There is no difference in installing a fax machine at home and in office. You can either order a separate line for fax or add distinct ring tone feature to your current phone line, depending on the frequency and volume of fax received/sent at home. The distinct ring feature will get you a new phone number but it still shares the same phone line with your current exisiting number. Set up your fax machine to recognize the distinct tone(short-short-long or long-long-long etc) and then the fax machine will kick it in when somebody sends you fax through the new number.