Abstract:
VoIP is an emerging technology aimed at leveraging the benefits offered by an IP network for both voice and data transmission. The integration of voice and data traffic onto a single network is led by a demand for multi-service applications over the global Internet. Even though the possibility of toll-bypass could result in considerable savings in long-distance calls, networks deploying VoIP face challenges in terms of packet loss, delay, scalability, reliability, inter-operability and lack of uniform standards. The Circuit Switch model within OPNET was used in the current work to quantify the performance of a VoIP network used in conjunction with a PSTN network. This study is tuned towards providing an easier migration path from a pre-dominantly circuit-switched telephony network to a converged network infrastructure. The focus of the current work is on the evaluation of the circuit switched model within OPNET 8.0 with respect to call priorities and call re-routing during the migration process
