DTMF BASED ELECTRONIC BLOCK BELL AND BLOCK TELEPHONE EQUIPMENT

DTMF Based Electronic Block Bell and Block Telephone Equipment is meant to be used in the place of Conventional Block Bell Equipment and Block Telephones. This Equipment is used for calling by DTMF Signalling and Communication via 2 Wire Line through OFC or Quad Cable to the other end station where the tone is decoded and an audio-visual indication is activated. Similarly the tone from the other end station also is received by the first end station. The Signalling and Speech Circuit arrangement works on 24V DC + 20% - 30%. Any Equipment can be used for ‘UP’ or ‘DOWN’ Signalling by using a DIP Switch provided inside the Equipment assembled in an aluminium box, duly powder coated. The Charger is housed in an MS Box of 1 mm thickness, with slots for ventilation and is covered with a wire mesh.

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