Apple Fax - Manual (Page 140)

Configuring Apple Fax Gateway
You need to configure Apple Fax Gateway before you can use
fax services.
Adding fax services to your Key Chain
Before you can send and receive faxes, you must add fax
services to your Key Chain.
1 Select Key Chain from the Mail and Catalogs sub-menu in the
Apple (
 ) Menu.
The Key Chain window appears.
2 Click Add.
The Add Service dialog box appears.
3 Select Apple Fax if it is not already selected, then click OK.
127 Using Apple Fax Gateway