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The quality of bulky real time voice communication over an IP network degrades due to packet header overhead, network congestion and improper queuing strategies. These overheads affect the overall IP network performance and QoS parameters of voice communication such as packet loss, packet delay and packet latency or jitter. The IP Network achieves best effort service by using Integrated Services and Differentiated services. In this paper, the authors discuss how the active networking services are suitable to reduce the impact of congestion and provide on demand QoS service in an IP network. They present system architecture for the flow of voice packets in active networking services and propose an algorithm Adaptive Rate Control-Cryptographic Active Voice Transco ding (ARC-CAVT) for Congestion Control.
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