Originally created as a temporary fix in 2007, the swap lines established at that time connecting the US Federal Reserve, the European Central Bank, and the Swiss National Bank have been extended each time a new crisis has unsettled the markets. More recently, however, six central banks announced that they had made their swap lines permanent.
始于2007年的互换安排最初是临时性措施，在美联储、欧洲央行和瑞士国民银行间建立了联系，但每逢新危机动摇市场，这一安排就会扩大一次。但是，最近六大央行宣布将把互换安排永久化。