MC297438 – Updated November 12, 2021: Microsoft has updated the content below for clarity. Thank you for your feedback.
Microsoft is making some changes to Direct Routing SIP interface.
On January 3rd 2022, to provide the best-in-class encryption to Microsoft’s customers, they will begin retiring Transport Layer Security (TLS) versions 1.0 and 1.1 and begin obligating TLS1.2 usage for the Direct Routing SIP interface.
Note: If your organization has already taken steps to migrate from TLS 1.0 and 1.1, you can safely disregard this message.
How this will affect your organization:
To provide the best-in-class encryption to Microsoft’s customers, they will be retiring Transport Layer Security (TLS) versions 1.0 and 1.1 beginning January 3rd 2022 and will begin forcing TLS1.2 usage for the Direct Routing SIP interface.
What you need to do to prepare:
Review your SBCs and ensure they are configured to support TLS 1.2.
Learn more: