In a few cases, such as telecommunications, information technology (IT) helpdesk support, and conference services at the United Nations Office at Nairobi, full-cost recovery through a charge-back system is also in use.
6. 在一些情况下，如电信、信息技术服务台支助以及联合国内罗毕办事处的会议服务，也正实行通过事后收费完全回收费用的制度。