RES223 – 282 – ac) that this conference has identified the frequency band 3 300-3 400 MHz for use by administrations wishing to implement terrestrial IMT systems in Nos. 5.429B, 5.429D and 5.429F;ad) that the frequency band 3 300-3 400 MHz is allocated worldwide on a primary basis to the radiolocation service; ae) that a number of administrations use the frequency band 3 300-3 400 MHz, or portions thereof, which is allocated to the fixed and mobile services on a primary basis in No. 5.429; af) that the frequency band 4 800-4 990 MHz is allocated worldwide to the mobile service on a primary basis; ag) that this conference has identified the frequency band 4 800-4 990 MHz for use by administrations wishing to implement terrestrial IMT systems in No. 5.441A for Region 2 and 5.441B for Region 3; ah) that appropriate technical measures may be considered by administrations at a national level to facilitate adjacent band compatibility between radio astronomy receivers in the frequency band 4 990-5 000 MHz and IMT systems in the frequency band 4 800-4 990 MHz, emphasizing a) that flexibility must be afforded to administrations: – to determine, at a national level, how much spectrum to make available for IMT from within the identified frequency bands; – to develop their own transition plans, if necessary, tailored to meet their specific deployment of existing systems; – to have the ability for the identified frequency bands to be used by all services having allocations in those frequency bands; – to determine the timing of availability and use of the frequency bands identified for IMT, in order to meet particular user demand and other national considerations; b) that the particular needs of developing countries must be met; c) that Recommendation ITU-R M.819 describes the objectives to be met by IMT-2000 in order to meet the needs of developing countries, noting a) Resolutions 224 (Rev.WRC-15) and 225 (Rev.WRC-12), which also relate to IMT; b) that the sharing implications between services sharing the frequency bands identified for IMT in No. 5.384A, as relevant, will need further study in ITU-R; c) that studies regarding the availability of the frequency band 2 300-2 400 MHz for IMT are being conducted in many countries, the results of which could have implications for the use of those frequency bands in those countries; d) that, due to differing requirements, not all administrations may need all of the IMT frequency bands identified at WRC-07, or, due to the usage by and investment in existing services, may not be able to implement IMT in all of those frequency bands;