For Fongo Home Phone, you will need to lower the Baud Rate on your fax machine to 9600 kbps.
You will need to reference your fax machine's owner's manual on how to do this.
Connect your fax machine to the adapter and you should be able to use it as normal.
To receive faxes, Fongo system converts the message into a PDF and stored into your Voicemail Inbox.
You can access your Fax PDF at any time. Just log into your www.fongo.com account.