Virtual numbers for Calls and Fax are numbers that can be used for incoming and outgoing calls as well as for receiving faxes.
By default, outgoing calls can be made to any international destination.
As for incoming calls, whether it is possible for a particular number to receive international incoming calls, you can check in the article: "How to Check if the Virtual Number Receives International Incoming Calls?".
Please note, Freezvon doesn't support sending faxes.
However, it is possible to receive faxes from any destination.