ADC H2TU-C-231 Manuel D’Utilisation
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Front Panel
LTPH-UM-1109-01, Issue 1
4
January 9, 2002
H2TU-C-231 List 2
Table 1.
Front-Panel Description
Front-Panel Feature
Function
Front-panel display
Displays four-character status, provisioning, and alarm system messages. The front-panel
display illuminates when power is initially applied. To conserve power, the display only remains
on for 5 minutes. Using the MODE or SEL pushbuttons reactivates the display and restarts the
5-minute timer. Refer to
display illuminates when power is initially applied. To conserve power, the display only remains
on for 5 minutes. Using the MODE or SEL pushbuttons reactivates the display and restarts the
5-minute timer. Refer to
for a listing of the four-character messages.
MODE and SEL pushbuttons
Permits the user options to be monitored and modified without the need of a maintenance
terminal. Used to initiate all loopbacks and to display DSX-1 line parameters and line unit identity.
terminal. Used to initiate all loopbacks and to display DSX-1 line parameters and line unit identity.
Status LED
The status LED can report the following conditions:
Off
Line power is off.
Green
Normal operation.
Red
Fuse alarm.
Flashing red
HDSL2 acquisition or system alarm.
Yellow
An H2TU-C-231 Customer Remote Loopback (CREM) or a Network Local Loopback (NLOC) is in
effect.
effect.
Flashing yellow
H2TU-C-231 is in an Armed (ARM) state.
DSX-1 access jacks
BRG
Provides non-intrusive bridging jack access to (IN) and from (OUT) the HDSL2 span at the DSX-1
interface. Allows the two DS1 payloads to be monitored.
interface. Allows the two DS1 payloads to be monitored.
LINE
Provides splitting jack access to (IN) and from (OUT) the HDSL2 span at the DSX-1 interface.
Breaks the IN and OUT paths to permit test signal insertion and retrieval.
Breaks the IN and OUT paths to permit test signal insertion and retrieval.
Craft port (RS-232)
Provides bidirectional communication between the unit and an external terminal to allow
configuration and performance monitoring through the maintenance terminal screens.
configuration and performance monitoring through the maintenance terminal screens.
CLEI and ECI bar code label
Provides the human-readable Common Language Equipment Identifier (CLEI) code number and
the Equipment Catalog Item (ECI) bar code number.
the Equipment Catalog Item (ECI) bar code number.
List number
Identifies the list number of the H2TU-C-231.
Retaining latch
Retains the card in the shelf when pulled up and extracts the card from the shelf when pulled
down.
down.