Performance History At The Hdsl2 Interface - ADC HiGain H2TU-C-202 User Manual

Monitoring System Activity and Performance
Table 16. Error Acronyms Used on the DS1 Performance History Screens
Error
Description
Acronym
CV-L Code Violation - Line
Total BPV count.
ES-L Errored Seconds - Line
Seconds with BPV ≥ 1.
SES-L Severely Errored Seconds - Line
Seconds with BPV plus EXZ ≥ 1544 or
LOS ≥ 1.
UAS-L Unavailable Seconds - Line
Seconds with LOS ≥ 1.
PDVS-L Pulse Density Violation Seconds - Line
Seconds with excessive zeros
(AMI = 16 zeros, B8ZS = 8 zeros).
ES-P Errored Seconds - Path
Seconds with SEF
FE (SF) ≥ 1.
(a) Line (L) refers to the AMI DS1 line used to transport the payload.
(b) FE is a frame bit error.
(c) Appears on H2TU-R Performance History screens.
(d) Appears on the DS1 Current Statistics screens.
(e) Path (P) refers to the total framed payload being transported between two points.
(f) Severely Errored Frame—Two or more frame bit errors occurring in a 0.75 ms interval for SF or a 3 ms interval for ESF.

Performance History at the HDSL2 Interface

The HDSL2 interface has 31-day, 48-hour, 25-hour, and current statistic screens for the H2TU-C.
Figure 19 on page 31
on page 32 are examples of 25-hour and current statistics performance history screens. Refer to
page 32 for descriptions of the kinds of errors reported on all HDSL2 performance screens. Asterisks indicate
performance monitoring from the previous day.
30
Figure 17. H2TU-C DS1 Current Statistics
(a)
(e)
(f)
, CRC (ESF), or
are examples of 31-day and 48-hour performance history screens.
Error
Description
Acronym
SES-P Severely Errored Seconds - Path
Seconds with SES, CRC (ESF) ≥ 320, or
(SF) ≥ 8 (F
(b)
FE
UAS-P Unavailable Seconds - Path
A second of unavailability based on SES-P or
AIS ≥ 1.
(c)
PRM-NE Performance Report Monitoring - Near End
The PRM registers in the ESF/FDL from CPE
indicate errors, and the signal received from the
network at the remote is error-free.
(c)
PRM-FE Performance Report Monitoring - Far End
The PRM registers in the ESF/FDL from the network
indicate errors, and the signal received from the
CPE is error-free.
(d)
B8ZSS B8ZS Monitored Seconds
Seconds with B8ZS detection when AMI option is
active.
(d)
MSEC Monitored Seconds of the current
(15-minute/1-hour/1-day) screen.
June 6, 2003
LTPH-UM-1208-01
+ F ).
T S
Figure 18
Figure 20 and Figure 21
Table 17 on
H2TU-C-202 List 7G
and