Sciweavers

Share
INFOCOM
2002
IEEE

Assessment of VoIP quality over Internet Backbones

9 years 3 months ago
Assessment of VoIP quality over Internet Backbones
Abstract— As the Internet evolves into a ubiquitous communication infrastructure and provides various services including telephony, it will be expected to stand up to the toll quality standards set by traditional telephone companies. Our objective in this paper is to assess to what extent today’s Internet is meeting this expectation. Our assessment is based on delay and loss measurements taken over wide-area backbone networks, considers realistic VoIP scenarios and uses quality measures appropriate for voice. Our findings indicate that although voice services can be adequately provided by some ISPs, a significant number of paths lead to poor performance even for excellent VoIP end-systems. This makes a strong case for special handling of voice traffic on those paths. Even on the good paths, rare loss events can occasionally cause perceptible degradation of voice quality. Finally, the appropriate choice of the playout buffer scheme for each path was found to be of critical import...
Athina Markopoulou, Fouad A. Tobagi, Mansour J. Ka
Added 15 Jul 2010
Updated 15 Jul 2010
Type Conference
Year 2002
Where INFOCOM
Authors Athina Markopoulou, Fouad A. Tobagi, Mansour J. Karam
Comments (0)
books