43Improper use of public telecommunication system
(1)A person who—
(a)sends, by means of a public telecommunication system, a message or other matter that is grossly offensive or of an indecent, obscene or menacing character; or
(b)sends by those means, for the purpose of causing annoyance, inconvenience or needless anxiety to another, a message that he knows to be false or persistently makes use for that purpose of a public telecommunication system,
shall be guilty of an offence and liable on summary conviction to a fine not exceeding level 3 on the standard scale.
(2)Subsection (1) above does not apply to anything done in the course of providing a cable programme service (within the meaning of Part IV of this Act).