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Introduction ： The Windows RTP Quality Monitor

Introduction ： The Windows RTP Quality Monitor. Speaker︰ Jui-Pang Chen Date︰ 2006/11/06. Instruction of RTP Monitor. Using 『Windows RTP Quality Monitor』 1. Windows XP Driver Driver.zip 2. Windows monitor application guimonitor.zip commandline.zip Download webpage

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Introduction ： The Windows RTP Quality Monitor

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  1. Introduction：The Windows RTP Quality Monitor Speaker︰ Jui-Pang Chen Date︰ 2006/11/06

  2. Instruction of RTP Monitor • Using 『Windows RTP Quality Monitor』 • 1. Windows XP Driver • Driver.zip • 2. Windows monitor application • guimonitor.zip • commandline.zip • Download webpage • http://sourceforge.net/projects/rtpmonitor

  3. Installation of Driver • 1. Open the Control Panel • 2. Click "Network Connections" • 3. Right click on "Local Area Connection" and click on the "Properties" • 4. Click the "Install.." button 4

  4. Installation of Driver (Cont.) • 5. Click on the "Service" and then click the "Add" button • 6. Click the "Have Disk". • 7. choose the location of the driver 6 7 5

  5. A RTP GUI quality monitor • Configuration • Before using this monitor, please install the driver first. • Open "RTPMonitor.exe"

  6. Explanation of nouns • Fraction (分數)︰ • Quality of RTP packet • BYE (RTCP) ︰ • 表示一個或多個media sources (SSRC or CSRC) 退出 • SSRC (Synchronization Source) (RTP/RTCP) • Meant to be globally unique within a session • SR (Sender Report) (RTCP) • Header Info • Sender Info • Receiver Report Blocks • RR (Receiver Report) (RTCP) • Issued by a participant who receivers RTP packets but does not send, or has not yet sent • SDES (Source Description) (RTCP) • Description related to a particular session participant • CNAME (Must contain a canonical name) (RTCP)

  7. Explanation of nouns (Cont.) • Jitter︰ • Delay variation • Calculation Jitter • Si = • 第i個RTP封包的timestamp • Ri = • 收到第i個RTP封包的時間 • The deviation in transit time • D(i,j) = (Rj-Ri)-(Sj-Si) = (Rj-Sj) - (Ri-Si) • 每收到一個封包就計算 • J(i) = J(i-1) + (| D(i-1,i) | - J(i-1))/16 • 會被包含在SR和RR

  8. Color of traffic status light • Green: Indicate that the current traffic quality is good. (The fraction is below 10%) • Yellow: Indicate that the current traffic quality is ok. (The fraction is between 10% and 30%) • Red: Indicate that the current traffic quality is bad. (The fraction is higher than 30%) • White: The monitor can't gather enough information to tell about the traffic quality.

  9. Packet Dump

  10. A RTP command-line quality monitor • Configuration • Before using this monitor, please install the driver first. • Open "RTPMONcommand.exe" • After Press 'S'

  11. A RTP command-line quality monitor (Cont.)

  12. Conclusion • What is the difference between GUI and command-line of Fraction? • You can refer to source code. • 什麼是這個軟體最能給與使用者有感覺的功能? • 從管理者角度來看傳輸的品質，一眼就能夠從顏色判斷品質好壞，就是蠻好的功能 • 他所呈現的資訊是否是你想要的? • Fraction, Jitter, Total Loss, number of packets • .

  13. Reference • Windows RTP Quality Monitor • http://sourceforge.net/projects/rtpmonitor/ • rtpdump • http://wiki.ethereal.com/rtpdump

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