HOLUB, J., et al. Analysis of the Dependency of Call Duration on the Quality of VoIP Calls. IEEE Wireless Communications Letters. 2018, 7(4), 638-641. ISSN 2162-2337. DOI 10.1109/LWC.2018.2806442.
This paper analyses call detail records of 16 million live calls over Internet-Protocol-based telecommunications networks. The objective is to examine the dependency between average call duration and call quality as perceived by the user. Surprisingly, the analysis suggests that the connection between quality and duration is non-monotonic.