law: Indian Telegraph Act, 1885
  23. Intrusion into signal-room, trespass in telegraph
  
  office or obstruction
  If any person-
  (a) without permission of competent authority, enters the
  
  signal-room of a telegraph office of the government, or of a person licensed
  
  under this Act, or
  (b) enters a fenced enclosure round such a telegraph office in contravention
  
  of any rule or notice not to do so, or
  (c) refuses to quit such room or enclosure on being requested to
  
  do so by any officer or servant employed therein, or
  (d) willfully obstructs or impedes any such officer or servant
  
  in the performance of his duty,
  he shall be punished with fine which may extend to five hundred
  
  rupees.