During the conferences and meetings of the ITU, members of delegations, representatives of Members of the Administrative Council, senior officials of the permanent organs of the Union and their authorized colleagues attending such conferences and meetings, may be granted the privilege of exchanging their communications by telephone, telex, facsimile, teletex, data transmission or telegram free of charge with their Administration or the ITU relating either to matters under discussion by such conferences and meetings or to public international telecommunications, subject to arrangements made between the Administration of the country in which such conferences and meetings are held and the Administrations concerned.