The legislation is quite clear A person is guilty of an offence if he asends by means of a public electronic communications network a message or other matter that is grossly offensive or of an indecent obscene or menacing character or bcauses any such message or matter to be so sentA person is guilty of an offence if for the purpose of causing annoyance inconvenience or needless anxiety to another he asends by means of a public electronic communications network a message that he knows to be false bcauses such a message to be sent or cpersistently makes use of a public electronic communications networkA person guilty of an offence under this section shall be liable on summary conviction to imprisonment for a term not exceeding six months or to a fine not exceeding level  on the standard scale or to both  No mention of single v multiple communications or  weeks maximum