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Function 1: System parameters IVX S-Class Administrator’s Manual
B.2
Function 14: System clock
Function 141: Set time/date
1. Enter a new time in a twelve-hour format.
Example: Enter 1 2 3 3 for 12:33, or 3 1 5 for 3:15 (note that you need no leading zero for the time).
2. Select AM or PM by pressing a scroll key (either
or
).
3. Enter a new date in an eight-digit format, including leading zeroes.
Example: Enter 0 7 0 4 2 0 0 6 for July 4, 2006 (note that leading zeroes are required here, unlike
in Step 1).
4. Press # to finish the entry.
Note: A built-in battery maintains the correct time and date, even in the event of a power loss.
Function 142: Automatic time setting
1: Synchronize with CID
This function, when enabled, synchronizes the real-time clock with Caller ID (CID) messaging:
call processing compares the time of a CID message to the system real-time clock and, if the
difference is more than two minutes, resets the real-time clock to match the time (hours and
minutes) of the CID message. The system will analyze each such message (or — if it receives
more than four calls with CID information within a one-minute period — as is needed). Select
ENABLE or DISABLE by pressing a scroll key (either
or
). Choosing ENABLE will allow
the CID data to update the time and date.
Default: Enabled.
2: Adjust for Daylight Saving Time
This function, when enabled, causes the real-time clock to adjust itself automatically for
Daylight Saving Time (DST). Select AUTO or DISABLE for DST by pressing a scroll key (either
or
). Choosing DISABLE is best for those areas that don’t observe DST.
Default: Disabled.
Note: If this function is enabled and it causes an automatic time change, the system won’t update
the real-time clock from Caller ID messages (Function 1421, above) for 25 hours before and
25 hours after the time change is due to be effective (i.e., 2:00 AM Sunday).
Function 143: Clock adjustment
This function lets the Installer or Administrator have the system automatically compensate for a
clock that’s running too fast or too slow. The clock adjustment speeds up or slows down the
clock over a 30-day period by the amount selected. If the system clock is running slow, select a
positive value. If the clock is running fast, select a negative value.
Range: -2 to +5.5 minutes. Default: 0.
Example: If the clock is running two minutes fast over a month, select -2 (minus two minutes)..