Railways Act, 1989
59 Communication between passengers and railway servant in
charge of train.
A railway administration shall provide and maintain in every
train carrying passengers, such efficient means of communication between the
passengers and the railway servant in charge of the train as may be approved by
the Central Government :
Provided that where the railway administration is
satisfied that the means of communication provided in a train are being
misused, it may cause such means to be disconnected in that train for such
period as it thinks, fit.
Provided further that the Central Government may
specify the circumstances under which a railway administration may be exempted
from providing such means of communication in any train.