NDLI: A Service Provider's Approach for Improving Performance of Aggregate Voice-over-IP Traffic

Content Provider	IEEE Xplore Digital Library
Author	Al-Najjar, C. Reddy, A.L.N.
Copyright Year	2006
Description	Author affiliation: Texas A&M Univ., College Station, TX (Al-Najjar, C.)
Abstract	The emerging popularity and interest in voice-over-IP (VoIP) has been accompanied by customer concerns about voice quality over these networks. The lack of an appropriate real-time capable infrastructure in packet networks along with the threats of denial-of service (DoS) attacks can deteriorate the service that these voice calls receive. Traditionally, each voice call employs its own end-to-end forward-error-correction (FEC) mechanisms. In this paper, we show that when VoIP calls are aggregated over a network link or path, the provider can employ a suitable linear-time encoding for the aggregated voice traffic, resulting in considerable quality improvement with little redundancy. We show that it is possible to achieve rates closer to link capacity as more calls are combined with very small output loss rates even in the presence of significant packet loss rates in the network. The advantages of the proposed scheme exceed similar or other techniques applied to individual voice calls
Starting Page	169
Ending Page	177
File Size	168078
Page Count	9
File Format	PDF
ISBN	1424404762
ISSN	1548615X
DOI	10.1109/IWQOS.2006.250465
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-06-19
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Aggregates Internet telephony Forward error correction Computer crime Parity check codes Telecommunication traffic Encoding Delay Bandwidth Protection VoIP service DoS attacks overlays packet drops performance
Content Type	Text
Resource Type	Article

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