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  • 學位論文

具備分散式特色之網路電話加壓測試

A Distributed Approach for VoIP Stress Testing

指導教授 : 吳坤熹

摘要


隨著數位科技的蓬勃發展,網際網路的使用大幅增加,進而發展出各種不同類型的網路應用服務,其中Voice over Internet Protocol (VoIP) 是受到注目的產業之一。它相較於傳統Public Switched Telephone Network (PSTN),能夠大幅降低通話成本,在市場中具備競爭力。而VoIP使用者近幾年有增加的趨勢,為了提供用戶穩定的語音品質,進行VoIP伺服器的壓力測試也成為重要的議題。在本文中,我們在Unix作業系統下發展出免費的DIST-V (Distributed Stress Test for VoIP)測試軟體,以分散式的環境,藉由多台測試用電腦建立數百通的會話(session),傳送大量的Real-time Transport Protocol (RTP)封包,進而對VoIP伺服器進行壓力測試,並且將測量結果轉換成Mean Opinion Model (MOS)值,將結果提供業者選擇VoIP設備的評估

並列摘要


In this thesis, we proposed a distributed tool for VoIP which performs the stress test of audio stream delivery, by sending Real-time Transport Protocol (RTP) packets from distributed testing nodes. An implementation on Unix was developed to illustrate how the multiple testing nodes can be utilized to synchronously launch the large volume of audio streams in a stress test. Furthermore, the testing results are represented in Mean Opinion Score (MOS) to help Internet Service Providers (ISPs) evaluating suitable VoIP equipment.

並列關鍵字

Distributed Tools RTP SIP Stress test VoIP

參考文獻


[1] http://www.spirent.com/analysis/technology.cfm?media=7&ws=325&ss=110
[2] Yun-he Zhang, Zhi-tang Li, Mei-zhen Wang and Ling Xiao, "A Multi-Link Aggregate IPSec Model", First International Workshop on ETCS, Volume 3, pp. 489 - 493, Wuhan, China, 7-8 March 2009.
[3] http://www.nustream.com/
[4] J. Rosenberg, H. Schulzrinne, G. Camarillo, A. Johnston, J. Peterson, R. Sparks, M.Handley, E. Schooler, “SIP: Session Initiation Protocol ”, IETF RFC 3261, June 2002.
[5] H. Schulzrinne, S. Casner, R. Frederick, V. Jacobson, “ RTP: A Transport Protocol for Real-Time Applications”, Network Working Group, IETF RFC 1889, January 1996.

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