ADSL2 over POTS SPLITTER for CO Applied Standards. ITU-T G.992.1E1, ITU-T G.992.5 ETSI TR 101 728-1-1 V1.2.1, ETSI TR 101 952 ParameterParameterFrequency rangeLine Impedance600Ω0.2kHz-4kHzCO impedance600Ω0.2kHz-4kHzRT impedance600Ω0.2kHz-4kHzADSL port termination ZHP-c100Ω//0.47mHADSL modem impedance100Ω25kHz-2208kHzNominal Voice Band0.3 kHz-3.4 kHzRinging frequency25-50 HzADSL2+Band25-2208 kHzDC ...