General Description2.4. Technical SpecificationsThe technical specifications of the unit are as follows:DC Power Supply 9VDC/800mALine Voltage 24 to 72VDCDC Leakage Current > 10μAOn-hook Insulation Resistancebetween Line Terminal andthe Ground0 to 100VDC > 5MΩ100 to 200VDC > 30KΩ500 VAC/50Hz > 20KΩ100 VAC/25Hz > 100KΩRing Capacitor 0.47μF ± 10%On-hook Impedance @ 50VDC, 40 VAC/25Hz > 3000ΩRing Detect 27 to 100VAC/16 to 60HzDC Resistance (off-hook) 24 to 66VDC @ 20 to 100mA 100 to 350ΩImpedance (off-hook) 300 to 3400Hz 500 to 700ΩImbalance Ratio 300 to 3400Hz > 46dBReturn Loss 300 to 3400Hz > 18dBCurrent during Break < 700μADTMF Transmission:Frequency Tolerance +1.5%Frequency Level (High Group) -6 to -8 dBmFrequency Level (Low Group) -8 to -10 dBmInter-digit Pause in Tone Dialing 70 to 80msFax CNG Tone Detection 1100Hz ± 38HzVoice Mail and Auto Attendant System Installation and Programming Manual 2-11
