1. Lync 2014
4/11/2017
© 2014 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.

2. Technical deep-dive into Lync-Skype Video
Lync Conference 2013
4/11/2017
MEET402
Technical deep-dive into Lync-Skype Video
Carl Olivier William Looney
Principle PM Manager Sr Lead Program Manager
Microsoft Corporation
© 2013 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.

3. Scope

4. Lync 2014
4/11/2017
Scenarios
Lync-Skype Audio (v1)
Add to contact list/Block users [Lync to MSA]
Block Skype Connectivity
Instant Messages and Presence Updates
P2P Audio Call
Escalate IM session to Audio Call
Hold/Resume, Mute/UnMute, Transfer
Lync-Skype Video (v2)
Everything in v1
Make Audio + Video Calls
Reject Video for inbound calls
Escalate Audio only calls by adding video
Pause/Resume Video
© 2014 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. Demo
A Lync Skype Federation Call – with Video!

6. Architecture

7. Architecture improvements
New Skype cloud for improved call set up and control.
New gateway connects Skype cloud to Lync Online for signalling and call control.
Uses Lync’s federation access architecture that routes to both v1 and v2 clouds.
V1 connectivity will continue to exist as traffic gradually increases on V2 connectivity.

8. Connectivity v1 architecture

9. Connectivity v2 architecture

10. Call connectivity
All AV calls flow through the same federation environment set up in v1
Lync SIP/SDP signalling is terminated at the Skype Cloud edge and translated into Skype proprietary protocols and vice versa
Lync to Skype Calls
AV calls are forked internally to both v1 and v2 clients
Mediation server supports only Audio
New Lync Gateway services all v2 calls.
Skype to Lync Calls
v2 clients will route calls through v2 Skype Cloud > Lync federation environment > Lync client
v1 clients will route calls through v1 Skype Cloud > Lync federation environment > Lync client

11. Connectivity v1 call flow
TechReady 18
4/11/2017
Connectivity v1 call flow
Call initiated with connection details
Call accepted and returns connection details
Media connection is established
© 2014 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.

12. Connectivity v2 call flow
TechReady 18
4/11/2017
Connectivity v2 call flow
Call initiated with connection details
Call accepted and returns connection details
Media connection is established
© 2014 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.

13. Supported v2 Clients Platform Lync Skype Windows Desktop
Lync 2013 (upcoming CU)
Internal trial version
Windows Modern
Lync Modern (upcoming release)
Coming Soon
Mobile (Windows Phone, iOS, Android)
Coming soon
Web App
Not supported NA
MAC
Potential future support

14. Media Improvements

15. Technology improvements
Direct media connectivity between Lync and Skype clients
SILK has been ported over to Lync desktop client. Coming to other Lync clients soon.
SILK will currently only used in Lync-Skype Interop Calls
G.722 and G.711 remain on the list of common codecs
Video using H.264 SVC
Media connectivity using ICE - ICE v19 support added to Skype client
Along with STUN\TURN for NAT traversal

16. SILK Codec
Lync-Skype Connectivity v2, SILK WB with a target bit-rate of 36 kbps will be the default audio codec for Lync-Skype calls
SILK integration for Lync desktop client was released Lync 2013 CU4 update (Nov 2013).
Older clients will continue using 64kbps.

17. SILK Codec: bit-rate and MOS
Reduced bit-rate compared to G.722
Improved quality (MOS)
Codec
Scenario
Audio payload (kbps)
Audio payload + IP header (kbps)
Audio payload + IP, UDP, RTP (kbps)
Audio payload + IP, UDP, RTP + FEC (kbps)
G.722
p2p 64 80 92
156
SILK 36 52
100
Network conditions
SILK 36 kbps
G kbps
Ideal
4.42
4.31
5% random loss
4.35
4.12
5% burst loss
4.0
3.68
MOS calculated using ITU-T P.863 POLQA

18. SILK Codec: FEC Lync supports out of band FEC (PT:97, RED)
Lync Skype v1 calls did not support FEC end-to-end
Lync Skype v2 calls will use in-band FEC.

19. SILK Codec Codecs negotiated
SILK SDK available under royalty-free license for partners who wish to implement decoding tools
Payload Type
Codec
Sampling Rate
Target Bitrate
104
SILK Wideband
16k
36kbps
103
SILK Narrowband 8k
13kbps

20. TechReady 18
4/11/2017
H.264 UCConfig Modes
UCConfig Mode 0: Non‐scalable single layer AVC bitstream with  Simulcast (number of simulcast  streams >= 1). 
UCConfig Mode 1: SVC temporal scalability with hierarchical P with Simulcast (number of  simulcast streams >= 1). 
© 2014 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.

21. H.264 UC Config Mode 0
In this UCConfig Mode, one reference frame is used to  constitute the single layer bitstream. Each P frame uses the  immediate previously reconstructed frame as the reference  frame. 

22. H.264 UC Config Mode 1
If the maximum frame rate of the source is 30fps,  then Layer 0, or the base layer, has frame rate of 15fps. Layer 1, or the enhancement layer has frame rate of  15fps too. Decoding of Layer 0 and Layer 1 results in 30fps.

23. Enterprise NAT Traversal Mechanism Stun/Turn/ICE
SIP uses the source and target IP addresses to establish a session. Network Address Translation (NAT) modifies IP addresses as packets transit onto the public internet and thereby renders the INVITE invalid. STUN, TURN and ICE resolve such session/NAT issues.
Internet
Internet
Router
DMZ ❷ ❶
Edge
ICE Client
ICE Server ❸
❶ Host Candidate – Likely to fail
❷ STUN Candidate
❸ TURN Candidate – Edge Relay

24. Snooper Trace – Lync SIP Invite to Skype

25. Ensure your enterprise can federate with Skype!

26. Enabling Lync Skype Federation
If your enterprise is already configured to connect with Windows Messenger via PIC, you are already set up to federate with Skype!
Achieved by provisioning via the PIC (Public Instant Messaging Connectivity) system
Valid for both Lync Online and On-prem.
Full details at:
Same steps for both audio only federation (current GA) and future video enabled calls

27. Q & A
What do you want to know?

28. Appendix

29. Lync-Skype Connectivity V1
chat & audio
Chat & Audio
Lync-Skype Connectivity opens a new communications door for enterprises searching for inventive and differentiated opportunities for new customer acquisition, customer retention, and business-to-consumer communications.
Contacts
Skype Users with Microsoft Accounts (MSAs) can add Lync users to contact list
Lync users can add Skype MSA contacts
Sessions
Presence updates
Chats and voice calls between Skype and Lync users
Not included:
Mobile clients (Skype)
Video and group sessions
Website Button
Call
Internet
Internet
PSTN
PSTN
PSTN
T1, PRI, Analog
Router
SBC/VoIP GW
Hybrid MS
PSTN
Socks5
Proxy
T1, PRI, Analog
DMZ
Edge
Queues/IVR
Skills Groups
Routing Rules
Recording
Dashboard
Reporting
3rd Party
Contact
Center

30. Lync-Skype Connectivity V2
Chat, audio,
Video
Chat, Audio,
With version 2, we now use standard NAT traversal protocols, Signalling is encrypted with TLS and media uses sRTP directly between callers. We’ve standardized Codecs between the clients and have added Video !!
Contacts
Skype Users with MSAs can add Lync users to contact list
Lync users can add Skype MSA contacts
Sessions
Presence updates
Chats, voice (Silk) and Video (H.264) calls between Skype and Lync users
Encryption with TLS and sRTP
NAT Traversal with Stun/Turn/Ice
Not included:
Select Mobile clients (Skype)
Multi-Party Calls
Website Button
Call
Internet
Internet
PSTN
PSTN
PSTN
T1, PRI, Analog
Router
SBC/VoIP GW
Hybrid MS
T1, PRI, Analog
DMZ
Edge
Queues/IVR
Skills Groups
Routing Rules
Recording
Dashboard
Reporting
3rd Party
Contact
Center
 Declare domain
 Configure PKI
 Set policies

31. Lync Online – Lync Skype Connectivity V2
Chat, Audio,
Video
With version 2, we now use standard NAT traversal protocols, Signalling is encrypted with TLS and media uses sRTP directly between callers. We’ve standardized Codecs between the clients and have added Video !!
Contacts
Skype Users with MSAs can add Lync users to contact list
Lync users can add Skype MSA contacts
Sessions
Presence updates
Chats, voice (Silk) and Video (H.264) calls between Skype and Lync users
Encryption with TLS and sRTP
NAT Traversal with Stun/Turn/Ice
Not included:
Select Mobile clients (Skype)
Multi-Party Calls
Internet
Internet
Queues/IVR
Skills Groups
Routing Rules
Recording
Dashboard
Reporting
3rd Party
Contact
Center
PSTN
PSTN
Router
PSTN
DMZ
Chat, audio,
Video

32. Lync 2014
4/11/2017
© 2014 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.

33. Microsoft Pavilion
Demos, Speakers, Demos, Lync Room System, Experts, Demos, a Bar....and more Demos

34. ATTENDEE PARTY
Wednesday, February 19th 6:30pm-9:30pm Hakkasan, MGM Grand
Brought to you by
When it comes to Vegas nightclubs, it doesn’t get any hotter than Hakkasan. And when it comes to opportunities to connect and reasons to party, no one does it better than Lync Conference! Our attendee party has a full lineup: an open bar, awesome food, and one of the best DJs that Vegas has to offer. Don’t miss out on the fun—stop by at 6:30pm and kick off and evening to remember. Come together.

35. HANDS-ON LABS LRS You can also access labs on MyLync!
Monday, February 17
Tuesday, February 18
Wednesday, February 19
Thursday, February 20
3:00pm – 9:00pm
10:30am – 9:00pm
7:30am – 9:00pm
8:00am –1:30pm
Wednesday, February 19
8:30am – 9:45am
10:15am – 11:30am
1:00pm – 2:15pm
2:45pm – 4:00pm
4:30pm – 5:45pm
Thursday, February 20
9:00am – 10:15am
10:45am – 12:15pm
12:45pm – 2:00pm
LOCATION Pinyon 3
LOCATION Copperleaf 12
You can also access labs on MyLync!
Tuesday, February 18th 5:00pm – 7:00pm

36. MyLync allows you to create a custom experience and network with the Lync Community both online and in person.
With MyLync, you can:
Build your own personalized calendar while browsing all available sessions
View breakout session material including PPTs and Videos within 48 hours of each session
Participate in the Community and find people in your social networks who are attending and interact with speakers
Arrange meetings or social activities
Navigate the Exhibit Hall floor plan and learn more about our Sponsors
Fill out evaluations to win prizes
Log into MyLync at For MyLync support, please visit the Registration Desk.*
* Please note that adding a session to your calendar does not reserve a seat. Seating is on a first-come, first-served basis.

37. Birds of a Feather
Birds of a Feather flock together! Join daily breakfast discussions of relevant topics by sitting in the separately designated areas of the Meal Hall. Seating will be sorted in a different way for each Birds of a Feather breakfast:
Wednesday, February 19:
Where are you from?
Asia/Pacific, Eastern & Central Europe, Latin America, Middle East & Africa, US (West, Central & East) and Canada, Western Europe
Thursday, February 20:
What is your interest?
Best Practices, Business Value, Clients & Mobility, Lync Meetings and Video, Lync Online, Networking, Platform, Server & Manageability, Voice

38. Fill out evaluations to win prizes
Lync 2014
4/11/2017
Fill out evaluations to win prizes
Fill out evaluations on MyLync or MyLync Mobile.
Prizes awarded daily.
© 2014 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.

39. 4/11/ :45 AM
© 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista 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.
© 2010 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista 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.