Canon MX870 Series User Manual page 789

No sender info.
Rejects faxes with no caller identification.
1-touch/code unset (MX870 series), Coded dial unset (MX350 series)
Rejects faxes from the senders not registered to the speed dial codes.
Rejected numbers
Rejects faxes from the senders registered in the machine as rejected numbers.
If you select Rejected numbers, follow the procedure below to register a fax/telephone number to reject.
Select Yes when the confirmation screen is displayed.
1.
The list of rejected numbers is displayed.
Use the button to select the dial code to register, then press the
2.
Use the Numeric buttons to enter the fax/telephone number to reject, then press the
3.
button.
OK
Data entry OK. is displayed on the LCD, then the LCD returns to the screen for registering a rejected
number.
Repeat steps 2 and 3 to continue registering numbers to reject.
4.
You can register up to 10 rejected numbers.
Note
When the machine rejects reception, Reception rejected. is displayed on the LCD.
You can print the list of rejected numbers. For details, see
Faxes with no caller identification are also rejected when the setting other than No sender info. is
selected.
Registering/Editing/Deleting the Rejected Number on the TEL Number Registration Screen
You can register/edit/delete a rejected number from <<TEL number registration>>.
1.
Press the FAX button, then press the left Function button.
The FAX menu screen is displayed.
2.
TEL number registration, then press the OK button.
Select
3.
Use the button to select Rejected numbers, then press the OK button.
button.
OK
Summary of Reports and Lists .