With the handset “on hook” ie hung up
Press TRSF/Transfer
Dial 200 to enter customer programming mode
Enter the password 1234
Press 1 to enable customer programming
Press SPEAKER
Dial 505 to enter Date & Time mode
The display then shows the layout for the date and time as below
WMMDDYYHHMM
W = Day of week with “1” being Monday
MM = Month
DD = Date of Month
YY = Year
HH = Hour
MM = Minute
Enter the current time and date as per this layout
Ie Tuesday 29th March 2005 @ 1:32 pm is 2 03 29 05 1332
Then press TRSF to save