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Issue 02 -January, 10 2000 113/1363CC10875AAAA TQ BJA 02
6.3.2.4 – Functional alarms
Table 3: 9900NE functional alarms provides the list of alarms specific to the functions of the 9900NE, along with
their definition and describes the automatic internal actions to the 9900NE caused by the presence of each of
these alarms. The actions described are not necessarily controlled by the management software (they may be
controlled by the equipment itself).
The 9900NE functions, for which the “Alarm” function of the ANT board manages the alarms, are as follows:
• Time management of the 9900NE
• Synchronisation of the 9900NE
• Security
• Activation of leased line cross–connects.
Alarm name Definition Internal NE actions
Clock_missing Loss of BS internal clock used for sla-
ving PLL of the ANT board
No direct immediate impact
Priority Absence or loss of priority reference
clock for 9900NE synchronisation
Fallback to next priority clock
Synchro Desynchronisation of the PLL of the
ANT board.
No action
Unknown_mana-
ger
Intrusion of an unknown manager in the
9900NE
No impact
NT_crypt_key Intrusion of a non–declared NT in the
9900NE
Interruption of the network entry procedure
Alloc_error Impossible to allocate resources to set
up a Leased Line cross–connection, sin-
ce the Round Trip Delay minimisation
requirement cannot be respected (and
yet the number of resources required for
setting up this cross–connection are suf-
ficient => Defragmentation).
Rejection of the cross–connection set–up
request by the AMD board.