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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
4 Wire Remote Interface For Accident Site Communication
The equipment can access a Divisional Office telephone exchange and dial up any subscriber through the Auto Exchange Interface provided at the Divisional Office.
  • Overview
  • Technical Specifications
This equipment is to be connected to the 4 Wire Trans & Receive lines along the track side through an Emergency Socket. The equipment can now access a Divisional Office telephone exchange and dial up any subscriber without anyone's assistance through the Auto Exchange Interface provided at the Divisional Office. By assigning a distinctive number from the Divisional Office this remote equipment can be easily accessed by any subscriber of the Divisional Office and vice versa without the intervention of the exchange staff. This provides a quick and effective communication system using the existing 4 wire cable circuits from the accident spot. Officers can co-ordinate the relief work by directly communicating the personnel at the accident spot.
Under Modification
 
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