Guardian Telecom Inc.
Installation and Operation
DTT-50 & DTT-60 Telephones
Page 12
D. Programming Access Codes:
If the selected register is 50 or 69, it is a four digit Programming Access Code register.
If desired enter a new pass code to replace the previous code. The pass code has to be four
characters long. The numeric keys, the ‘*’ and the ‘#’ are valid keys for pass code.
a. Use the [MR] key to accept the new code. A second prompt will be shown with the
newly entered pass code. Check and compare the pass code on the LCD display to
the pass code on the programming sheet. Press the [MR] key again to store the new
code to the non-volatile memory. A beep tone will be heard and the store message will
be shown on LCD for one second. The LCD will switch back to the main register
prompt.
b. Press the [RLS] key to cancel the newly entered pass code leaving the existing pass
code unchanged. A “Code not saved!” message will be shown for one second and the
display will switch back to the main register prompt.
Note:
For convenience the DTT telephone has two Access Code registers either one of which
will allow entry to programming mode. If the Access Codes are to be replaced, they
should be changed one at a time. Confirm the new code by using it to get into the
programming mode. If the new code does not work, use the other Access Code to restore
the code that was previously changed.
Always use the Programming Sheet to record the Access Codes.
If both Access Codes are forgotten the phone has to be sent back to Guardian Telecom
Inc. or an authorized service center for the Access Codes to be restored.
E. Configuration Codes:
If the selected register is within the range 51 to 68, it is a one digit Configuration Code register.
Use the Programming Sheet as a guide to select the settings. Enter the new code to replace the
previous setting.
a. Use the [MR] key to store the setting to the non-volatile memory. A beep tone will be
heard and the store message will be shown on the display for one second. The LCD
will then switch back to the main register prompt.
b. Use the [RLS] key to cancel the entry leaving the previous Configuration Code
unchanged. The display will switch back to the main register prompt.
F. Default Settings:
When register 51 is set at ‘2’ all the configuration codes and the Pass Codes will remain
unchanged while the phone is still in the Programming Mode. Once the phone goes from on
hook to off hook again all the Configuration codes and the Pass Codes will be reset to the default
settings and register 51 will be reset to ‘1’. The phone number registers will remain unchanged.
G. Exiting Programming Mode:
Press and hold the [PROG] key to exit programming mode. The exit programming message will
be shown and the phone will go back to on hook.
