Section 150-232-100
Revision 01
Page 39
5. SYSTEM MAINTENANCE MENU SCREENS
5.01 Figure 7 is the Maintenance Terminal MAIN MENU Screen. Its ten sub-menus provide many useful
provisioning, test and monitoring tools. Figure 8 shows the HLU-232 List 1D SPAN STATUS Screen.
5.02 Figure 9 shows the SET CLOCK menu. Both the Time and Date are set with this menu. Set the hours and
minutes, using the military (24-hour) convention. Setting the seconds is optional. Enter the date in the sequence
and format shown. List 1 HRU-412 units having software versions 6.4 and above, and all List 6, List 7 HRU-412
units can also be set to the same time and date as the HLU-232 List 1D by entering a U to the “Update Remote”
query. All time information is lost when power is removed. The last date, however, is retained in NVRAM and
reappears when power is restored.
5.03 Figure 10 shows the SYSTEM SETTINGS Screen. All 14 normal user options can be set from this screen. To
change any option, press its character key which is shown inside the parenthesis within each parameter description.
This causes the screen to refresh with the new parameter. After all parameters have been selected, press E (Exit)
then C (Confirm). The newly selected parameters are now activated.
5.04 Figure 11 shows the LOOPBACK MENU Screen for non-Doubler applications. Loopbacks NLOC, NREM,
CLOC & CREM are available.
5.05 Figure 12 shows the PERFORMANCE DATA screen for non-Doubler applications. Both the Errored and
Unavailable Seconds for both HDSL loops and each T1 input are listed at 15-minute intervals over a four hour time
interval. Earlier & later data, in four-hour chunks on six different screens, can be accessed by pressing P (Previous)
or N (Next) respectively. All of the counters can be set to zero by pressing C (Clear) from the HLU-232 List 1D
SPAN STATUS Screen shown in Figure 8. Note that since the HLU-232 List 1D is considered the master module,
this clears
all performance data screens at both the HLU-232 List 1D & the HRU-412. The RS-232 terminal interface
at the HRU-412 does not allow the counters to be cleared.
5.06 Figure 13 shows the 7-DAY PERFORMANCE HISTORY Screen. The “Errored Seconds” and “Unavailable
Seconds” for both HDSL loops and each of the two DS1 inputs are listed for the current and previous seven days.
All of the counters can be set to zero by pressing C (Clear) on the HLU-232 List 1D SPAN STATUS Screen (Figure
8). Note that since the HLU-232 List 1D is considered the master module, this clears
all performance data screens
at both the HLU-232 List 1D & the HRU-412. The RS-232 terminal interface at the HRU-412 does not allow the
counters to be cleared.
5.07 Figure 14 shows the ALARM HISTORY Screen for non-Doubler applications. The alarms are defined in
Section A Paragraph 4.01. The “First” and “Last” columns contain the time and date stamp of the first and 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 by pressing C (Clear). The maximum non-
overflowing count is 999. The RS-232 terminal interface at the HRU-412 does not allow the data to be cleared.
5.08 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-412 Maintenance Port.
5.09 Selections I and J on the Primary Line Unit’s Main Menu (Figure 7) allow setting BER Threshold and BER
Measurement Interval as described in Section A, subsection 6.
5.10 Selection I of the Protection Line Unit’s Main Menu (Figure 15) causes the Protection Switching Function Menu
(Figure 16) to be displayed. From this menu, the Protection Mode, Minimum Hold-In Time, BER Threshold, BER
Interval, and Lock-In parameters can be set, as described in Section A, subsection 6. Select A, to view the
Protection Mode Menu (Figure 17).
5.11 Selection J on the Protection Line Unit’s Main Menu (Figure 15) provides a switchover event history (Figure
18), lists each Protection Switch event type, the date and time of both the oldest and the most recent event, the total
number of occurrences and reason for last switchover.
5.12 For Protection Switching applications, ESAL (Errored Seconds Alarm) should be disabled.
