LTE deployment is experiencing a significant boom. It is expected that in addition to data services, operators will deliver Voice, Video, and SMS services, as well as advanced services, over their LTE networks. For this, IMS network architecture will be used, specifically, the VoLTE specifications. It is a challenge to ensure that the overall user experience will live up to expectations. RADVISION experts will discuss what is needed to understand the latest VoLTE requirements from handset to the core network side. VoLTE testing methodologies including end user experience measurement of voice and Video will be discussed. LTE test scenarios will also be covered, as an important step in order to ensure interoperability according to the mobile phone standard 3GPP. In addition, the webinar will also focus on minimizing testing time and how to make sure that your LTE device is ready for wide scale deployment.

1. Ensuring VoLTE Conformance and User Experience July 28th, 2011 Sagi Subocki Director of Product Management Head of IMS Segment RADVISION sagis@radvision.com Eli Cohen Director, Product Management Head of Testing Segment RADVISION elic@radvision.com

2. Agenda LTE and its impact on telecommunications VoLTE Ensuring Quality of Experience over VoLTE VoLTE testing challenges RADVISION’s solutions

3. LTE and its Impact on Telecommunications

4. LTE is a new All-IP, mobile access technology that enables much higher bandwidth with low latency for mobile networks

5. LTE - The Future of Telecommunications 132 operators in 56 countries are currently investing in LTE for next-generation networks Juniper research (11/2010): Operators will make $100 billion off LTE by 2014 Maravedis research (5/2010): Top 25 LTE operators will reach over 200 million LTE subscribers by 2015 CAPEX spending to reach $14 billion in 2015

6. Operators’ challenge: 3rd-party service providers will provide good Voice and Messaging over their LTE network

8. Service continuity

9. Roaming capabilities

11. VoLTE

12. VoLTE - Voice over LTE A subset of the IMS standard that covers only basic services and is ready to be deployed NOW.

13. VoLTE - Voice over LTE IMS profile Starts as “One Voice” Initiative of 18 operators and Handset vendors GSMA adopts it Work continues on the initial “One Voice” draft Renamed to “VoLTE”

14. VoLTE Operators supporting VoLTE: 3 Group AT&T Bell Canada China Mobile Deutsche Telekom/T-Mobile KDDI Mobilkom Austria MTS NTT DoCoMo Orange SKT SoftBank Telecom Italia Telecom New Zealand Telefónica Telenor TeliaSonera Verizon Wireless Vodafone

15. VoLTE Handset manufacturers and equipment vendors supporting VoLTE: Acme Packet Alcatel-Lucent Aylus, Camiant Cisco Colibra Communigate Comneon Ericsson Fujitsu Genband Huawei LG Motorola Movial Mu NEC Nokia Nokia Siemens Networks Qualcomm RADVISION Samsung Sony Ericsson Tekelec

17. 1 year after the launch of their LTE Network

18. 2 years after the launch of their LTE Network

20. Key to VoLTE Success Compliancy to the standards: Ensures interoperability End-user experience Easy deployment “Worry-free” roaming Smooth evolution to IMS Ability to add new IMS services

21. Factors that Affect End-User Experience IOT QoS Video Quality Audio Quality Standard

22. VoLTE IOT - IMTC Market leaders work to create interoperable, standard-based products in a non-profit organization Development of testing plans and conducting IOT IMTC IMS Activity Group: Selected by “One Voice” initiative to develop VoLTE testing specification Focuses on interoperability of IMS devices and technologies Developing a VoLTE testing plan Group members include Alcatel-Lucent, AT&T, Ericson, France Telecom, Nokia, NSN, RADVISION, Samsung, Sony-Ericson, ST-Ericson

23. PLAN and STATUS 2011 Enhanced testing documentation Finalize test cases according to plan VoLTE testing at IMTC SuperOp!, May 16-20, 2011 in Hawaii Additional IOT events in 2011

24. Audio & Video Quality Measurement Can Audio & Video Quality be measured? Manually or automatically If so, how do we measure it? Online or offline? Additional parameters to take into consideration: Network Codec Content type

25. MOS MeanOpinion Score (MOS): The arithmetic mean of all individual observations, ranging from 1 to 5. MOS Quality Impairment: 5: Excellent 4: Good 3: Fair 2: Poor 1: Bad Good Fair Poor Bad

26. Media Quality Measurement Methodologies “Full Reference” “No Reference”

27. Voice Quality VoiceQuality - No Reference Based on a subjective opinion scale from 1-5 according to ITU-T G.107 Analyzes the Voice Quality using different voice codecs in real-time Voice Quality – Full Reference PESQ: Perceptual Evaluation of Speech Quality using MOS scoring (Listening Quality), conforming to ITU-T P.862 Compares two-wave format (online and offline)

28. Video Quality, Full Reference Full-Reference allows you to perform a Video Quality analysis and compare the degraded video sequence to the original one while synchronizing the original and degraded streams: VMOS by frame Lip-Synchronization Cause Analysis Partial Image Analysis Video KPI (Blockiness, Blurriness, PSNR, …..) “Full Reference”

30. 1 year after the launch of their LTE Network

31. 2 years after the launch of their LTE Network

33. INTEROPERABILITY STANDARDIZATION Standardization & Interoperability SIMPLet

34. IMS Compliancy Challenges Many new network entities Many new protocol requirements New interfaces Different access networks, each behaving differently: Cellular, Wireless, Fixed Line, Cable, LTE, WiMAX New standards constantly added upon and revised

35. IMS VoLTE Requirements AKA-MD5 (RFC 3310) Security agreement (RFC 3329) SigComp(RFC 3320, RFC 4896, RFC 5049. . ) IPsec Media Authorization (RFC 3313) P-headers Service-route Mechanism (RFC 3608) IPv6 Preconditions (RFC 4032) IMS Resource Reservation (RFC 3312) Path Header (RFC 3327) SDP Extensions RTCP – Extended Reports RTCP – Feed Back P-preferred-identity P-access-network-info P-asserted-identity P-called-party-id P-charging-vector P-visited-network-id P-associated-uri P-profile-key P-answer-state More . .

37. Video Telephony

38. Presence and IM

40. RADVISION is the leading provider of core technologies, products and solutions that enable Unified Visual Communications over IP, 3G and emerging next generation IMS networks. RADVISION's mission is to make video a natural part of any electronic interaction – anytime, anywhere and over any device. 32

41. Turnkey Solutions - Professional Services Testing Products Client Products & Projects SIP Server Products Client Frameworks Server Frameworks SIP Server Core Presence & Events B2BUA Multimedia Terminal Framework Testing & Validation Technology Protocol Toolkits NAT Traversal MSRP A-RTP Diameter SIP Developer Suite IMS SIP Suite H.323 MEGACO MGCP 3G-324M End-to-End Product Portfolio

43. Leading Video over IP Core technology

44. Compliant with leading standards

45. Vital role in standardization

46. RADVISION’s IPR

47. Proprietary advanced QoE technology

48. Cause analysis and optimization

49. Human vision database

50. Unique synchronization algorithm

51. Video Quality – innovative, unique research

52. VQ databases and data analysis

53. VQ assessment techniques

54. VQ formulas and coefficients

55. Stream analysis and synchronization

56. Jointresearch with academia

57. Image processing

58. Packet loss analysis

61. SIP

62. H.323

63. 3G-324M

64. SIP Server

65. IMS Server

66. Gatekeeper

67. Media Emulation

68. Network Impairment

69. Media Viewer

70. Audio & Video Playback

71. Audio MOS Ref-based (PESQ)

72. Audio MOSNo-reference

73. Video MOSFull-reference

74. Video MOS No-reference, Online & offline

75. XML/API

76. Test Scheduler

77. Test ResultAnalysis