Hiroyuki Oouch, Tsuyoshi Takenaga, Hajime Sugawara, M. Masugi
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引用次数: 32
Abstract
This paper evaluates suitable voice-data length in IP packets for the adjustment of VoIP network systems. Based on measurements In a real environment, we examined the voice-quality level while varying the voice-data length of IP packets under various network conditions. We found that a VoIP system with long-voice data has high-transmission efficiency but there is a high deterioration in the voice-quality level in an inferior network. We also discovered that a VoIP system with short-voice data is tolerant to packet losses and preserves voice quality. Based on these results, we propose a VoIP system that sets the voice-data length of IP packets according to dynamically changing network QoS conditions to achieve both high-transmission efficiency and stable voice quality.
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