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To log on using a maintenance terminal:
CTRL
1
Press
2
Press the first letter of the desired menu. Use the
selections, and press
Type the first letter
M
onitor
P
erformance
E
vent log
C
onfig
I
nventory
R
logon
H
elp
Rep
rt
O
For more information about the HDSL2 line unit maintenance
screens, refer to the H2TU-C line unit user manual. Copies of ADC line
unit user manuals can be downloaded from the ADC website at
www.adc.com. To order a hard copy, please contact your sales
representative.
L
OOPBACK
Initiate loopback testing from the maintenance menus, H2TU-R front-panel pushbutton,
H2TU-C front-panel pushbuttons, or with inband codes sent by a test set (see table below).
For more information about loopback testing, refer to the H2TU-C line unit user manual.
Network
Toward Customer
Loopback
Inband Code Description
NLOC
1111000
NREM
1110000
SMJK
11000
CREM
1111110
CLOC
1111100
Loopdown
11100
R
+
to refresh the Logon screen, if necessary.
ENTER
to change a setting or to display a menu.
To view:
A graphical representation of circuit activity and devices.
Performance history statistics (current, 25-hour, 48-hour, 31-day, and blockage
indicator) at DS1 and HDSL interfaces. Also, displays alarm status and count.
Sectionalized Event History for alarms and errors at all four legs of the DS1 signal at
the H2TU-R.
Configuration options (standard, ADC, signal generation, date and time,
master clear, factory defaults).
Product information, circuit and unit identifications.
Maintenance terminal screens at the H2TU-C.
Glossary, screen navigation keys, ADC contact information.
Downloading status and performance monitoring data to file.
T
ESTING
H2TU-C
DSX-1
NLOC
CREM
* When enabled, TLOS is an automatic loopback
that occurs with an LOS at the remote DS1 input.
Loopback Commands
DSX-1 signal is looped back to the network at the H2TU-C.
DSX-1 signal is looped back to the network at the H2TU-R.
DSX-1 signal is looped back to the network at the H2TU-R SmartJack module.
DS1 signal from customer is looped back to the customer at the H2TU-C.
DS1 signal from customer is looped back to the customer at the H2TU-R.
Deactivates any of the above loopbacks.
SPACEBAR
H2TU-R
HDSL2
NREM
SMJK
TLOS*
to cycle through menu
DS1
Customer
CLOC
Premises
Toward Network
H0025-B
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