Abstract
Voice over IP (VoIP) is a promising low-cost voice communication over the wireless IP network. To provide satisfactory VoIP services, the Quality of Service (QoS) of the wireless network should be guaranteed. This paper proposes a VoIP performance measurement freeware called NCTU VoIP Testing Tool (NCTU-VT). We compare NCTU-VT with two commercial tools SmartVoIPQoS and IxChariot in terms of packet loss, latency, and Mean Opinion Score (MOS) of the VoIP sessions in Wi-Fi network. Our study indicates that these three tools can accurately measure VoIP performance in Wi-Fi environment.
Original language | English |
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Pages (from-to) | 318-324 |
Number of pages | 7 |
Journal | Wireless Communications and Mobile Computing |
Volume | 12 |
Issue number | 4 |
DOIs | |
State | Published - Mar 2012 |
Keywords
- mean opinion score
- performance measurement
- quality of service
- voice over IP