Understand Microsoft Teams and Skype for Business coexistence and interoperability

Publisher

Microsoft

URL

https://learn.microsoft.com/en-us/microsoftteams/teams-and-skypeforbusiness-coexistence-and-interoperability

Published

2025-05-19

Updated

unknown

Accessed

2026-10-01

HTTP status

200

License

Microsoft Learn terms of use; no-redistribution; short excerpts and locators only

Source notes citing this source

• Because online users can only be TeamsOnly, a coexistence mode check matters for a missing dial pad mainly in hybrid tenants where the user is still homed on Skype for Business Server or was migrated incompletely. inferred in context
• In Islands mode, PSTN voice services are handled by Skype for Business rather than Teams, and Teams Phone System isn't supported in Teams. in context
• Since Skype for Business Online was retired, users homed online can only have the TeamsOnly coexistence mode, and no other mode can be assigned to them. in context
• Users still homed on Skype for Business Server on-premises can't be TeamsOnly. They can have any coexistence mode except TeamsOnly, and Islands is the default for on-premises users. in context
• In Skype for Business with Teams Collaboration mode, Teams private chat, calling and meeting scheduling are off by default, and calling stays in Skype for Business. in context

Cite this source record

APA

WarmTransfer. (2025, May 19). Understand Microsoft Teams and Skype for Business coexistence and interoperability. WarmTransfer. https://warmtransfer.net/knowledge/sources/ms-learn-teams-sfb-coexistence-interop

BibTeX

@misc{warmtransfer-ms-learn-teams-sfb-coexistence-interop,
  title  = {Understand Microsoft Teams and Skype for Business coexistence and interoperability},
  author = {{WarmTransfer}},
  year   = {2025},
  url    = {https://warmtransfer.net/knowledge/sources/ms-learn-teams-sfb-coexistence-interop},
  note   = {Microsoft, accessed 2026-10-01}
}