4 Wire-2 Wire Portable Emergency Control Telephone for Use in Electrified Sections

The Portable Emergency Control Telephone manufactured by Epsilon is a part of the 4 Wire / 2 Wire Emergency Train Traffic Control System.  This telephone provides inter communication between any way side point along the train route and the controller.  This can be connected through 6 Pin Socket located along the Railway Track in 4 Wire side and 2 Wire side.  The telephone has ‘Trans’ and ‘Receive’ Speech Circuits.  The telephone works on 3V DC with the aid of 2 Nos. of 1.5 V dry cells.  The entire circuit, HMT and the battery container are housed inside the M.S. Body provided with shoulder strap to carry easily.  With the aid of a switch, this telephone can be selected for 2 Wire or 4 Wire operation.

The Portable Emergency Control Telephone consists of:

• Transmitter & Receiver Insets are Dynamic Type (RT 200) as per IRS-TC-74/97

• Glass epoxy boards are used for better environmental performance.

• Ferrite Core Transformer is used for miniaturization and better quality performance.

• High reliability press to talk and press to call switches are used.

• Sealing arrangement is provided for preventing pilferage of battery.

• Rugged construction of box to ensure rough handling.

• HMT is of Siemens Type made with ABS moulding  which is unbreakable.