Proposals to amend the Constitution and Convention of the ITU should reach the Secretary-General no later than 4 February 2010, i.e. eight months prior to the opening date fixed for the plenipotentiary conference (see Nos. 224 and 225 of the Constitution, Nos. 519 and 520 of the Convention, and Annex 2 to Circular letter No. 156).

Other proposals for the work of the conference should be submitted to the Secretariat as soon as possible, and at least by 4 June 2010, i.e. four months before the start of the conference (see No. 40 of the General Rules of conferences, assemblies and meetings of the Union, and Annex 2 to Circular letter No. 156).

In order to comply with provisions 41 and 42 of the General Rules of conferences, assemblies and meetings of the Union, with regard to the format of proposals for the Conference, the Secretariat has prepared guidelines for the presentation of proposals (see Annex 3 to Circular letter No. 156).