- RadioShack Multi-User Digital Telephone Owner's Manual
9
SETTING THE MAILBOX 
SECURITY CODES
To access each mailbox, you must en-
ter a 2-digit mailbox security code. The
security codes for Mailboxes 1, 2, 3,
and 4 are preset to 01, 02, 03, and 04,
respectively. 
Follow these steps to change a mail-
box security code.
1. Press 
PGM/DEL
. The answer indi-
cator flashes.
2. Press 
MAILBOX MODE
 within 30
seconds.
3. Press the mailbox number (1, 2, 3,
or 4) within 30 seconds.
4. Enter the old security code for that
mailbox. 
Note: 
If you enter the wrong secu-
rity code, the TAD beeps three
times. Restart the procedure at
Step 1.
5. Enter the new security code. The
TAD beeps twice, and the answer
indicator stops flashing. 
Resetting a Mailbox Security 
Code 
If you forget a mailbox security code,
you can reset each mailbox’s code to
its default (01, 02, 03, or 04).
Note:
 All messages stored in a mail-
box are deleted when you reset its se-
curity code.
Follow these steps to reset the mailbox
security code.
1. Press 
PGM/DEL
.
 The answer indi-
cator flashes.
2. Press 
MB RESET
.
3. Press the number of the mailbox
you want to reset then press it
again. The mailbox returns to its
preset security code, which shows
on the display, and the indicator
stops flashing.
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