User's Manual

Release 15 Alarm List – continued
DRAFT
SC300 1X BTS Hardware Installation, ATP, and FRU Procedures
JAN 2002
B-10
Table B-1: List of Alarms (Software Release 15)
Alarm
#
Alarm DescriptionAlarm Name
18031/
18032
SPAN Out–of–Service
– Continuous Framed
AIS Faults
(source)/(sink)
This alarm indicates that the span is out–of–service due to continuous
Framed Alarm Indication Signal (AIS) faults being received for more than
2.5 seconds. This alarm indicates that the receive span signal was lost,
the receive framing words were corrupted, or an incompatible remote span
interface was detected by the network. This alarm will be sent by one of
the two devices at the end of the span.
In some cases, a second alarm will be sent by the device at the other end
of the span. One alarm will have “(source)” to indicate that it came
from the source end point, and the other will have “(sink)” to indicate
that it came from the sink end point.
18034/
18035
SPAN Degraded –
Unframed AIS Daily
Threshold Exceeded
(source)/(sink)
This alarm indicates that the number of Unframed Alarm Indication
Signal (AIS) alarms exceeded the alarm threshold (default threshold = 16)
within a 24–hour period. This alarm is caused by the receive span fading
in and out. This alarm condition will have an insignificant impact on
system performance and call quality. This alarm may provide an early
warning of a more serious condition. This alarm will be sent by one of the
two devices at the end of the span.
In some cases, a second alarm will be sent by the device at the other end
of the span. One alarm will have “(source)” to indicate that it came
from the source end point, and the other will have “(sink)” to indicate
that it came from the sink end point.
18037/
18038
SPAN Degraded –
Unframed AIS Hourly
Threshold Exceeded
(source)/(sink)
This alarm indicates that the number of Unframed Alarm Indication
Signal (AIS) alarms exceeded the alarm threshold (default threshold = 20)
within a 1–hour period. This alarm is caused by the receive span fading
in and out. This alarm condition may have a minor impact on system
performance and call quality. This alarm may provide an early warning of
a more serious condition. This alarm will be sent by one of the two
devices at the end of the span.
In some cases, a second alarm will be sent by the device at the other end
of the span. One alarm will have “(source)” to indicate that it came
from the source end point, and the other will have “(sink)” to indicate
that it came from the sink end point.
18040/
18041
SPAN Degraded –
Unframed AIS Critical
Threshold Exceeded
(source)/(sink)
This alarm indicates that the number of Unframed Alarm Indication
Signal (AIS) alarms exceeded the alarm threshold (default threshold =
511) within a 24–hour period. This alarm indicates that system
performance and call quality is seriously degraded. This alarm will be
sent by one of the two devices at the end of the span.
In some cases, a second alarm will be sent by the device at the other end
of the span. One alarm will have “(source)” to indicate that it came
from the source end point, and the other will have “(sink)” to indicate
that it came from the sink end point.
B