Troubleshooting guide

Section 5, User Interface Guide - UIG-525, STS-1 MUX PM Statistics
61186003L1-1D 5-69
STS-1 Alarm Condition Descriptions
Table 5-35 provides STS-1 Alarm Condition descriptions.
ES-P Errored Seconds -
Path
This parameter indicates the number of seconds with
one or more coding violations or one or more incoming
defects (SAIS-P, LOP, UNEQ-P) at the Path Layer.
SES-P Severely Errored Sec-
onds - Path
This parameter indicates the number of seconds with x
or more coding violations at the Path Layer, or a second
during which at least one or more incoming defects at
the Path Layer has occurred (Values of x vary dependent
upon the line rate and the Bit Error Rate).
UAS-P Unavailable Seconds
- Path
This parameter indicates the time in seconds that the
Path Layer has been unavailable for data delivery
Table 5-35. STS-1 Alarm Condition Descriptions
STS-1 Alarm Definition Condition Description
LOS Loss of Signal This condition indicates the unit has lost the network
receive signal.
LOF Loss of Framing This condition indicates the unit detects a framing loss
from the network.
LOP Loss of Pointer This condition indicates the unit is unable to detect a
valid pointer in the receive signal.
LOMF Loss of Multi-Frame This condition indicates the unit detects loss of H4 mul-
tiframe from the network.
AIS-L Alarm Indication Sig-
nal - Line
This condition indicates the unit is receiving a line
alarm indication signal (the section terminating equip
-
ment generates AIS-L after detecting LOS or LOF).
AIS-P Alarm Indication Sig-
nal - Path
This condition indicates the unit is receiving a line
alarm indication signal (AIS-P is defined as all ones in
bytes H1, H2, and H3 as well as all ones in the entire
STS synchronous payload envelope).
RFI-L Remote Failure Indi-
cation - Line
This condition indicates the unit is receiving a line
remote failure indication (RFI-L is declared when the
incoming line remote defect indication [RDI-L, “110” pat
-
tern in bits 6, 7, and 8 of the K2 line overhead byte] lasts
for 2.5 ±0.5 seconds.
Table 5-34. STS-1 PM Far-End Parameter Descriptions (Continued)
Parameter Definition Description