An evaluation of delay-aware receiver playout strategies for VoIP applications

Abstract

Previous work by the authors confirm the feasibility of implementing a delay-aware receiver buffering strategy based on synchronised time within VoIP applications. Our objective in this paper is to extensively test this delay-aware approach, termed the hybrid playout strategy over diverse networks using a combination of simulation and delay emulation. We utilise both measured delay data and derived delay models and quantify the significant performance gains through use of the ITU-T E-model. We also analyse recent Internet delay studies to further assess the hybrid's wider applicability. © IFIP International Federation for Information Processing 2004.