Additional features, settings, or issues not covered by specific Microsoft Teams categories
What do you mean the originating Caller ID?
In general, you could edit caller ID policy in Microsoft Teams admin center > Voice. Modify “Replace the caller ID with” or “Replace the caller ID with this service number”. For more details, please refer to this article.
If the response is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.