User`s guide

5-20 DL3100 User’s Guide—November 1998
5
Monitoring HSDB and HVDB Statistics
The Current HSDB Statistics and the Current HVDB Statistics Menus allow
you to view the current HSDB and HVDB performance statistics. From
these menus you can clear the menu display and reset the counters.
Two separate screens display both current and cumulative data. Current
data is deÞned as the number of errors occurring in the current 15-minute
interval. Cumulative data is deÞned as the number of errors occurring over
the past 96 hours, in 15-minute intervals (including the current interval).
Line Errored Seconds (LES) A Line Errored Second is an occurrence of one or more CVs or one
or more LOS defects within a 1-second time frame.
C-bit Errored Seconds
(CES)
An CES is an occurrence of one or more CCVs, one or more
OOFs, or detection of an incoming AIS within a 1-second time
frame.
This count is only for the SYNTRAN and C-bit Parity DS3
applications.
This gauge is not incremented when UASs are counted.
C-bit Severely Errored
Seconds (CSES)
A CSES is an occurrence of 44 or more CCVs, or one or more
OOFs, or detection of an incoming AIS within a 1-second time
frame.
This count is only for the SYNTRAN and C-bit Parity DS3
applications.
This gauge is not incremented when UASs are counted.
Line Coding Violation
(LCV) Error Event
This parameter is a count of both BPVs and EXZs that occur within
an accumulation period. An EXZ increments the LCV by one
regardless of the length of the zero string.
P-bit Coding Violation
(PCV) Error Event
For all DS3 applications, a coding violation error event is a P-bit
Parity Error event. A P-bit Parity Error event is the occurrence of a
received P-bit code on the DS3 M-frame that is not identical to the
corresponding locally-calculated code.
C-bit Coding Violation
(CCV) Error Event
For C-bit Parity and SYNTRAN DS3 applications, this is the count
of coding violations reported via the C-bits. For C-bit Parity, it is a
count of CP-bit parity errors
occurring in the accumulation interval. For SYNTRAN, it is a count
of CRC-9 errors occurring in the accumulation interval.
NOTE: If the counters have been reset in the past 24 hours, the display
will only show those occurrences since the last reset.
Table 5-3 RFC 1407 Statistics Detail (Continued)
Statistic Type Description