Hello,
Yes, this API endpoint is for the call history of a single user. The system makes the link with the user via the access token (Auth). So the API endpoint will get the call history of the user who is associated/linked to the Auth access token.
If you need to retrieve calls history for multiple users, you have to use the Analytics endpoint (Conversation Query - sync, async, or job).
Regards,
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Jerome Saint-Marc
Senior Development Support Engineer
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