If you subscribe to a caller ID service through your phone provider, you can block specific fax numbers so the printer does not print faxes received from those numbers. When an incoming fax call is received, the printer compares the number to the list of junk fax numbers to determine if the call should be blocked. If the number matches a number in the blocked fax numbers list, the fax is not printed. (The maximum number of fax numbers you can block varies by model.)
Note 1
This feature is not supported in all countries/regions. If it is not supported in your country/region, Junk Fax Blocker does not appear in the Fax Options or Fax Settings menu.
Note 2
If no phone numbers are added in the Caller ID list, it is assumed that you are not subscribed to a Caller ID service.