Lync & Skype Interop V2 Deep Dive - By Johan Delimon
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The document discusses the interoperability between Lync and Skype, detailing setup requirements, features, and enhancements for audio and video calling. It highlights Microsoft's offerings in unified communications, emphasizing the tools and capabilities to connect users globally. Additionally, it covers technical specifications and user guidance for configuring Lync and Skype connections.
![A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S
Lync & Skype Interop Enhancements
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](https://image.slidesharecdn.com/lyncskypeinterop-1-14-15-150114154816-conversion-gate01/85/Lync-Skype-Interop-V2-Deep-Dive-By-Johan-Delimon-28-320.jpg)
![A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S
Audio SDP Offers & Codecs
m=audio 51819 RTP/AVP 117 114 104 9 112 111 0 8 116 115 103 97 13 118 101
a=rtpmap:117 G722/8000/2
a=rtpmap:114 x-msrta/16000
a=rtpmap:104 SILK/16000
a=rtpmap:9 G722/8000
a=rtpmap:112 G7221/16000
a=rtpmap:111 SIREN/16000
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:116 AAL2-G726-32/8000
a=rtpmap:115 x-msrta/8000
a=rtpmap:103 SILK/8000
a=rtpmap:97 RED/8000
a=rtpmap:13 CN/8000
a=rtpmap:118 CN/16000
a=rtpmap:101 telephone-event/8000
Preference Order
Even though the actual sampling rate for G.722 audio is 16,000 Hz, the RTP clock
rate for the G722 payload format is 8,000 Hz because that value was erroneously
assigned in RFC 1890 and must remain unchanged for backward compatibility. The
octet rate or sample-pair rate is 8,000 Hz.
(4.5.2 G.722)
WidebandNarrowband
RTAudio Wideband & Narrowband
Skype Codec Wideband & Narrowband
G.711
The redundant audio payload format "RED" is specified by RFC 2198 [17]. It defines
a means by which multiple redundant copies of an audio packet may be
transmitted in a single RTP stream (4.5.16 RED)
http://tools.ietf.org/html/rfc3551 RTP Profile for Audio and Video Conferences with Minimal Control](https://image.slidesharecdn.com/lyncskypeinterop-1-14-15-150114154816-conversion-gate01/85/Lync-Skype-Interop-V2-Deep-Dive-By-Johan-Delimon-32-320.jpg)
![A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S
Lync & Skype Interop Enhancements
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](https://image.slidesharecdn.com/lyncskypeinterop-1-14-15-150114154816-conversion-gate01/85/Lync-Skype-Interop-V2-Deep-Dive-By-Johan-Delimon-37-320.jpg)
Lync & Skype Interop V2 Deep Dive - By Johan Delimon
- 1. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Johan Delimon MCM Lync Server / MVP Lync Server / MCT Ordina Belgium N.V. Johan.delimon@ordina.be @jdelimon Lync & Skype Interop V2 Deep Dive
- 2. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S @enowconsulting Find us! ENow Software ENowSoftware ENowSoftware.com “Simplest way to keep Lync healthy” Some of ENow’s Loyal Customers About ENow • Microsoft Silver ISV & Messaging • Profitable, privately-help corporation founded in 2004 • Software architected by MVPs with >15 years experience in high-end Microsoft consulting and management • Customers in over 60 countries ENow Software
- 3. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Johan Delimon MCM Lync Server / MVP Lync Server / MCT Ordina Belgium N.V. Johan.delimon@ordina.be @jdelimon Lync & Skype Interop V2 Deep Dive
- 4. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S http://www.pro-lync.be http://www.pro-exchange.be http://www.pro-lync.be http://www.pro-office365.be A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S
- 5. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Agenda Skype & Lync Interop Basics Interop Version 1 (Audio) Interop Version 2 (Video) Resources
- 6. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S
- 7. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S
- 8. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S
- 9. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Individuals Teams & Small Organizations Medium-sized & Large Organizations Specialized by need, universal by reach Connecting everyone with rich communications Microsoft provides Universal Communications: enabling any person to reach anyone, from anywhere, on any device, and in the way they choose.
- 10. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Skype Announcements in 2014 • Introducing Skype for Business • Video calling between Skype and Lync available now • Skype Translator Preview – An Exciting Journey to a New Chapter in Communication • Skype for Broadcast • Skype loves bringing groups together – with FREE group video calling • Skype group screen sharing is free • Introducing Skype document chat in Office Online • Save and share your videos with Skype Qik • Skype Brings the World Closer Together, One Inbox at a Time • Please welcome Skype for Web (Beta) http://blog.enowsoftware.com/solutions-engine/bid/187072/Skype-Lync-Part-I-Announcements
- 11. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Familiar experience and user love of Skype and the security, compliance, and control of Lync. Connecting people everywhere to achieve more, together.
- 12. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S
- 13. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Video calling between Skype and Lync available now http://blogs.office.com/2014/12/05/video-calling-skype-lync-available-now/
- 14. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S
- 15. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Setting up Lync-Skype Connectivity • Domain: – Provision your organization for federation using https://pic.lync.com, provide your domain(s) & FQDN(s). • Certificate: – Set up your Lync edge for federation, including public certificate. • Policies: – Use the Lync Server Control Panel or PowerShell to enable public IM connectivity, partner discovery, partner domain discovery. Note1: If you have Messenger connectivity working already, you’re done! Note2: There is no additional charge for activating Lync-Skype Connectivity
- 16. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Step 1. Register your domain This tells our service where to send inbound messages and tells Skype & Messenger that your Lync domain is available for connectivity. Go to https://pic.lync.com to provision your domain for Skype connectivity.
- 17. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S O365 Configuration and Admin
- 18. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Skype Privacy Skype maintains a Security Portal: http://www.skype.com/intl/en-us/security/
- 19. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Lync Settings
- 20. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Microsoft Accounts (MSAs) and Skype
- 21. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S How do I add a Lync contact to Skype? To add a Lync contact – Type the Lync user address in Skype Search – Select the Lync contact – Select <Add to Contacts> Log in with MSA
- 22. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Adding Lync User in Skype
- 23. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Skype user adds Lync user
- 24. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Add a Skype contact to Lync • Add Contact -> Add a Contact Not in My Organization • Select Skype • Type in MSA & Assign a Group
- 25. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Add a Skype contact to Lync
- 26. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Presence Expectations • Skype Presence Modes – Online – Away – Do Not Disturb – Invisible – Offline – Auto (“Show me as Away when I’ve been Inactive from <<fill-in>> minutes”) • Lync Presence Modes – Available – Away – Busy – Do Not Disturb – Be Right Back – Off Work – Appear Away
- 27. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S
- 28. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Lync & Skype Interop Enhancements 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
- 29. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Connectivity v1 call flow Lync Online – Office 365 Federation Cloud signal path media path Legend Call initiated with connection details Call accepted and returns connection details Media connection is established
- 30. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Lync-Skype Connectivity V1 Contacts MSAs) Sessions Not included: Router 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. chat&audio Chat&Audio
- 31. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S
- 32. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Audio SDP Offers & Codecs m=audio 51819 RTP/AVP 117 114 104 9 112 111 0 8 116 115 103 97 13 118 101 a=rtpmap:117 G722/8000/2 a=rtpmap:114 x-msrta/16000 a=rtpmap:104 SILK/16000 a=rtpmap:9 G722/8000 a=rtpmap:112 G7221/16000 a=rtpmap:111 SIREN/16000 a=rtpmap:0 PCMU/8000 a=rtpmap:8 PCMA/8000 a=rtpmap:116 AAL2-G726-32/8000 a=rtpmap:115 x-msrta/8000 a=rtpmap:103 SILK/8000 a=rtpmap:97 RED/8000 a=rtpmap:13 CN/8000 a=rtpmap:118 CN/16000 a=rtpmap:101 telephone-event/8000 Preference Order Even though the actual sampling rate for G.722 audio is 16,000 Hz, the RTP clock rate for the G722 payload format is 8,000 Hz because that value was erroneously assigned in RFC 1890 and must remain unchanged for backward compatibility. The octet rate or sample-pair rate is 8,000 Hz. (4.5.2 G.722) WidebandNarrowband RTAudio Wideband & Narrowband Skype Codec Wideband & Narrowband G.711 The redundant audio payload format "RED" is specified by RFC 2198 [17]. It defines a means by which multiple redundant copies of an audio packet may be transmitted in a single RTP stream (4.5.16 RED) http://tools.ietf.org/html/rfc3551 RTP Profile for Audio and Video Conferences with Minimal Control
- 33. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S User-Agent: RTCC/5.0.0.0 MediationServer User-Agent: UCCAPI/15.0.4675.1000 OC/15.0.4675.1000 (Microsoft Lync) m=audio 50804 RTP/SAVP 9 0 8 115 13 118 97 101 a=candidate:5 1 UDP 184547327 134.170.96.15 50804 typ relay raddr 134.170.96.78 rport 56924 a=candidate:5 2 UDP 184546814 134.170.96.15 50006 typ relay raddr 134.170.96.78 rport 56925 a=remote-candidates: 1 84.195.252.124 5364 2 84.195.252.124 5365 a=rtpmap:9 G722/8000 a=rtpmap:0 PCMU/8000 a=rtpmap:8 PCMA/8000 a=rtpmap:115 x-msrta/8000 From: <sip:johan.delimon@live.com>;epid=165FFA712D;tag=77e528eb To: <sip:johan@delimon.be>;epid=df8b299e1c;tag=cfe51e3b51
- 34. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S
- 35. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S G7.22 SILK
- 36. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S
- 37. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Lync & Skype Interop Enhancements 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
- 38. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Lync & Skype interop • IM, Presence & Audio in May 2013 (v1) • Video calling with Lync in December 2014 (v2) • Skype for Windows desktop client v7.0.x.100 only • Other platforms/clients coming later • Built-in security for signaling using TLS and media using SRTP • Standards-based firewall traversal using STUN, TURN and ICE • Industry standard H.264 SVC codec • SILK audio codec http://blog.enowsoftware.com/solutions-engine/bid/187073/Skype-Lync-Part-II-Video-Calling
- 39. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Enterprise NAT Traversal Mechanism Stun/Turn/ICE Router ❶ Host Candidate – Likely to fail ❷ STUN Candidate ❸ TURN Candidate – Edge Relay ❶❷ ❸ 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.
- 40. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S • TLS • SRTP • SILK • RT Audio • STUN • TURN • ICE
- 41. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Demo : Lync & Skype Call – with Video!
- 42. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Connectivity v2 call flow Lync Online – Office 365 Federation Cloud signal path media path Legend Call initiated with connection details Call accepted and returns connection details Media connection is established
- 43. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Architecture improvements • New Skype cloud for improved call set up and control. • New gateway connects Skype cloud to Lync Online for signaling 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.
- 44. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S V2 Details User-Agent: RTCC/6.0.0.0 LyncSkypeGateway2/1.0.214.0 User-Agent: UCCAPI/15.0.4667.1000 OC/15.0.4667.1000 (Microsoft Lync) From: <sip:johan.delimon@live.com>;epid=165FFA712D;tag=77e528eb To: <sip:johan@delimon.be>;epid=df8b299e1c;tag=cfe51e3b51 m=audio 24214 RTP/SAVP 114 9 112 111 0 8 116 115 97 13 118 101 a=candidate:1 1 UDP 2130706431 192.168.0.109 24214 typ host a=candidate:1 2 UDP 2130705918 192.168.0.109 24215 typ host a=remote-candidates:1 192.168.0.114 5364 2 192.168.0.114 5365 a=rtpmap:114 x-msrta/16000 a=rtpmap:9 G722/8000 a=rtpmap:112 G7221/16000 a=rtpmap:111 SIREN/16000 a=rtpmap:0 PCMU/8000 a=rtpmap:8 PCMA/8000 a=rtpmap:115 x-msrta/8000 a=rtpmap:122 X-H264UC/90000 a=rtpmap:121 x-rtvc1/90000 a=rtpmap:123 x-ulpfecuc/90000
- 45. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S SILK
- 46. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S 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
- 47. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Lync-Skype Connectivity V2 Contacts MSAs Sessions voice (SILK) Video (H.264) • Encryptionwith TLS and sRTP • NATTraversal with Stun/Turn/Ice Not included: Router 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 !! Chat,audio, Video Chat,Audio, Video
- 48. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Platform Support at GA MICROSOFT CONFIDENTIAL – INTERNAL ONLYMICROSOFT CONFIDENTIAL – INTERNAL ONLY Client v1 v2 Notes Skype Win32 yes yes Summer Skype MAC OSX yes yes Summer Skype Win Modern yes yes Future Release Skype iOS yes yes Future Release Skype Android yes yes Future Release Skype WinPhone 8 yes yes Future Release Skype Xbox yes yes Future Release Skype Outlook.com yes yes Future Release Lync 2013 CU4 yes yes Released with SILK audio codec support - (ver 15.0.4551.1005) - Windows Desktop Client Only Lync MAC yes no H.264 not supported, investigating Lync iOS yes yes Future Release Lync Android yes yes Future Release Lync WinPhone 8 yes yes Future Release Lync Win Modern yes yes Future Release Lync Web App no no Out of Scope
- 49. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Legacy Lync Clients
- 50. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Resources Microsoft Message Analyzer http://www.microsoft.com/en-us/download/details.aspx?id=44226 Skype & Lync Part I: Announcements http://blog.enowsoftware.com/solutions-engine/bid/187072/Skype-Lync-Part-I-Announcements Video calling between Skype and Lync available now http://blogs.office.com/2014/12/05/video-calling-skype-lync-available-now/ Microsoft Lync Server 2013 Debugging Tools http://www.microsoft.com/en-us/download/details.aspx?id=35453 Video calling between Skype and Lync first look & the details on a surprising Audio codec being used http://www.pro-lync.be/blogs/lync2013/archive/2014/12/05/video-calling-between-skype-and- lync-first-look-amp-the-details-on-a-surprising-codec-being-used.aspx
- 51. A W A R D W I N N I N G M O N I T O R I N G & R E P O R T I N G S O L U T I O N S Install a Free 21-Day Trial of Uniscope - Get a Free $50 Amazon Card (http://bit.ly/uniscopeoffer)
Editor's Notes
- #8: For the past 10 years, Microsoft has invested in the transformation of business, disrupting the status quo with Lync, by simplifying and unifying all of the different tools people use to communicate for work. We made Lync a core part of Office to make it easy for people to connect with others to get work done. Lync means the freedom to work anywhere. It’s like tapping someone on the shoulder to say “let’s chat” no matter where you are in the world. Colleagues meet together and make decisions in an instant and IT Professionals rest easy knowing their end-users are supported by a secure platform that they manage and control. Today, thousands of organizations, large and small, count on Lync for voice, video and conferencing.
- #9: At the same time, a decade ago, Skype broke down the distance barrier by bringing people together from all over the world. It forever changed the way people shared their lives by getting friends and family together to celebrate special moments and create extraordinary bonds. Today, Skype is so much more. It’s used by more than 300 million people for messaging, calling and sharing. It lets people and groups connect in more spontaneous ways across multiple platforms to have fun and get things done. From desktop, to mobile to TV, it’s for communicating throughout the day, every day. Skype is a universal symbol of togetherness.
- #10: 9
- #12: In the first half of 2015, the next version of Lync will become Skype for Business with a new client experience, new server release, and updates to the service in Office 365. With the best of Lync, and the best of Skype, we believe that Skype for Business will again transform the way people communicate by giving organizations reach to hundreds of millions of Skype users outside the walls of their business.
- #13: We’re really excited about how Skype for Business takes advantage of the strengths of both Skype and Lync. Our approach is all about putting people at the center of the communications experience. For example, as you can see in these screenshots, we’re adopting the familiar Skype icons for calling, adding video and ending a call. We’ve added the call monitor from Skype, which keeps an active call visible in a small window even when a user moves focus to another application. At the same time, Skype for Business keeps and improves on the all of the capabilities of Lync, including content sharing and telephony. For example, transferring a call now takes only one touch or click instead of three. We’re also making it easier to connect to people everywhere. Lync already offers instant messaging and audio calling with Skype users. Skype for Business adds video calling and access to the Skype user directory making it possible to call any Skype user on any device.