Testing conversational quality of VoIP with different terminals and degradations
Michał Sołoducha, Alexander Raake, Frank Kettler, Stefan Bleiholder · 2017
In this paper, telephone conversation test results are reported. The main goal of the research is to derive a quality assessment model for today's Voice over Internet Telephony (VoIP) communication including the influence of end-point terminals with their internal signal processing. For this reason, two different terminals were used during the test and a possibly wide range of impairments were simulated, including: coding, packet loss, noise and echo. This test serves as a core test for the other experiments by the authors. It has a refined design as compared to the test presented already in [1] with conditions allowing interterminal comparisons. Hence, some relevant insights into terminal influence on testing of conversational quality are presented in this paper.