Although the supplementary MOU states that CTBTO “shall be a full member of the arrangement” its membership differs in one important respect in that, in addition to paying its share of the costs according to existing cost-sharing methodologies, “CTBTO shall pay to the organization providing a service an overhead charge as contribution to that organization's administrative costs”.
Bien que le protocole complémentaire précise que l'OTICE est membre à part entière de l'arrangement, sa participation diffère à un égard important: l'OTICE acquitte sa part des dépenses, selon les méthodes de partage des coûts en vigueur, et paie en outre à l'organisation prestataire de service une contribution aux frais administratifs de ladite organisation.