Can be performed from any display telephone. The phone must be left on-hook and idle.

Detailed explanation of programming:

1. Press #20
2. Enter programming security code (default is 1234)
3. Press 1 to open programming.
4. Press #.
5. Press #55.
6. Enter date in format YY MM DD W HH MM where:
   YY=2 digit year, i.e. 02
   MM=2 digit month, i.e. 06
   DD=2 digit day, i.e. 03
   W=single digit date of week with 1=MON, 2=TUE, etc.
   HH=hour of day in 24 hour format, i.e., 8AM=08, 2PM=14, 8PM=20
   MM=minutes
7. Press #.

Date and time settings are now updated.

Abbreviated instructions:

1. Dial # 20 1234 1 #
2. Dial # 55
3. Enter date YYMMDDWHHMM
4. Press #

Example: to set the date and time for Mon, 6/03/02 4:35PM:

1. #20 1234 1 #
2. # 55
3. 02060311635#