This article describes how to calibrate analog FXO lines.
Analog lines sometimes need to be calibrated due to needs:
1) To readjust the values TX and RX.
2) When a new analog trunk connection is established.
3) When having some analog call issues.
# execute fxo calibrate calibrate<----- Calibrate all fxo ports.
# execute fxo calibrate status <----- Check the calibration status.# execute fxo calibrate measurement <----- Measure current fxo echo rat.
Calibrate FXO lines can cause all ongoing calls to be terminated.
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