Mask customer's mobile number for their agents

Hello Team - We are working on scoping with one of the customers and they want a contact phone number masking feature in Freshdesk.

The customer doesn’t want to expose the contact’s phone number to the Agents. They want to mask the phone numbers like xxx xxx 1234, but the agent should be able to click on the Calls button and make the outbound calls without knowing the contact number.

Please let me know if we have any mechanism to support this request.