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Tummala
Meeting Requirements ... The Simple Way

Train Control Equipment

  • Control Room Equipment
  • 2 Wire Way Station Equipment
  • 4 Wire Way Station Equipment
  • Universal DTMF Way Station Equipment
  • Emergency Control Room Equipment

Telephones

  • 2 Wire Control Telephone
  • 4 Wire Control Telephone
  • Electronic Magneto Telephone
  • Selective Calling Telephone (Group Phone)
  • Handheld Telephone for Emergency Communication
  • 4 Wire Monitoring Telephone
  • Portable Emergency Telephone
  • Signal Post Telephone (Home)
  • Signal Post Telephone (Master)
  • STS Telephone
  • Handset With Microswitch

Interface Equipment

  • 4 Wire - 2 Wire Conversion Unit (Hybrid)
  • Branching Equipment (4way/6way)
  • Microwave Interface
  • Auto Exchange Interface For Accident Site Communication
  • 4 Wire Remote Interface For Accident Site Communication
  • DTMF Test Jig

Power Supplies

  • PSU for Control Room Equipment
  • PSU for Way Station Equipment
  • PSU for Selective Calling Telephone
  • PSU for Signal Post Telephone
Signal Post Telephone (Home)
The signal post telephone is designed to provide a totally hands free communication to the driver.
  • Overview
  • Technical Specifications
This consists of a robust weather proof enclosure which can be fixed rigidly at a convenient height, to the Home Signal Post using metal clamps. It houses a loud speaker and other circuitry to facilitate communication with the ASM's Console. The signal post telephone is designed to provide a totally hands free communication to the driver. It does not require any separate power supply unit at the signal post and derives all its power from the ASM's console. It does not consume any standby current. This makes the equipment very simple and reliable without the need to maintain or check up the power supply arrangements at the signal post making the equipment maintenance free and vandal proof.
Audio Power Output: > 500mW
Calling facility: By a press button at the bottom of the unit.
Mounting: Can be clamped rigidly to a 6" diameter, signal post.
Housing: Rugged weather proof metal housing.
 
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