Introduction of Flexible Routing for International Networks

This paper summarizes a deployment strategy for flexible routing in international networks. In an earlier paper, we proposed to define flexible routing for international networks based on Dynamic Nonhierarchical Routing call processing principles, including originating call control, common channel signaling and crankback capabilities, and investigated the problem of dimensioning multiservice bilateral networks assuming that flexible routing is introduced by both international carriers. In reality, however, there will be a period of transition in which most administrations will continue to design and manage international networks based on traditional hierarchical routing principles.