You can do settings related to FXS port polarity configuration.

Parameter DBID_IDLE_POLARITY
Description If it is enabled, the ATA will support polarity reversal.
Permitted Values 0-Forward
1-Reversal
Default 0
Web UI FXS > Preferences > FXS Port Polarity Configuration > Idle Polarity
Parameter DBID_CALLER_POLARITY
Description If it is enabled, the ATA will support polarity reversal.
Permitted Values 0-Forward
1-Reversal
Default 0
Web UI FXS > Preferences > FXS Port Polarity Configuration > Caller Conn Polarity
Parameter DBID_POLARITY_REVERSAL_ENABLE
Description If it is enabled, the ATA will support polarity reversal.
Permitted Values 0-Forward
1-Reversal
Default 0
Web UI FXS > Preferences > FXS Port Polarity Configuration > Called Conn Polarity
Author：admin  Create time：2023-11-24 16:24
Last editor：admin  Update time：2024-01-03 16:20