Thank you for posting this in Microsoft Q&A.
I understand you want to change the Microsoft authentication method from receiving a text message (SMS) to receiving a phone call.
Yes, you can set up a phone call as your verification method if your organization allows you to use this option for verification. If you don't see a phone option, it's possible that your organization doesn't allow you to use this option for verification. In this case, you'll need to choose another method or contact your organization's help desk for further assistance.
To set up phone calls follow these steps:
1.Sign in to your work or school account and then go to your My Account
2.Select Security info from the left navigation pane or from the link in the Security info block, and then select Add method from the Security info page.
3.On the Add a method page, select Phone, and then select Add.
4.On the Phone page, type the phone number for your mobile device, choose Call me, and then select Next.
5.Answer the verification phone call, sent to the phone number you entered, and follow the instructions.
Your security info is updated, and you can use phone calls to verify your identity when using two-step verification or password reset. If you want to make phone calls your default method, see the Change your default security info method section of this article.
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Thanks,
Navya.
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