Traffic distortion and inter-source cross-correlation in high-speed integrated networks
Computer Networks and ISDN Systems
Theory, Volume 1, Queueing Systems
Theory, Volume 1, Queueing Systems
Voice over ATM: an evaluation of implementation alternatives
IEEE Communications Magazine
Real-time voice over packet-switched networks
IEEE Network: The Magazine of Global Internetworking
| Hi-index | 0.00 |
The transport of voice over a packet-based network introduces jitter in the voice flow. The jitter is compensated in the dejittering buffer by artificially delaying the first packet of the flow over the so-called dejittering delay and then cyclically reading the packets from the dejittering buffer. In this paper, we first give a general numerical method to compute the dejittering delay. Then, we introduce and justify a closed-form heuristic formula to calculate the dejittering delay for a network consisting of identically loaded, independent nodes modelled as M/G/1 queues. We demonstrate the accuracy of the heuristic formula by means of some numerical examples. Since the heuristic formula is closed-form, accurate, and explicitly shows the influence of certain network parameters, it is the preferred method to dimension the dejittering buffer and to perform sensitivity studies.