Buffer overflow probability for multiplexed on-off VoIP sources

The authors analyse the multiplexing of a large number of independent and h omogenous on-off traffic sources into a single packet switched buffer: a po ssible model of VoIP. It is shown how a previously developed formula for qu eues can be applied to this system, allowing accurate calculation of the bu ffer overflow probability via the burst-scale decay rate of the buffer stat e probabilities. Numerical results comparing the expression with simulation and with other approximations shows that the approach gives superior accur acy, with equivalent complexity.