Endpoint admission control with delay variation measurements for QoS in IP networks
ACM SIGCOMM Computer Communication Review
Deterministic Time-Varying Packet Fair Queueing for Integrated Services Networks
Journal of VLSI Signal Processing Systems
Analysis of delay and delay jitter of voice traffic in the internet
Computer Networks: The International Journal of Computer and Telecommunications Networking
PCP-DV: An End-to-End Admission Control Mechanism for IP Telephony
IWDC '01 Proceedings of the Thyrrhenian International Workshop on Digital Communications: Evolutionary Trends of the Internet
PCP: An End-to-End Measurement-Based Call Admission Control for Real-Time Services over IP Networks
QoS-IP '01 Proceedings of the International Workshop on Quality of Service in Multiservice IP Networks
Challenges for Mobile Voice-over-IP
NETWORKING '00 Proceedings of the IFIP-TC6/European Commission International Workshop on Mobile and Wireless Communication Networks
Capacity Management for Internet Traffic
INTERWORKING '00 Proceedings of the 5th IFIP TC6 International Symposium on Next Generation Networks, Networks and Services for the Information Society
Computer Networks: The International Journal of Computer and Telecommunications Networking
IPOM'05 Proceedings of the 5th IEEE international conference on Operations and Management in IP-Based Networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
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IP telephony presents a tremendous opportunity to service providers to offer both traditional services as well os a range of creative new services. However, there are substantial challenges to be faced in supporting a resource management framework that is adequate for telephony, and in providing a signaling architecture that enables these services while preserving user privacy and preventing theft of service. This article describes the distributed open signaling architecture, a framework for call signaling and resource management that meets these needs. A key contribution of our work is a recognition of the need for coordination between signaling, which controls access to telephony-specific services, and resource management, which controls access to network-layer resources. We evaluate one approach to resource management in the backbone, consistent with our architecture, using signaling for aggregates of flows. Using traces from cells on the AT&T long distance network, we show that the multiplexing gains achieved by such aggregation con achieve most of the benefits of per-flow signaling, while avoiding its overheads. We also evaluate scheduling algorithms in order to understand their effect on the end-to-end delay experienced by voice packets