1152700• Issue 1 • February 2001 • Section 2 Operations and Maintenance
Page 14 of 23
Table 4-1. Alarm Identifications, continued
ALARM MESSAGE
| SEVERITY |
| IMPACT |
|
|
|
|
|
|
|
|
| DESCRIPTION |
| SUGGESTED COURSE OF ACTION |
|
|
|
|
|
|
|
|
Physical Layer Convergen ce Protocol Loss of Frame
Physical Layer Convergen ce Protocol Severely Errored Framing Seconds Threshold Crossing Alert
PLCP- SEFSTca
Critical | Service |
| Affecting |
|
|
Information | Service |
al Alert | Degradation |
|
|
PLCP encoding problem at the far end, or line degradation.
PLCP severely errored frame seconds threshold crossing alert.
Check far end encoding and line levels.
The TCAs signal a problem with the integrity of the PLCP overhead in the DS3 frame. The most probable cause is a mismatch between the transmitter and the receiver. Examine the physical circuit to determine if there are any impairments.
Physical Layer Convergen ce Protocol Unavailabl
eSeconds Threshold Crossing Alert
PLCP-
UASTca
Physical Layer Convergen ce Protocol Yellow Alarm
PLCP- YellowAlar m
Information | Service |
al Alert | Degradation |
|
|
Minor | Installation |
| Error |
|
|
PLCP unavailable seconds threshold crossing alert.
PLCP yellow alarm. Remote end has detected a PLCP Loss of Frame (LOF).
An error rate of
Examine the physical circuit to determine if there are any impairments.
PLCP Yellow alarm indicates to the near end a problem with the framing in the PLCP header at the far end.Examine the physical circuit to determine if there are any impairments.
(continued)
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© 2000, ADC Telecommunications, Inc.
