Configuring ring detection parameters
PBXs from different vendors use different types of ring signals. By setting ring detection parameters, you can enable the FXO interface to detect ring signals of different frequencies and waveforms.
To configure ring detection parameters:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter FXO interface view. | subscriber-line line-number | N/A |
3. Set the debounce time for ring detection on the FXO interface. | ring-detect debounce value | The default is 10 milliseconds. This command is supported only on the SIC-1FXO, SIC-2FXO, and HMIM-4FXO interface modules. Do not set the debounce time during a conversation. As a best practice, set the debounce time to be no less than 8 milliseconds to prevent interference from causing false ring tone recognition. If you configure this command on an FXO interface, the configuration takes effect on all FXO subscriber lines on the same module as that interface. |
4. Set the frequency value for ring detection. | ring-detect frequency value | The default is 40 Hz. This command is supported only on the SIC-2FXS1FXO, and DSIC-4FXS1FXO interface modules. |