Dimensioning Links for IP Telephony
2001 (English)In: In Proceedings of the 2nd IP-Telephony Workshop, pages 14-24, New York, USA, April 2001., 2001, 14-24 p.Conference paper (Refereed)
Packet loss is an important parameter for dimensioning networklinks or traffic classes carrying IP telephony traffic. We present amodel based on the Markov modulated Poisson process (MMPP) whichcalculates packet loss probabilities for a set of superpositioned voice inputsources and link properties. We do not introduce another new model tothe community, rather try and verify one of the existing models via extensivesimulation and a real world implementation. A plethora of excellentresearch on queuing theory is still in the domain of ATM researchers,hence we attempt to highlight their validity to the IP (Telephony) community.Packet level simulations show reasonable correspondence with the predictionsof the model. Our main contribution is the verification of theMMPP model with measurements in a laboratory environment. The lossrates predicted by the model are in general close to the measured lossrates and the loss rates obtained by simulation. The general conclusionis that the MMPP-based model is a tool well suited for dimensioninglinks carrying packetised voice in a system with limited buffer space.
Place, publisher, year, edition, pages
2001. 14-24 p.
IdentifiersURN: urn:nbn:se:kth:diva-14293OAI: oai:DiVA.org:kth-14293DiVA: diva2:332072
QC 201008022010-08-022010-08-022010-08-02Bibliographically approved