hwVoAnaloglfConfigPortImpedance 1.3.6.1.4.1.2011.5.25.1.3.1.1.1.3

This object expresses the port impedance of voice analog interfaces. impedance600Real : 600 Ohms This impedance is primarily used by FXS. impedanceComplex : 200 Ohms + 680 Ohms || 100nF This impedance is primarily used by FX0 and E&M.