MC307310 - sip-all FQDNs will not be supported starting March 1st, 2022

Microsoft Message Center

Message Summary

 

We're making some changes to Teams Direct Routing

On March 1, 2022, we will be removing support for sip-all.pstnhub.microsoft.com and sip-all.pstnhub.gov.teams.microsoft.us FQDNs from Direct Routing configuration.

Note: If you aren't using Session Border Controllers you can safely disregard this message.

How this will affect your organization:

When this change is implemented, if no actions taken and sip-all FQDN is used, users will no longer be able to make or receive calls via Direct Routing.

What you need to do to prepare:

Customers will need to use the recommended subnets (52.112.0.0/14 and 52.120.0.0/14) for any classification or ACL rules and discontinue using the sip-all FQDN when configuring Session Border Controls for the Direct Routing.

Learn more:

• Plan Direct Routing