The High Level Committee (HLC) established by the Nice Plenipotentiary Conference made a number of recommendations in its report ​Tomorrow’s ITU: The challenges of change. All of the HLC recommendations were accepted by the 1992 Additional Plenipotentiary Conference.

The main structural changes were the following. The full time 5-member IRFB was changed into a part-time 9-member Radio Regulations Board (RRB). The Specialised Secretariats of the IFRB and the CCIR were merged and transformed into a Bureau for Radiocommunications (BR). The elected Director of the CCIR became the Director of the new bureau as well as the Secretary of the RRB. The Specialised Secretariat of the CCITT was transformed into the Telecommunication Standardisation Bureau (TSB) headed by an elected Director. The work of the Union was thus organized into three bureaus, one each for Radiocommunications, Telecommunication Standardisation and Development. Each Sector would have an Advisory Group, drawn from member States as well as the private sector, to advise the director of the Bureau on the work of his/her Sector. The Administrative Council was renamed the Council and was entrusted with more policy matters. A regular cycle of conferences was established to help the Union rapidly respond to new technological advances.