178 SONUS - Daylight Saving / Standard Time Switchover


Interrelationships	Parameter Description
Functions of the AMO	Error Messages and Advisories

Switchover from standard time to daylight saving time (DLS) and vice versa is handled by a resident task. This task has three function-modes:

•

Automatic
the task computes the switchover-dates itself according to the directives of the European Community (EU) regarding DLS / standard time switchover (last Sunday in March and September respectively), or to the US-directives (first Sunday in April and last Sunday in October), depending on the program system loaded to the actual switch.

•

Read from file;
the task is processing the dates contained in a table situated in a file on the hard disc of the system (switchover table).
This mode is used, when the switchover dates differ from the standard valid for the region, to which the program system refers (see above).

•

Deactivated;
the task is inoperative.

Normally, no switchover table is existing in the system, the task is operating in the automatic mode.

The AMO SONUS serves to maintain the switchover table, and to adjust the function mode of the resident task.

The table can hold up to 20 switchover dates. Accordingly, the system can be preset for ten years at two switchovers a year (in function mode "read from file").

OpenScape 4000 V10, Volume 1: AMO Descriptions, Service Documentation, Issue 5, ID: P31003H31A0S107057620

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