Description: Bit[3:0] Identifies the cause of the last initialization failure, according to the G.997.1 recommendation.

Possible values are: 1 - Wrong profile (cannot occur in our system) 2 - Configuration not feasible 3 - Communication problem (CRC or time-out error) 4 - No ATU-R detected

Bit[7:4] If the last initialization failure is a 'Communication problem', this field identifies the type of communication problem that has occurred.

Possible values are: 0 - Timeout during initialization 1 - CRC error during initialization message 2 - Unavailable time declared during Showtime at the near-end 3 - Dynamic Rate Adaptation triggered retrain at the near-end 4 - Unavailable time declared during Showtime at the far-end 5 - Dynamic Rate Adaptation triggered retrain at the far-end 6 - Far-end line counters unavailable.

If the last initialization failure is a 'Configuration not feasible' failure, this field indicates whether this applies to the upstream or downstream direction.

Possible values are: 0 - Upstream configuration not feasible. 1 - Downstream configuration not feasible.

Maps to the HMI GetLineStatus.lastRetrainCause