To login, go to cp.intermedia.net and click 'Voice services'. Enter your fax number and PIN and click 'LOGIN'.
Once logged in, the first page you will arrive at will display received faxes.
To send a fax, click 'Send a Fax'. Check the box for 'Fax Number' and enter the number to which you intend to send a fax. Click 'Choose File' to attach the document you are faxing. All other fields may be filled in, but are optional. When you are ready to send, click 'Send'.