Setting ring detection parameters

PBXs from different vendors might use different types of ring signals. By setting ring detection parameters, you can 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 voice subscriber line.	subscriber-line line-number	N/A
3. Set the debounce time of ring detection on the FXO voice subscriber line.	ring-detect debounce value	Optional. 10 milliseconds by default. Do not set the debounce time during a conversation. Do not set the debounce time too short or false ring tone recognition might occur under power line interference. If you configure this command on a FXO voice subscriber line of a board, the configuration is effective on all FXO subscriber lines on this board.
4. Set the frequency value in the ring detection.	ring-detect frequency value	Optional. 40 Hz by default.

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