Gauging VoIP Call Quality from 802.11 WLAN Resource Usage
WOWMOM '06 Proceedings of the 2006 International Symposium on on World of Wireless, Mobile and Multimedia Networks
Dimensioning method for conversational video applications in wireless convergent networks
EURASIP Journal on Wireless Communications and Networking - Multimedia over Wireless Networks
Proceedings of the 2007 Workshop on Middleware for next-generation converged networks and applications
Porting VoIP applications to DCCP
Mobility '08 Proceedings of the International Conference on Mobile Technology, Applications, and Systems
| Hi-index | 0.00 |
This study evaluates video codec performance over VoIP using a campus wireless network. Today, the deployment of VoIP occurs in various platforms, including VoIP over LAN, VoIP over WAN and VoIP over VPN. Therefore, this study defines which video codec provides good video quality over VoIP transmission. The soft phone is used as a medium for communication between two parties. A network management system is used to evaluate and capture the video quality performance over VoIP. The quality of video codec is based on MOS, jitter, delay and packet loss. The experimental scope is limited to G.722 with MP4V-ES, G.726 16 with H.261 and G.726 24 with H.264. The results show that audio codec G.722 with MP4V-ES generates good video quality over VoIP using wireless local area network. Whereas audio codec G.726 16 with H.261 generates low rate video and voice quality performance. Therefore, using the appropriate video and audio, the codec selection increases video quality over VoIP transmission.