an HDSL2 connection has the following phases: “Wake-up,” preactivation, core activation, and data mode. A typical startup time for HDSL2 initialization may range from 15 to 30 seconds. This section provides a brief overview of the HDSL2 initialization procedure.
The main objectives of the initialization process are to
Determine the operation settings, for example, the transmit signal power level.
Train the core transceiver block components, for example, the echo canceler, equalizer, and so on.
Exchange key system parameters, for example, channel precoder coefficients, coefficients to the rate one-half ...