Hi @Iniobong Nkanga
Does this issue only affect the particular user?
Is there any error message when this occurs?
You might experience various issues when you use Direct Routing to make outbound calls from a Microsoft Teams client to a Session Border Controller (SBC). These issues include the following:
- An incorrect caller ID is displayed to the call recipient.
- A connection to the SBC is not established.
- Some users in a tenant are unable to make calls.
- No users in a tenant are able to make calls.
For questions about outbound direct routing and SBC connectivity, you can refer to these two documents. In addition, you can run the following self-diagnosis to troubleshoot Direct Routing issues.
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