 The Preparatory Commission was established in 1997 and is tasked with making preparations for effective implementation of the Treaty, in particular by establishing its verification regime.The main task is establishing and provisionally operating the 337-facility International Monitoring System (IMS), including its International Data Centre (IDC) and Global Communications Infrastructure (GCI).The Commission is tasked also with the development of operational manuals, including a manual to guide conduct of on-site inspections.