207.2 Alarm Groups

Peripheral SWU alarms (up to 32; alarm nos. 0 to 31) are used to indicate faults in the SWU periphery. So-called ’aggregate’ alarms cover faults in in all terminals/trunks of specific devices types, e.g. all CO trunks, all tie trunks, all special equipment (APSE), all voice functions, etc.
By default, peripheral SWU alarms are preset by the system. The AMO VADSU can only be used to change threshold values and validation times
DEACT
100
DEACT
90
Directional alarms (up to 512; alarm nos. 8 to 519) are used to indicate faults in trunk groups consisting of tie trunks, special equipment (APSE) or call charge lines. This means that all trunks of this type (which can be identified by the the fact that they have been set up with a "PEN") can be grouped together by setting up a directional alarm with the AMO VADSU. A single trunk, several trunks, a trunk group configured by the AMO BUEND or an individual group of trunks can be grouped together under one alarm type.
The AMO VADSU can be used to specify threshold values, validation times, priority, HW contact and alarm names.
The AMOs TACSU, TDCSU and TSCSU are used to assign the directional alarm numbers configured by means of the AMO VADSU to "PENs". Since V2.0 it is also possible to assign a directional alarm to a station number. This can be done only via a special DEP procedure.
Trunk groups and individual trunks (only ’incoming’) can also be assigned to a directional alarm, provided they have not been assigned to alarm number 1 or 2 (special alarms) which are used for trunk failure transfer.