Section 695(24) in Police Regulations, Bengal , 1943
(24)Where there are telephones connecting treasury guards and headquarters force, the relieving sentries at each end shall always, between sunset and sunrise, ring up to find out whether the telephone is in working order. If they fail to get a reply a constable shall be sent from the headquarters force to see whether the wires have been tampered with. An extra constable shall be kept for this purpose alone in the guard-room of the headquarters force. The head constable, when visiting his sentries, shall also ring up occasionally. A register shall be maintained, in which the name of each sentry on the treasury guard shall be noted as soon as he rings up headquarters.
