IOF Network Topology

One of the highlighting features of BTRC new Network Topology (NNT) is its transparency. The NNT requires the IGWs to receive all international calls through CIP and route the same downstream through ICP to ensure accurate visibility of international traffic connections. A common billing system was added to the topology to ensure that same amount of incoming calls entering the IGWs are sent onward to the ANSs. Similarly for the outgoing calls, it ensures that the calls received from the ANSs through the ICXs match with the calls routed to the overseas carriers. Following diagram shows the NNT: