Lavangnananda, K. and Panyato, P., 2012, A diagnosis system for open-source VoIP Software (FreeSWITCH) (Thai Track), Proc. of the 2012 Int. Computer Science and Engineering Conference (ICSEC2012), 18-19 October, Pattaya, Thailand, pp. 302-307.

V. Chongsuphajaisiddhi, V. Vanijja and O. Chotchuang,'Usability Standard and Mobile Phone Usage Investigation for the Elderly'," Preprocessings of Information Technology and Electrical Engineering (CITEE2012)", 12 July, Yogyakarta, Indonesia, PP. 15-20.

Ronglong Suthat, Sookplang Chaiyawut, Arpnikanondt Chonlameth, Vanijja, Vajirasak,"Design of a medication reminder and feedback system for Thai elders ",Computer & Information Science (ICCIS), 2012 International Conference on12-14 June 2012,Kuala Lumpur, Malaysia,Print ISBN: 978-1-4673-1937-9

Lavangnananda, K. and Sawasdimongkol, P.,2012,Neural Network Classifier of Time Series : A Case Study of Symbolic Representation Preprocessing for Control Chart Patterns,"Proc. of the 2012 8th Int. Conf. on Natural Computation (ICNC2012)", 19-31 May, Chongqing, China, PP. 351-356.

Pisal Setthawong and Vajirasak Vanijja, Improving the Estimation of Head Pose Orientation by Using Eyeglasses as a Key Feature, The 5th International conference on Information Technology and Multimedia (ICIMμ2011), 14-16 November 2011, Kuala Lumpur, Malaysia.

Lavangnananda, K., Yongsakun, K. and Bouvry P., 2011, Suitable Packetization Interval for using Constrained Energy Lapped Transform (CELT) CODEC in Bi-Directional Communication over WLAN 802.11g, Proc. of the 17th Asia-Pacific Conference on Communications (APCC2011), 2-5 October, Sabah, Malaysia.

Lavangnananda, K., Angsuchotmetee, C., Yongsakun, K., Panyato, P. and Sawasdimongkol, P., 2011, Performance Tradeoff between Mobility and Voice Quality among Different VoIP Deployment Strategies, Proc. of the 2011 Int. Conf. on Computer and Communication Devices, 1-3 April, Bali Island,Indonesia, pp. 158-162.

P. Setthawong, V. Vannija, “Improving the IP-PBX Administration and Management Process by Utilizing the EZY IP-PBX Frontend to augment FreePBX”, Journal of Global Management Research (JGMR), 2010.

Triyason, T., Kanthamanon, P., Warasup, K., Yamsaengsung, S., Supattatham, M.,"The effect of background traffic packet size to VoIP speech quality",(2010) Communications in Computer and Information Science, 114 CCIS, pp. 175-182. Advances in Information Technology: 4th International Conference, IAIT 2010, Bangkok, Thailand, November 4-5, 2010.

Pisal Setthawong , Pornchai Mongkolnam, and Vajirasak Vanija “Procedurally Placement of Tropical Beach Vegetation in Level Design Tools” IAIT 2009 Bangkok Thailand.

V. Vanijja, K Warasap , P. Settawong, T. Triyason, “VoIP Configuration Wizard using Web service” National Telecommunication Commission 5th Anniversary “NTC Yearend Conference 2009”, National Telecommunication Commission, 15th-16th December 2009, Bangkok.

Piyatumrong, A., Ruiz, P., Bouvry, P., Guinand, F. and Lavangnananda, K., 2009, Token Traversal Strategies of a Distributed Spanning Forest Algorithm in Delay Tolerant MANETs, Proc. of the 3rd Int. Conf. on Advances in Information Technology (IAIT2009), 2-4 December, Bangkok, Thailand. PP. 96-109.

Pisal Setthawong, Vajirasak Vannija, Siam Yamsaengsung, Montri Supattatum, Borworn Patasratorn “An Overview of VoIP for End Users in Thailand, Comparison with VoIP in Japan and Challenges Ahead” NTC International Conference 2009 , Bangkok Thailand ,5-6, March ,2009.

Piyatumrong, A., Bouvry, P., Guinand, F. and Lavangnananda, K., 2008, Trusted Spanning Trees for Delay Tolerant MANETs,  Proc. of the 2008 IEEE/IFIP International Symposium on Trust, Security and Privacy for Pervasive Applications (TSP-08), 17-20 December, Shanghai, China, pp. 293 – 299.





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