SYSTEM MESSAGES MAINTENANCE
Ed. 044/24 Réf. 3EH 21000 BSAA
53 ALARM DETECTED ON A
PRIMARY ACCESS
Board lo-
cation.
Access
marker
INFO 0 = XX: type of alarm
- 00: Level 1 synchronized; all sys-
tems go.
- 01: Synchronization loss in "multi-
ple frame" mode (synchronization
in "double-frame" mode is correct).
- 02: No multiple frames; T2 auto-
matically starts "double-frame"
mode.
- 04: Remote Frame Alarm.
- 05: Synchronization loss in "dou-
ble-frame" mode.
- 06: Alarm Indication Signal; se-
quence of "1"s received, interface
not synchronized.
- 07: Loss of Frame Alignment (oc-
curs when the cable is disconnec-
ted).
- 08: Temporary clock lag; synchro-
nization established.
- 09: Error rate; number of error
frames > 5 in 1 second.
- 10: Erroneous frames received in
the checksum (CRC).
- 11: The network emits this alarm
when the FALC sends erroneous
frames in the CRC.
Ensure
that the
alarm di-
sappears.
If the fault
recurs fre-
quently,
check the
connec-
tion to the
public
network.
54 EXTERNAL FAULT ON S0
External problem detected
on an S0 access following
release message giving cau-
se as "deactivation of level
1"
Board lo-
cation.
Access
marker
55 INTERNAL FAULT ON S0
Internal problem detected
on an S0 access following
release message giving cau-
se as "deactivation of level
1"
Board lo-
cation.
Access
marker
If the fault
keeps re-
curring,
check the
bus wi-
ring.
TYPE MESSAGE LOCA-
TION
ADDITIONAL INFORMATION ACTION
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