Receiving faxes without a fax machine

https://www.fax.plus/receive-fax-online-with-a-local-or-toll-free-fax-number

https://www.efax.com/how-to/receive-faxes-online

YOU NEED MODEM WITH CROSS LAN WIRE, LOCAL PHONE NUMBER AND FAX SOFTWARE FOR PC OR LAPTOP IF AVAILABLE, YOUR PC SHOULD BE ALLWAYS ON. 

https://answers.microsoft.com/en-us/windows/forum/all/how-to-install-microsoft-fax-and-use-it/21963f6f-38c2-4401-a80f-3a5ac22e7044