System information

FCD 901 48
Issue R2A, 07.2009
XMP1 Release 5.5 System Description
Rerouting at Alarms
Aastra Proprietary Information Page 6-81
Note: With a single user system "rerouting" must be carried out
manually
Multi user system
For a multi user system it is possible to configure that the „Reroute on
Alarms function can be carried out automatically. The configuration will be
done via the “Tree View” -> "Areas" -> "Rerouting on Alarms Service" menu.
Prerequisites
Carrying out the "Rerouting on Alarms" function automatically a service is
used. This service can be started either manually or automatically.
If the service starts up, in the "SOXServer" mask a user will be added in the
"Client and Exclusive Access" table.
Trunks and circuits which shall be taken into account for „Rerouting on
Alarms“ must be configured as „Eligible for Rerouting on Alarms”.
The system is ready to perform the „Rerouting on Alarms“ function if these
prerequisites are fulfilled.
The system starts with a analysis after the appearence of an alarm on a
Trunk which is configured for "Rerouting".
With this analysis on all levels (HigherOrder, Lower Order) the faulty Trunks
will be determined. Depending on the faulty Trunks the affected Circuits will
be determined.
Note: Network elements which are locked by other users will not
be taken into account for the analysis.
Now the system finds out a new way for the circuits.
The new way will be
found out with the following criterias.
1. Costs - The path to the destination causing the lowest costs is
determined.
2. Similar ways; this is the way which is similarly to the previously way
and thus less reconfiguration must be performed.
3. Bottlenecks - The path with the lowest number of bottlenecks is
identified, i.e. the higher the number of trunks between the nodes, the
higher the probability that one of these trunks will be used.
4. Trunk filling - The trunks are always filled up to their maximum time slot
usage before an empty trunk will be used.
The connections concerned are then rerouted on the new way. The
rerouting of the connections will be carried out in the following order:
1. Circuits with the highest Routing priority
2. nx64 kbit/s circuits
3. single 64 kbit/s circuits