POST PORT IMPEDANCE: Zr=600 Ω
ModemModem impedance: 30 kHz to 4.4M Hz 100 Ω
Insertion loss: @1020 Hz <0.3dB
200Hz<f<3.4KHzwith 1020Hz center <± 1 dB
Return loss: 300 Hz< f< 500 Hz >14dB
500 Hz< f< 2000 Hz >18dB
2000 Hz< f< 3400 Hz >14dB
LCL :50 Hz< f< 600 Hz >=40dB
1104K Hz< f< 4.4M Hz >=30dB
Attenuation:30 kHz<f<138 kHz >45dB
138 kHz<f<4.4 MHz >55dB
Delay distortion:500 Hz<f<2800Hz 150 u sec
DC resistance: <25 Ω
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Isolation resistance, branch-branch:100 VDC; term = ∞Ω >5MΩ