102 FUNSU - System Switches in the switching unit

The AMO FUNSU processes jobs for the RTO (Routine Test Organisation) of the SWU for
Table 21
AM (administration and maintenance) start authorization for the RTO of a unit (CC or LTG);
FA (fault analysis) start authorization for the RTO of a unit (CC or LTG);
Sporadic errors cause a hardware reset of the LTUC . This subsequently causes the shelf concerned to go out of service. This operation failure is not reported to the dependability system, so that the latter cannot respond appropriately. Only when the microprocessor is tested by the RTO the LTUC is put back into service. The test cycle of the RTO microprocessor tests has thus been stepped up so that a failure of the LTUC microprocessor is detected as rapidly as possible.
The action SET is used to set the tests to be carried out by the RTO. However, the changes made by the action SET will only become active after the action EXEC has been called to execute the changes.
The loadware is loaded into the LTG RAM during the first system boot and saved there for restarts.
To allow loadware to be exchanged selectively by plugging in and pulling out boards, the central peripheral initialization task (PIT ) defines an SW switch which, if set, causes the LW to be loaded from the hard disc when a board is plugged in or an LTG HR occurs.