Figure 5-5. Ds3 Performance Parameters (Current 15 Minutes) - ADTRAN MX2800 User Manual

Chapter 5. Statistics
Severely Errored Framing Seconds (SEFS)
Number of seconds with one or more out-of-frame defects or a
detected incoming AIS.
Line Coding Violations (LCV)
Number of BPVs (bipolar violations) and EXZs (excessive zeros)
that have occurred.
Line Errored Seconds (LES)
Number of seconds in which one or more CVs or one or more LOS
(loss of signal) defects occurred.

Figure 5-5. DS3 Performance Parameters (Current 15 Minutes)

P-Bit Errored Seconds (PES)
Number of seconds with one or more PCVs (P-bit coding viola-
tions), one or more out-of-frame defects, or a detected incoming
AIS. This count is not incremented when UASs (unavailable sec-
onds) are counted.
P-Bit Severely Errored Seconds (PSES)
Number of seconds with 44 or more PCVs, one or more out-of-
frame defects, or a detected incoming AIS. This count is not incre-
mented when UASs are counted.
P-Bit Coding Violations (PCV)
Number of coding violation (CV) error events that have occurred.
61200290L1-1 MX2800 User Manual 5-5