QoS Improvement Analysis of VoIP Service Which Uses Overlay Network. Case Study: Calling AWS VoIP Gateway From Bandung, Indonesia

VoIP (Voice over Internet Protocol) has been widely adopted by both a public and a private entities, making this service as the one of popular services over time. However, up to now, how to maintain quality of VoIP service which is according to the standard quality has always become a central issue for studying. Especially, if the service of a public computer network which is available in a region or a country is still lack. For example, in terms of adequate bandwidth limitation. To overcome this condition, a required mechanism which can improve the quality of VoIP service is needed, so the user can be satisfied in using this service. This study is going to explore the mechanism of VoIP service quality improvement which is done by using overlay network. The overlay network is applied by making a tunnel on the network. In addition, VoIP gateway is placed on cloud system which is Amazon Web Service (AWS). Therefore, the placement of the gateway is going to resolve the hardware gap or to maintain the computing-related barrier. The measurement of this service is done by making a call service from Bandung, Indonesia to VoIP gateway which is placed on AWS cloud system.