MC299923: Trusted certificate authorities for Direct Routing SIP interface are changing

We’re making some changes to the Direct Routing SIP interface. Starting on February 1, 2022, the Direct Routing SIP interface will only trust certificates that are signed by Certificate Authorities (CAs) that are part of the Microsoft Trusted Root Certificate Program.

MC299923: Trusted certificate authorities for Direct Routing SIP interface are changing

How this will affect your organization

If your SBC certificate is not signed by a CA, you service may be impacted when this change takes effect. Unsupported certificates will not be accepted and you will lose PSTN connectivity via Direct Routing.

Note: Make sure that your SBC certificate is signed by a CA that is part of the program and that the Extended Key Usage (EKU) extension of your certificate includes Server Authentication.

Learn more

Message ID: MC299923
Published: 24 November 2021
Updated: 24 November 2021
#UserImpact #AdminImpact
Plan For Change