5-4 61204659L1-1A
Section 5, Statistics MX2800 STS-1 User Manual
STS-1 Statistics
Table 5-1 describes the alarm counts provided in this history screen.
NOTE
The count given reflects the number of times the alarm or state has
occurred (rather than the number of seconds the alarm was active).
Table 5-1. STS-1 Alarm Count Descriptions
Condition Meaning Description
LOS Loss of Signal The unit has lost the network receive signal.
LOF Loss of
Framing
The unit detects a framing loss from the network.
LOP Loss of
Pointer
The unit is unable to detect a valid pointer in the receive signal.
LOMF Loss of
Multiframe
The unit detects loss of H4 multiframe from the network.
AIS-L Line Alarm
Indication
Signal
The unit is receiving a line alarm indication signal. The Section Terminating
Equipment generates AIS-L after detecting LOS or LOF.
AIS-P Path Alarm
Indication
Signal
The unit is receiving a path 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 pay-
load envelope.
RFI-L Line Remote
Failure
Indication
The unit is receiving a line remote failure indication. RFI-L is declared when the
incoming line remote defect indication (RDI-L, “110” pattern in bits 6, 7, and 8
of the K2 line overhead byte) lasts for 2.5 ± 0.5 seconds.
RFI-P Path Remote
Failure
Indication
The unit is receiving a path remote failure indication. RFI-P is declared when the
incoming path remote defect indication (RDI-P, “1” in bit 5 of the G1 path over-
head byte for contiguous frames) lasts for 2.5 ± 0.5 seconds.
SLM-P Path Signal
Level
Mismatch
The controller card is detecting a signal label mismatch. A received signal label
is mismatched if the received C2 byte does not indicate unequipped (0) or “VT
structured payload” (2).
UEQ-P Path
Unequipped
The path is unequipped if it is not provisioned. Byte C2 of the STS path overhead
is set to zero.
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