Hi @IBN ,
By "Phone Trial", are you referring to the Teams Phone Standard Trial license? If this is the case, you can refer to the information in this link for more about the license. If I have misunderstood anything, feel free to post back with more details.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
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.