Aastra 9143i Series Administrator's Manual page 328

IP Phone Administrator Guide
Operational Features
Configuring Time and Date Using the IP Phone UI
Use the following procedure to set a time and date, time and date format, time
zone, and daylight savings time using the IP Phone UI.
IP Phone UI
Step Action
1 Press on the phone to enter the Options List.
Set Time and Time Format:
2 Select Time and Date.
3 Select Set Time.
4 Using the keys on the keypad, enter a time to set on the IP phone.
5 Press Done to save the time you entered.
6 Select Time Format.
Valid values are 12hr and 24hr.
Note: The default Time Format is 12hr.
7 Press Change to toggle between 24hr and 12hr format.
8 Press Done to save the Time Format you selected.
Set Date and Date Format:
9 Select Set Date.
10 Using the keys on the keypad, enter a date to set on the IP phone.
11 Press Done to save the date you entered.
12 Select Date Format.
5-24 41-001160-03 Rev 00, Release 2.5