ServerSkype for Business

Skype for Business Server 2019 Preview

With the release of the Skype for Business Server 2019 Public Preview I thought it would be the right time to write down what we know so far about the new release.

As this point it is not the final release and Ignite is coming soon. I will update this article as the news come in.

The documentation for the preview release is already available and can be found here:

What’s deprecated

  • SQL Mirroring
  • XMPP Gateways and proxies
  • Persistent Chat
  • In-place upgrades – you must migrate side-by-side
  • Mobility Service (Mcx) – only relevant for legacy mobile clients
  • Integration with Exchange Online UM – Use Cloud Voicemail

SfB Server Standard Edition and the Director Role are still there. This has changed since the Ignite 2017 announcement.

New Features

Cloud Voicemail

Not really a new feature. It was already possible to use Cloud Voicemail with SfB Server 2015. But since Exchange 2019 has no UM role anymore, customers are forced to use Cloud voicemail.

  • Works with Exchange Server and Online mailboxes
  • Requires SfB Hybrid setup
  • SfB Server 2019 still works with Exchange 2013/2016 Exchange UM
  • If you are using Exchange UM and are planning to upgrade to Exchange 2019: Upgrade SfB server first then the mailbox.









Cloud Auto Attendant

Not really a new feature. It was already possible to use Cloud Auto Attendant with users hosted on SfB Server 2015. This functionality (AA) was located in Exchange UM and therefore this is the replacement of the functionality („Virtual receptionist“)

No Docs article yet for further details.

Call Data Connector

The On-Prem call analytics data – Quality of Experience (QoE) and Call Detail Recording (CDR) –  is send to an Office 365 service to leverage Call Analytics (CA) and Call Quality Dashboard (CQD) in Office 365 as shown in the diagram. This gives you the „single pane of glass“ for server and online call analytics data. It is also possible that the analytics data remains on-prem for 3rd party analytics products.









Migration to Teams

The Migration for SfB server users to Teams will be simplified. No details out there yet on Docs.

Changed requirements

  • Hardware: Front End and Backend Server requires now 64 GB RAM
  • OS: Windows Server 2016 only
  • SQL Backend: Microsoft SQL Server 2016/2017 Enterprise (64-bit edition) only


Upgrading to SfB Server 2019 is a side by side migration since in place upgrades are no longer supported.

Notes from the field

  • Silverlight is currently still there
  • SFB 2019 Client is essentially the same as the current SfB 2016 C2R client
  • Cloud Voicemail does not require a license for the user. It requires at least one user on the correlant tenant with an Skype for Business Plan 2 or Teams license (activates the service in O365). Read the article from Mark Vale to get more details.






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