Teltone TLS-3 Telephone Line SimulatorCondition:* Used, Removed From Service In Working Condition. Unable To Test. As Pictured.Additional Notes:* Portable 2-Line Unit* Precise call progress tones, tone/rotary dialing* Programmable Line Parameters* Caller ID, Visual Message Waiting* Realistic, simulated CO/PBX lines in a compact, fully-featured unit* Eliminate the cost and hassle of locating phone lines for your demos* Input Voltage: 24 Volt DC Nominal, 500 mA Minimum* On-Hook Voltage: -42 Volt DC Nominal* Interfaces: RJ-11* Ring Frequency: 20 Hz* Dial Tone Delay: 0.1 Seconds* Network Response Delay: 0.2 Seconds* Line Attenuation: -6 dB, -16 dB; 2 dB @ 1 kHzTeltoneTLS-3