Offences in connection with telephones.
13.—(1) If any person—
(a) sends any message by telephone which is grossly offensive or of an indecent, obscene or menacing character;
(b) sends any message by telephone which he knows to be false, for the purpose of causing annoyance, inconvenience, or needless anxiety to any other person; or
(c) persistently makes telephone calls without reasonable cause and for any such purpose as aforesaid;
he shall be liable upon summary conviction to a fine not exceeding ten pounds, or to imprisonment for a term not exceeding one month, or to both such fine and imprisonment.
(2) A contravention of this section shall be deemed to be an offence under the Act of 1908.