Journal article

MATOUŠEK Petr, KMEŤ Martin and BASEL Martin. On-line Monitoring of VoIP Quality Using IPFIX. Advances in Electrical and Electronic Engineering. Ostrava: VŠB-Technical University of Ostrava, 2014, vol. 2014, no. 4, pp. 325-333. ISSN 1804-3119. Available from:
Publication language:english
Original title:On-line Monitoring of VoIP Quality Using IPFIX
Title (cs):Monitorování provozu VoIP pomocí technologie IPFIX
Journal:Advances in Electrical and Electronic Engineering, Vol. 2014, No. 4, Ostrava, CZ
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VoIP quality, R-factor, IPFIX, monitoring
The main goal of VoIP services is to provide a reliable and high-quality voice transmission over packet networks. In order to prove the quality of VoIP transmission, several approaches were designed. In our approach, we are concerned about on-line monitoring of RTP and RTCP traffic. Based on these data, we are able to compute main VoIP quality metrics including jitter, delay, packet loss, and finally R-factor and MOS values. This technique of VoIP quality measuring can be directly incorporated into IPFIX monitoring framework where an IPFIX probe analyses RTP/RTCP packets, computes VoIP quality metrics, and adds these metrics into extended IPFIX flow records. Then, these extended data are stored in a central IPFIX monitoring system called collector where can be used for monitoring purposes. This paper presents a functional implementation of IPFIX plugin for VoIP quality measurement and compares the results with results obtained by other tools.
   author = {Petr Matou{\v{s}}ek and Martin Kme{\v{t}} and Martin Basel},
   title = {On-line Monitoring of VoIP Quality Using IPFIX},
   pages = {325--333},
   journal = {Advances in Electrical and Electronic Engineering},
   volume = {2014},
   number = {4},
   year = {2014},
   ISSN = {1804-3119},
   language = {english},
   url = {}

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