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3.70: Threshold Violations-Line
Issue 9, May 1999
FNC and FNC Customer Use Only
Vol. ll, Page 480.3-41
Maintenance and Trouble Clearing
FJTU-320-515-480
3.70
Threshold Violations-Line
The following are the definitions for the line threshold violations:
•
CVL: Coding Violation count–Line
•
ESL: Errored Second count–Line
•
SEFSL: Severely Errored Framing Second count–Line
•
SESL: Severely Errored Second count–Line
•
UASL: Unavailable Second count–Line
Table 3-68: Threshold Violations-Line (T-CVL, T-ESL, T-SESL, T-UASL)—
Transient Conditions
AID Type and
MONTYPE
Direction
Probable Cause
Suggested Corrective Action
T1
CVL
ESL
SESL
(clock and
LC1A-D1E or
LC1A-D1E2 unit
installed)
NA
Faulty or missing
external clock input
signal
• Check for problems with external timing
source.
• Check for bad clock-input cable.
T3
CVL
ESL
SESL
OC3 and EC1
CVL
ESL
SESL
UASL
OVTG
ESL
SESL
UASL
CVL
SEFSL
OC12
UASL
TRMT
• The signal input
to the shelf
contains an AIS.
• Faulty input
cable.
• Faulty signal
from subscriber.
• Faulty MC1A
plug-in unit.
• Improperly set
threshold.
• Inspect and clear alarms from the upstream
asynchronous equipment for an AIS
indication.
• Verify the proper cable connection between
the FLM 150 ADM and the DSX.
• Test subscriber input signal parameters.
• Replace the suspect MC1A unit if the PM
register count stops incrementing when the
standby unit is on line.
• Verify the proper threshold levels through
local standards. Refer to TL1 Commands
practice FJTU-320-515-274, Section 5,
Performance Monitoring Parameters, for the
minimum, maximum, and default
parameters.
Содержание FLM 150 ADM
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