Product Profile of Dual-Tone Multi-Frequency Way Station Telephone
Tummala Electronics Pvt. Ltd. manufactures Dual-Tone Multi-Frequency Way Station Telephone. Tummala Electronics Pvt. Ltd. offers Railway Communication Equipment, Solar Water Heaters and Solar Powered Lighting Systems. The Dual-Tone Multi-Frequency Way Station Telephone is used to facilitate communication between a train controller and way side stations in both 2 wire & 4 wire areas. It is housed inside a desk type telephone cabinet. It consists of a DTMF Receiver, Code Setting and Group Call DIP switches and associated logic circuitry.
Key Features of Dual-Tone Multi-Frequency Way Station Telephone
- Supply Voltage: 12 Volts DC +/- 10%
- Minimum detectable signal level: -25 dB
- Send efficiency: greater than 774mV
- Side tone [2wire]: less than 100mV
- Receive efficiency: greater than 100mV
- Insertion Loss: less than 1 dB
- Current consumption:
- Idle: less than 20 mA
- Ringing: less than 50mA
- Seaking: less than 30mA
- Piezo buzzer:
- Operating Voltage: 12 Volts DC
- Current Consumption: 20mA Max
- Sound Output: 80 dB min
