This report explores how the central securities depository and real-time gross settlement (CSD-RTGS) linkage model could be applied to collective investment scheme (CIS) passporting frameworks in Asia to enhance the post-trade efficiency of the region's bond markets. In Asia, there are a number of multilateral CIS passporting frameworks, but little attention has been given to how delivery versus payment settlements can be facilitated under such frameworks. The report finds that the CSD-RTGS linkage model has considerable potential to be applied in Asia as a settlement engine for the cross-border transactions of bonds (as well as for other financial instruments). It outlines how this can be achieved by interlinking the region's CIS central platforms and delivery versus payment settlements infrastructure under the CSD-RTGS model.