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To log on using a maintenance terminal:
CTRL
1
Press
2
Press the first letter of the desired menu. Use
selections, then 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 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/HDSL2 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
to change a setting or to display a menu.
H2TU-R
HDSL2
NREM
SMJK
TLOS*
to cycle through menu
DS1
Customer
CLOC
Premises
Toward Network
H0025-B
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