User's Manual

Release 15 Alarm List – continued
JAN 2002
B-9
SC300 1X BTS Hardware Installation, ATP, and FRU Procedures
DRAFT
Table B-1: List of Alarms (Software Release 15)
Alarm
#
Alarm DescriptionAlarm Name
18010/
18011
SPAN Out–of–Service
– Continuous Remote
Faults (source)/(sink)
This alarm indicates that the span is out–of–service due to continuous
remote faults being received for more than 0.5 seconds. This alarm
indicates that the transmit span line signal was lost at the remote end, or
the transmit framing words were corrupted at the remote end. 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.
18013/
18014
SPAN Degraded –
Frame Slip Daily
Threshold Exceeded
(source)/(sink)
This alarm indicates that the number of frame slips exceeded the alarm
threshold (default threshold = 4) within a 24–hour period. This alarm is
caused by the master unit in the BTS not being synchronized with the
inbound span line. 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.
18016/
18017
SPAN Degraded –
Frame Slip Hourly
Threshold Exceeded
(source)/(sink)
This alarm indicates that the number of frame slips exceeded the alarm
threshold (default threshold = 10) within a 1–hour period. This alarm is
caused by the BTS unit not being synchronized with the inbound span
line. 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.
18019/
18020
SPAN Degraded –
Frame Slip Critical
Threshold Exceeded
(source)/(sink)
This alarm indicates that the number of frame slips exceeded the alarm
threshold (default threshold = 255) within a 24–hour period. This alarm
is caused by the BTS unit not being synchronized with the inbound span
line. 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