1. Lync Network Readiness Assessment Exam 74-335
Brian Ricks | Principal Consultant, BriComp Computers, LLC
Thom Foreman | Infrastructure Consultant, Wadeware, LLC

2. The Modeling Phase

3. Meet Brian Ricks | @bricomp
9/21/2018
Meet Brian Ricks
Principal Consultant, BriComp Computers, LLC
Unified Communications Architect
Microsoft Certified Solutions Master
Microsoft MVP since 2006
Enterprise Microsoft collaboration solution design, development, configuration, administration & maintenance
More than 20 years experience in IT industry
Network Infrastructure Corp., Resolute, Phelps Dodge
Independent since 2009
Fill in with your title and other info about you.
© 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

4. Meet Thom Foreman Infrastructure Consultant – Course Developer
9/21/2018
Meet Thom Foreman
Infrastructure Consultant – Course Developer
At Wadeware, LLC since 2006
Main focus on Lync and MS products
Created learning for Microsoft, including:
Masters, Ignites, MSL/LeX, TAP/RDP, Internal and more
MCSE, MCSA, MCITP, MCTS, MCP, CompTIA’s as well
More than 15 years experience in IT industry
Wife and 2 kids, live in Shoreline, WA
Fill in with your title and other info about you.
© 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

5. Topics The Modeling Phase 01 | Performing Usage Modeling
02 | Performing Traffic Modeling
03 | Lync Bandwidth Calculator

6. Setting Expectations Target Audience
9/21/2018
Setting Expectations
Target Audience
Professionals with data networking experience who take part in the planning, design, and deployment of Lync UC Solutions in the enterprise.
Candidates must have strong knowledge of data networking, an industry or vendor qualification, and be able to translate business requirements into technical and networking requirements for a UC solution
Suggested Prerequisites/Supporting Material
Lync Server Networking Guide V2
Visit
This slide could potentially change for every course.
© 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

7. Performing Usage Modeling

8. Performing Usage Modeling
20335
05: Usage and Traffic Modeling
Performing Usage Modeling
Microsoft Lync Server 2013 Planning Tool

9. Information Requirements for Usage Modeling
20335
05: Usage and Traffic Modeling
Information Requirements for Usage Modeling
These include:
Usage scenarios
Usage models
Personas
Capturing data for usage models:
How many site locations are there?
How many users are at each site location?
How many users will always be remote?
What are the future growth estimates?
What sort of WAN technology/topology is deployed?
What is your overall WAN link speed?
What is the maximum/current available bandwidth for Lync traffic per WAN link?
Predefined usage models

10. Using Personas in Usage Modeling
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05: Usage and Traffic Modeling
Using Personas in Usage Modeling
Personas:
Represent the behavior of classes of users present in a customer’s environment
Up to 10 personas in the tool
They are typically independent of location
Persona characteristics include:
Utilization of Lync modalities as defined in usage models: none, low, medium, high:
They can be job-related (for example, ”our sales reps make plenty of PSTN voice calls”)
They can be related to administrative policy (for example, “video calls are not allowed for vendors in our organization”)
Percentage of users working remotely: 0% – 100%
Others factors related to administrative policies or users behavior

11. Validating Personas and Usage Models
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05: Usage and Traffic Modeling
Validating Personas and Usage Models
Information to evaluate includes:
The number of PBXs implemented
The number of PSTN channels provisioned
The number of any intersite tie connections between PBXs, or whether intersite calls are made through the PSTN
The number of users at each location
Call data records (CDRs) for PSTN traffic usage
Usage statistics, such as the maximum number of concurrent calls during the busy hour:
Total number and usage of PSTN channels at each site
Trunk usage for intersite connections
Other Locations
PSTN
PBX
Peer Channels
PSTN Channels

12. Collecting Data to Validate Models for Estimating Call Flow
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05: Usage and Traffic Modeling
Collecting Data to Validate Models for Estimating Call Flow
Maximum number of conferencing ports used
Average maximum number of concurrent conferences
Including the number of participants when that maximum occurs
Average meeting size
Average meeting duration
Total minutes of conferencing used per day and per month

13. Lync Bandwidth Calculator Usage Models
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05: Usage and Traffic Modeling
Lync Bandwidth Calculator Usage Models
Maximum concurrency of x% of the user base using instant messaging and presence
Maximum concurrency of x% of the user base using peer-to-peer audio
Maximum concurrency of x% of the user base using peer-to-peer video
Maximum concurrency of x% of the user base using audio conferencing
Maximum concurrency of x% of the user base using video conferencing
Maximum concurrency of x% of the user base using desktop sharing
Maximum concurrency of x% of the user base using PSTN audio
Maximum concurrency of x% of the user base working remotely

14. Microsoft Lync Server 2013 Planning Tool
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05: Usage and Traffic Modeling
Microsoft Lync Server 2013 Planning Tool
Show the students what the Planning Tool looks like by referring to the image on the slide.
You navigate the Microsoft Lync Server 2013 Planning Tool by using a combination of a toolbar, page- specific buttons and links, and context-specific panes.
The context-specific panes provide design information for planning and capacity that is relevant to the selection options on a specific page.

15. Performing Traffic Modeling

16. Performing Traffic Modeling
20335
05: Usage and Traffic Modeling
Performing Traffic Modeling
Video codec bandwidth

17. Call Flow Scenarios RDP Bandwidth Estimations Screen size Acceptable
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05: Usage and Traffic Modeling
Call Flow Scenarios
RDP Bandwidth Estimations
Screen size
Acceptable
Optimal
1280x800
384 Kbps
1.5 Mbps
1440x900
512 Kbps
2 Mbps
1680x1050
768 Kbps
2.75 Mbps
1920x1200
1 Mbps
3.5 Mbps
Note: Sharing in the Microsoft PowerPoint presentation graphics program is accomplished by using a different method for desktop sharing. Older versions of Lync use a built-in PowerPoint file viewer, or, for web presentations, the file is converted into a dynamic HTML stream that requires the Microsoft Silverlight browser plug-in.
To improve this experience for Lync Server 2013, an Office Web Application Server handles PowerPoint presentations by using dynamic HTML and JavaScript.

18. Types of Lync User-Generated Traffic
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05: Usage and Traffic Modeling
Types of Lync User-Generated Traffic
Primary focus:
Peer-to-peer audio
Multiparty audio
Secondary focus:
Peer-to-peer video
Multiparty video
PSTN audio
Partially (only in modeling):
SIP signaling (includes presence)
Instant messaging
Desktop/application sharing
Discuss the different types of Lync user-generated traffic.

19. Network Bandwidth Requirements for Lync 2013
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05: Usage and Traffic Modeling
Network Bandwidth Requirements for Lync 2013
Modality
Description
Maximum bandwidth
Typical bandwidth
IM, presence, and signaling
Nonmedia elements
2 Kbps
1.6 Kbps
Voice
Default = RTAudio Wideband
62 Kbps
39 Kbps
Conference voice
Default = G.722
100.6 Kbps
46.1 Kbps
Video – small
Uses H.264 at 320x180
250 Kbps
200 Kbps
Video – medium
Uses H.264 at 640x480
800 Kbps
640 Kbps
Video – high
Uses H.264 at 1280x1080
4 Mbps
3.2 Mbps

20. Maximum bandwidth (Kbps) Typical bandwidth (Kbps)
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05: Usage and Traffic Modeling
Audio Codec Bandwidth
Audio codec
Scenarios
Maximum bandwidth (Kbps)
Typical bandwidth (Kbps)
RTAudio Wideband
Peer-to-peer, default codec 62
39.8
RTAudio Narrowband
Peer-to-peer, PSTN
44.8
30.9
G.722
Default conferencing codec
100.6
46.1
G.722 Stereo
Peer-to-peer, Conferencing
159
73.1
G.711
PSTN 97
64.8
Siren
Conferencing
52.6
25.5

21. Video Codec Bandwidth Required bandwidth depends on:
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05: Usage and Traffic Modeling
Video Codec Bandwidth
Required bandwidth depends on:
Resolution
Quality
Frame rate
There are three bit rates for each resolution:
Maximum payload bit rate
Minimum payload bit rate
Typical bit rate

22. Video Resolution Bandwidth
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05: Usage and Traffic Modeling
Video Resolution Bandwidth
Video codec
Resolution and aspect ratio
Maximum video payload bit rate (Kbps)
Minimum video payload bit rate (Kbps)
Typical bit rate (Kbps)
H.264
320x180 (16:9)
212x160 (4:3)
250 15
200
H.264/RTVideo
424x240 (16:9))
320x240 (4:3
350
100
280
480x270 (16:9)
424x320 (4:3)
450
640x360 (16:9)
640x480 (4:3)
800
300
640
848x480 (16:9)
1500
400
1200
960x540 (16:9)
2000
500
1600
1280x720 (16:9)
2500
700
1920x1080 (16:9)
4000
3200
960x144 (20:3)
1280x192 (20:3)
1000
1920x288 (20:3)

23. Endpoints Endpoints do not stream audio or video packets continuously.
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05: Usage and Traffic Modeling
Endpoints
Endpoints do not stream audio or video packets continuously.
Scenarios:
Peer-to-peer:
Endpoints send audio streams only when users speak
Both participants receive audio streams
Both endpoints send and receive video streams during the entire call if video is used
Video scenes with little or no movement may temporarily have a low actual bit rate because the video codec skips encoding regions of the video with no changes
Conferencing:
All participants receive audio streams
All participants can receive up to five video streams and 1 panoramic video stream if video is used

24. Lync Bandwidth Calculator

25. Lync Bandwidth Calculator
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05: Usage and Traffic Modeling
Lync Bandwidth Calculator
Demonstration: Erlang Calculator

26. Lync Bandwidth Calculation Overview
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05: Usage and Traffic Modeling
Lync Bandwidth Calculation Overview
…and Grey = formulas or results (locked cells)
Green
Yellow
Red
Do not forget that:
Green = Required user entry
Yellow = Can be modified from the defaults
Red = Cannot be modified

27. Defining Personas in the Lync Bandwidth Calculator
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05: Usage and Traffic Modeling
Defining Personas in the Lync Bandwidth Calculator
Site users:
Must be grouped based on ”Personas”
Up to three persona types can be selected individually in each site

28. Sites 20335 05: Usage and Traffic Modeling
The WAN link columns are discussed in the next topic.

29. Central Sites Where Lync Front-End pools will be located:
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05: Usage and Traffic Modeling
Central Sites
Where Lync Front-End pools will be located:
If the Lync deployment has mulitiple distributed Lync Front-End pools, then enter multiple Central sites (unless all Front-End pools are in the same network site)
WAN links must be defined:
“WAN link speed” is the total size of the connection to the MPLS WAN cloud
“WAN link BW Allocated to RTC traffic” is how much bandwidth the customer wants to allow for Lync RTC:
Typically this should be assumed as 30% of WAN link (industry-standard for RTC traffic on the WAN links)
Global “Red flag” threshold is set to this value, but it can be defined to a level expected by the customer

30. Branch Sites Are sites with Lync users only:
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05: Usage and Traffic Modeling
Branch Sites
Are sites with Lync users only:
Each Branch site must be associated with a Central site
If many similar branches, one row can summarize them
Might have local PSTN gateways:
If so, then select ”Local PSTN Breakout” = Yes (with Media Bypass on, or when Mediation server is also in the branch, adjacant to the voice gateway)
If not, than set “Use G711 for PSTN Calls over WAN?” correctly

31. Bandwidth Modeling Results for Sites
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Bandwidth Modeling Results for Sites
Individual results – WAN link consumption split per modality:
Inter-site traffic only
Traffic of users located in this site only
Traffic of remote users considered as necessary

32. Aggregated Results: Table 1
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05: Usage and Traffic Modeling
Aggregated Results: Table 1
Table 1: WAN traffic aggregated in each Central site:
Split by Lync modality
Totals (WAN and Lync RTC) with limit/threshold checks
Audio/video/conferencing total

33. Aggregated Results: Table 2
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05: Usage and Traffic Modeling
Aggregated Results: Table 2
Table 2: Internet traffic of remote users, aggregated in each Internet site:
Split by Lync modality
Totals with limit/threshold checks

34. Graphical Results Lync RTC bandwidth requirements and availability:
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Graphical Results
Lync RTC bandwidth requirements and availability:
Helps to quickly identify which sites might be lacking bandwidth for Lync
Can choose which sites are to be graphed
Focus on Lync RTC bandwidth requirements and availability:
Helps to quickly identify which sites might be lacking bandwidth for Lync RTC traffic.
Useful for creating executive-level reports in a network assessment final report.
You can choose the results from the sites that are to be graphed.

35. 20335
05: Usage and Traffic Modeling
Deployment Readiness
A summary of sites that may require a WAN upgrade before they can carry the estimated volume of Lync RTC traffic
Focus on Lync RTC bandwidth requirements and availability:
Overall look at the whole Lync deployment.
Useful for creating executive-level reports in a network assessment final report.
RTC with or without video.

36. Define QoS Traffic Classification
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05: Usage and Traffic Modeling
Define QoS Traffic Classification
Use the Lync Bandwidth Calculator to:
Define Quality of Service (QoS) traffic classification
An example of an advanced task
RESULT

37. Erlang Calculator Calculations:
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05: Usage and Traffic Modeling
Erlang Calculator
Calculations:
One Erlang equals one continuous call for 3600 seconds (the number of seconds in one hour)
To determine the number of Erlangs:
Multiply the number of calls during the busy hour (B) times the average call length in seconds (L), and then divide by 3600: Erlangs = (B*L)/3600

38. DEMO: Lync Bandwidth Calculator

39. What We Learned – Module 1: Microsoft Dynamics GP Overview
Understand some of the key functionality available in Microsoft Dynamics GP How transactions flow and integration occurs within the application Identify options for user’s to personalize how the product works Understand basic security options in Microsoft Dynamics GP