Real-Time Implementation and Testing of VoIP Vocoders with Asterisk PBX Using Wireshark Packet Analyzer

Abstract

In the present-day digital world, the transmission of information like voice, text, video, etc. demands more bandwidth for fast and accurate transmission. Usually, 90% of information transmitted is the human voice, and various speech processing techniques are adapted for optimizing the bandwidth requirement and enhancing the performance of multiple modules like vocoders in mobile networks. To test the performance analysis of various vocoders, we used a Wireshark simulator with an Asterisk, and it is a software implementation of a private branch exchange (PBX). This work presents the performance evolution of existing voice over internet protocol (VoIP) vocoders using Wireshark with PBX Asterisk’s, The PBX Asterisk’s to analyze and capture the packets or sniffers. The Wireshark tools can diagnose the errors, the traffic flow with a graphical view and generate the statistics in the network. It is a software tool to analyze the traffic data with an intuitive and simple graphical interface in software tools are used to study. The extensive simulations are performed, and the percentage of data saved was calculated and compared with the various vocoders.