1. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL

2. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL #AvayaATF The Impact of Network on Video Quality Anatoli Levine Director, Product Management Radvision, an Avaya Company

3. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL Outline Importance of Video Quality Factors affecting QoE QoE challenge Video Quality measurement Steps in implementing Video Evident Monitoring Solution 3

4. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL The Importance of the Video Quality Video services are becoming a popular mode of communication The visual sense is extremely important How do network conditions affect Voice & Video Quality? Is your network ready to provide Video services? 4

5. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL IP Video Surveillance Video Web Collaboration Video Conferencing & Telepresence IM &Video Messengers Social Networking Sites Video Conferencing ASPs Video Streaming Video Mobile Video is Everywhere! 5

6. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL Parameters Affecting Quality of Audio ? 6 IP Network Receiver Encoder Sender Packetize Jitter buffer Decoder Unpack End-to-end perceived voice quality (MOS) Loss, Delay, Jitter, Ordering, Duplicate,….. Distortion & delay Delay Delay & Loss Codec impairment Delay

7. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL 2-20 Packets/frame 1:400 x20 250ms Why Interactive Video Is So Unique ? 7 Interactive video is sensitive to latency Video is high capacity Video is error sensitive Video traffic is not uniform or constant +45ms / -75ms Interactive video is sensitive to lip sync Source: IEEE publications

8. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL Parameters Affecting Quality of Experience Packet loss Encoding and Compression 8 Frame per seconds

9. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL Audio / Video Quality Scoring Mean Opinion Score (MOS) The arithmetic mean of all individual observations, ranging from 1 (Bad) to 5 (Excellent). 9

10. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL Questions 10 Can my network support full video services ? What is the expected video / audio quality after full deployment ? Do I expect to have interoperability issues ? Pre-deployment Post-deployment Why do I suffer from pixelated video / freezes ? How network conditions affect my video ? Why do I have interoperability issues ? Why do I have audio issues ? In-Service What is the status of the calls on my network ?

11. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL Video Quality Measurement Methodology 11

12. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL Media Quality Becomes an Issue Unmanaged Networks Varying Network Capacities Varying Devices 12

13. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL Factors Affecting Video Over IP Quality 13 Source: Packet loss, for instance, is considered by many to be the most annoying disturbance in interactive video communications. In fact, in a poll question we posted in a recent webinar on user experience, 46% of the participants chose packet loss as the factor that affects the quality of real-time video most.recent webinar on user experience

14. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL Video Quality Measurement Methodologies 14

15. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL Video Quality Full-reference Full-reference allows you to perform a Video Quality analysis and compare the original video sequence to a degraded one: Unique synchronization algorithm developed by Radvision take on consideration: Different frame rates, Resizing, profile, codec, bw…. Partial picture, Picture in picture, Compression artifacts Black period, Welcome frames, Logo additions, Title additions Video Quality algorithm based on frame analysis 15

16. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL Video Quality Real-time Measurement Video Quality Online Standards ITU G.1070 performs global video quality estimation based on network and codec parameters that are unprecedented in scope to guarantee that the tool maintains the highest correlation with video quality test results measured by individual perception. ITU-T G.1070 (Objective Video Quality) ITU-R BT.500-9. (Subjective) Human Vision Survey Extensive & Automated Human Vision survey based on Full-Reference Radvision Innovative techniques 16

17. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL Human Vision Database Video Quality Surveys Unprecedented in scope (x1000 inputs) Variable contents: video conferences, motion pictures… Variable artifacts: blockiness, packet loss, blurriness… Worldwide, different viewing preferences 17

18. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL Extensive & Automated Human Vision Survey Guarantees high correlation with Human Perception Database enhanced with state-of-the-art RV Full- Reference algorithms RADVISION’s Human Vision Database was enhanced with thousands of video samples and their references, designed for objective analysis. We applied state-of-the-art RV Full-Reference (FR) standard Video Quality algorithms, and obtained a Full-Reference recommended Video Quality score 18

19. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL Innovative VQ Measurement Algorithms Additional algorithms for performing global video quality estimation, based on: Packet-loss propagation Quality score based on compression level Bit-rate and frame-rate fluctuation as an indication of quality Quality score based on the dynamism level of the video Reason for Video Quality degradation, as well as optimization methods 19

20. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL Effect of Packet Loss Propagation Advanced techniques for packet loss propagation analysis, based on: Refresh rate – Intra frame or Intra macro blocks Packet loss percentage Packet loss patterns 20 Standard VMOS: 4.4 RV VMOS: 4.4 No Packet loss Packet loss Propagation of Packet loss Standard VMOS: 3.4 RV VMOS: 2.4 Standard VMOS: 4.4 RV VMOS: 2.4

21. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL Video Quality, Image-Based Performs Video Quality analysis without reference and without network parameters, based on image quality: Blockiness, blurriness, image loss, … Video MOS is the aggregate of video metrics CPU consumption is very extensive 21

22. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL How to Detect Image Quality Loss Video packet loss concealment detection based on image content Innovative research presented in 16th European Signal Processing Conference (EUSIPCO2008) Different algorithm for I-frame and P-frame Over 90% detection precision 22

23. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL Steps in Implementing Video 23

24. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL Steps in Implementing Video N etwork R eadiness for voice & video T est and O ptimize Your N etwork R eal T ime M onitoring QoE Assess Optimize Monitor 24

25. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL eVident Video Monitoring 25

26. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL eVident Monitoring Solution 26 Service Provider Video Network readiness Room and network assessment Proactive monitoring and management Video Service readiness Improving Video services Enterprise Video Network readiness Pre-Call assessment Room and network assessment Proactive monitoring and management Improve network visibility System Integrator Network readiness as service Video Service availability Proactive monitoring and management Real-time monitoring Easier deployment Video Network Monitoring - Market Segment Complete Video Monitoring Solution

27. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL eVident Monitoring Solution 27 The Intelligent and Easy Way to Monitor your Video Network Radvision provides a software-based monitoring solution for use during various stages of the network deployment cycle: Pre & Post Deployment Video Network Readiness Video Quality Measurement and Analysis Real Time Video Monitoring

28. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL eVident Benefits Reduction in customer turn- up costs Lower network operations center costs Monitor and proactively troubleshooting V2oIP calls Increased customer satisfaction Minimize deployment time Providing eVident based analysis as a service to customers. 28

29. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL Radvision’s PreVideo PreVideo ensures: Network readiness for Voice and Video over IP (HD) Correct network configuration Client/Server architecture Topology emulation, including interaction with various types of infrastructures Problem prevention by proactive testing Optimal end-user experience (voice and video quality) 29

30. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL PreVideo – Distributed Solution Manager PreVideo Agent Paris PreVideo Agent Tokyo 30

31. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL PreVideo - Functionality Support SIP, H323, CISCO/TIP Voice & Video Quality MOS Hundred of calls simultaneously XML – Remote Control API Report PDF, EXL, WORD Format USB Agent Key (Plug & Play) Pre-Call Self Testing QoS 31

32. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL Analyze and Measure Your Audio & Video Measure and analyze Audio and HD Video Quality Cause analysis Quality improvement options 32 CAPTURE NETWORK

33. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL Real Time Video Monitoring Solution Real-time QoE Monitoring Non-intrusive (Agent-less) Multiple Vendor Support (Radvision, Polycom, Lifesize, Tandberg, Cisco) P2P and Conference Call Problem Detection and Solution CDR with QoE as Metrics (History) Alerts on Problems (< threshold) – Alarms System Performance Analysis Analyzes QoE Trends & Reports 33 Actively Detects Control your infrastructure! Tunes and Optimizes your Network

34. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL RVMON – Architecture 34 Radvision EPs can send additional information WEB Interface Reporting Alarm Notification

35. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL Complete Monitoring Solution Enhances pro-active efforts to avoid service quality problems before deployment; Ensure high quality end-user experience Automate, isolate and analyze video problems Increases the efficiency of reactive measures by providing real-time analysis and diagnostics Diagnostics and troubleshooting Reduced customer service response time Optimizes intelligent database indexing and integrated call history End-to-end integrated solution eVident Monitoring - Benefit 35

36. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL Articles 36 embedded-computing TMCNET blog.radvision

37. ©2013 Avaya Inc. All rights reservedFebruary 26-28, 2013 | Orlando, FL Thank you! #AvayaATF 37