Technical Tip: How to calibrate FXO lines when FortiVoice has analog trunks configured and in use

[JHelio]

Description	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. Note: Calibrate FXO lines can cause all ongoing calls to be terminated.
Scope	FortiVoice.
Solution	Calibrating analog FXO lines can help to solve issues due to bad TX/RX values.