Can you hear me now?!: it must be BGP
ACM SIGCOMM Computer Communication Review
Understanding network delay changes caused by routing events
Proceedings of the 2007 ACM SIGMETRICS international conference on Measurement and modeling of computer systems
On the analysis of overlay failure detection and recovery
Computer Networks: The International Journal of Computer and Telecommunications Networking
Call routing management in enterprise VoIP networks
Proceedings of the 2007 SIGCOMM workshop on Internet network management
Connectivity opportunity selection in heterogeneous wireless multi-hop networks
Pervasive and Mobile Computing
CORS: A cooperative overlay routing service to enhance interactive multimedia communications
Journal of Visual Communication and Image Representation
Content based packet loss recovery for classical music transmissions over the internet
PCM'10 Proceedings of the Advances in multimedia information processing, and 11th Pacific Rim conference on Multimedia: Part II
Designing a collector overlay architecture for fault diagnosis in video networks
Computer Communications
A VoIP system for mobility voice security support using the VPN
Security and Communication Networks
Multimedia Tools and Applications
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The cost savings and novel features associated with voice over IP (VoIP) are driving its adoption by service providers. Unfortunately, the Internet's best effort service model provides no quality of service guarantees. Because low latency and jitter are the key requirements for supporting high-quality interactive conversations, VoIP applications use UDP to transfer data, thereby subjecting themselves to quality degradations caused by packet loss and network failures. In this paper, we describe an architecture to improve the performance of such VoIP applications. Two protocols are used for localized packet loss recovery and rapid rerouting in the event of network failures. The protocols are deployed on the nodes of an application-level overlay network and require no changes to the underlying infrastructure. Experimental results indicate that the architecture and protocols can be combined to yield voice quality on par with the public switched telephone network