itu t study group 5publications greg jones telecommunication standardization bureau int 5 handbooks directives k series recommendations guide to the use of sg5 publications 1 scope and objective 2 terminology abbreviations 3 reference configuration 4 electromagnetic compatibility requirements for equipment installations general emc in centres at radio a outdoor locations lines used customer premises annex title abstract other relevant responsibilities table phenomena relating power supply effects safety resistability immunity mitigation high frequency emmission eft electrical fast transient lightning esd electrostatic discharge low