Impedance mismatching results in audible echos on the line and reduced call quality. Correctly matching the line impedance reduces or eliminates the echo. A number of factors influence the line impedance; line types which vary from country to country and vary between geographic regions, as well as the distance between the node and the central office.
The Sonus SBC 1000/2000 FXO Port Calibration function programmaticaly determines the optimum impedance and the local loop type settings and configures each selected port accordingly. The port calibration task is located in the WebUI under the Tasks tab and is performed as described in this section.
Calibrate FXO Ports |
The Calibration FXO function is an service affecting operation.
To calibrate an FXO port: