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36 ICX (International) issued October 2000 ICX-50-700
Chapter 3. System Features Section 700 - Operation
Data Security
Description
If you are using a line for data (modem connections, etc.), Data Security makes it possible to prevent
interruptions. Data Security can be implemented for either all phone use or outside line use.
Hardware Requirements
•N/A
Considerations
•N/A
Daylight Saving Time (Summer Time)
Description
The Daylight Saving Time feature allows you to program the 576 so that it automatically adjusts the
system’s internal timeclock forward or back on specific days of the year. This time change is then
reflected on the phone’s display (Key Telephone only).
Depending on the day of the year, the system will set the time according to the following:
Hardware Requirements
•N/A
Related Programming
•N/A
Considerations
• Daylight Saving Time can only be enabled or disabled in system programming. See Section 400:
Programming for more information.
Day/Night System Mode
Description
Day/Night System Mode enables you to switch the System between two Day modes and a Night
mode. These modes determine incoming call handling, Toll Restriction Service (TRS) (Call Barring)
call handling, and attendant group support.
Day of the year System Action
Third Sunday in March System clock adds one hour to current time at 2 a.m.
Last Sunday in October System clock subtracts one hour from current time at 2 a.m.