Brother MFC-9970CDW Basic User's Manual page 53

Changing the Remote Codes
The preset Remote Activation Code is l51
(l91 for New Zealand). The preset Remote
Deactivation Code is #51 (#91 for
New Zealand). If you are always
disconnected when accessing your External
TAD, try changing the three-digit remote
codes, for example ### and 555.
a
Press MENU.
b
Press a or b to display Fax.
Press Fax.
c
Press a or b to display
Setup Receive.
Press Setup Receive.
d
Press a or b to display Remote Codes.
Press Remote Codes.
e
Press On or Off.
f
If you chose On in step e, enter the new
Remote Activation Code.
Press OK.
g
Enter the new Remote Deactivation
Code.
Press OK.
h
Press Stop/Exit.
Telephone and external devices
6
6
45