Each FXO port should be calibrated when connected to a new device. Calibration reduces echo experienced by users and improves DTMF digit processing. During calibration, the audio level is adjusted based on the electrical characteristics of the circuit.

 

Before starting:

  1. Configure the Gateway analog interfaces (FXS or FXO) with the Quick Setup Wizard 

  2. Ensure the FXO ports are connected


During the calibration process:


Optimized calibration values will be applied the next time the Gateway is started.