The Automatic Daylight Savings Time (ADST) feature allows systems of Release 1.5 or later to automatically set the system clock ahead or back one hour when Daylight Savings Time starts or ends. You can use the factory setting of "USA ADST," or choose to customize the parameters of the feature. If you select "USA ADST," the system time moves one hour ahead at 2:00 a.m. on the first Sunday in April and moves one hour back at 2:00 a.m. on the last Sunday in October.
Avaya Telephone Systems and VoIP Solutions
If you choose to customize the parameters, you must set each of the following:
- Start day
- Start week
- Start month
- Start hour
- End day
- End week
- End month
- End hour
Partner Phone System
Most Southern Hemisphere countries use Daylight Savings Time from October to April, the opposite of the Northern Hemisphere. For the Southern Hemisphere, start time is the start of Standard Time, and end time is the end of Standard Time. When you select "Southern" as the hemisphere, the system subtracts one hour from the system time at the time defined by the start parameter. The system adds one hour to the system time at the time defined by the end parameter.
If a power interruption occurs during the time when ADST is scheduled to start or end, the system adjusts to the correct time when power is restored.
MERLIN Messaging Release 2.0 or later is the only voice mail system that automatically updates the time. You must manually update any other voice mail system when ADST occurs.
If the messaging system is processing other tasks when the ADST time change occurs, the messaging clock is not updated to the new time.
If the system time changes during a call, the reported duration of that call will be incorrect.
For assistance with this feature call to speak with one of our technicians 800-429-0077