Section 150-231-134
Revision 01
Page 30
13.06
Figures 15 thru 26 show the Performance
Data screens for both doubler and non
doubler applications. Both the Errored and
Unavailable Seconds for both HDSL loops and each
T-1 input are listed at 15-minute intervals over a four
hour time interval. The Span 1 screen contains data
on the two HDSL loops between the HLU and the first
doubler HDU1. Span 2 refers to the loops between the
first doubler HDU1 and the HRU for one doubler
circuits or between the first and second doublers
(HDU1 & HDU2) for two-doubler circuits. Span 3
refers to the loops between the second doubler and
the HRU for two-doubler circuits. All status screens
contain the same DS1 interface errors. Earlier & later
data , in four hour chunks, can be accessed by
entering “P” (previous) or “N” (next) respectively.
Performance data from the different spans can be
accessed by entering “S” (span). All of the counters
can be set to zero by selecting the (C)lear option from
the HLU Status Screen shown in Figure 8. Note that
since the HLU is considered the master module, this
clears all performance data screens at both the HLU
& the HRU. The dumb terminal RS-232 interface at
the HRU does not allow the counters to be cleared.
13.07
Figures 22 thru 26 show the 7-Day History
Performance Data screens for both doubler
and non doubler applications. The Errored and
Unavailable Seconds for both HDSL loops and each
of the two DS1 inputs are listed for the Current and
the seven previous days. The Span 1 screen contains
data on the two HDSL loops between the HLU and the
first doubler HDU1. Span 2 refers to the loops
between the first doubler HDU1 and the HRU for one-
doubler circuits or between the first and second
doublers (HDU1 & HDU2) for two-doubler circuits.
Span 3 refers to the loops between the second
doubler and the HRU for two- doubler circuits. All
status screens contain the same DS-1 interface
errors. All of the counters can be set to zero by
selecting the (C)lear option from the HLU Status
Screen shown in Figure 8. Note that since the HLU is
considered the master module, this clears all
performance data screens at both the HLU & the
HRU. The dumb terminal RS-232 interface at the HRU
does not allow the counters to be cleared. The HLU
counters are not affected.
13.08
Figures 26 thru 28 show the Alarm History
screens for both doubler and non doubler
applications. The alarms are defined in Section 5. The
LOS and PWR system alarms are common to all
spans. Only the LOSW, ES & MARGIN are span
specific alarms. The PWR-OPEN and SHORT alarms
indicate conditions on the HLU span as measured by
the HLU. Neither PWR alarm is available on the other
spans. The First & Last columns contain the time &
date stamp of the first & last occurrence of each
alarm. The Current column shows the status of each
alarm. The Count column lists the number of times
each alarm occurred. All the data can be cleared with
the (C)lear command. The maximum non-overflowing
count is 999. The Span 1 screen concerns alarms that
occurred on the two HDSL loops between the HLU
and the first doubler HDU1. Span 2 refers to the loops
between the first doubler HDU1 and the HRU for one-
doubler circuits or between the first and second
doublers (HDU1 & HDU2) for two-doubler circuits.
Span 3 refers to the loops between the second
doubler and the HRU for two-doubler circuits.
13.09
Selection H from the main menu allows the
Circuit ID# to be set. It is limited to 24 alpha
numeric characters. It, like the system settings, is
stored in NVRAM and thus remains when power is
lost. Note that the Circuit ID# is not available at the
HRU maintenance port.
