| Parameter Conditions Min Typ Max Units |
| Power Supply Current | Off-Hook | | 10 | 15 | mA |
| Transmit Insertion loss | 600 0hm Impedance, 1000 Hz | | 2 | 4 | dB |
| Receive Insertion loss | 600 0hm Impedance, 1000 Hz | | 2 | 4 | dB |
| Line Impedance | At 1000 Hz | 540 | 600 | 660 | ohms |
| Coupler Match input impedance | Input impedance to Tl & T2 for 600 0hm line impedance | | 340 | | Ohms |
| Ring Detect Sensitivity | Minimum Ring voltage detected as a valid ring signal | | 20 | 38 | Vrms |
| Rl Output Voltage | Ring present at Tip & Ring | | 4.2 | | Volts |
| Loop Current Switch Control Voltage | OFF: (on-hook) ON: (off-hook) | 2.0 | 3.0 0.2 | 0.5 | Volts Volts |
| OH Control Current | Off-Hook | | 5 | | mA |
| Telephone Loop Current | Off-Hook | 10 | | 100 | mA |
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