1) At extension 10 or 11 press,
Feature 0 0
Left Intercom Button
Left Intercom Button
# 1 0 3
2) Enter a new time in 24-hour notation. For example, to set the time to 3:30 PM, press
1 5 : 30
The display should read:
System Time
Data 1530
This time appears on system display phones as 3:30p
3) To exit programming, press
Feature 0 0