ADC HDSL4 user manual Front-Panel Description, Front-Panel Feature Function, Brg, Line

Front PanelLTPH-UM-1031-03, Issue 3

	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 Table 2 on page 5 for a listing of the four-character messages.
List number	Identifies the list number of the H4TU-C-319.
MODE and SEL pushbuttons	Permits user options to be monitored and modified without the need of a maintenance terminal.
	Used to initiate all HDSL4 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	HDSL4 acquisition or system alarm.
Yellow	An H4TU-C-319 Customer Remote Loopback (CREM) or a Network Local Loopback (NLOC) is in
	effect.
Flashing yellow	H4TU-C-319 is in an Armed (ARM) state.
Card handle	Provides the human-readable Common Language Equipment Identifier (CLEI) code number and
	the Equipment Catalog Item (ECI) bar code number.
DSX-1 access jacks
BRG	Provides non-intrusive bridging jack access to (IN) and from (OUT) the HDSL4 span at the DSX-1
	interface. Allows the two DS1 payloads to be monitored.
LINE	Provides splitting jack access to (IN) and from (OUT) the HDSL4 span at the DSX-1 interface.
	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.

4 September 12, 2003 H4TU-C-319 List 1