Front-Panel Description - ADC Campus-RS Remote User Manual

Front Panel
Front-panel Feature
List number
Alarm (ALM) LED
Steady red Indicates a Loss of Signal (LOS) condition at the T1 input of the H2TU-R-402.
Blinking Indicates an LOS condition at the T1 input of the H2TU-C line unit.
Loop LED
Steady green Indicates HDSL2 loop is in sync.
Blinking once
per second
Blinking 4 times
per second
Blinking 10 times
per second
DS1 Framing LEDs (ESF and SF) Indicates framing patterns. If DS1 signals are not detected, the ESF and SF LEDs will not light.
ESF LED = Steady green Indicates Extended Super Frame (ESF). The LED blinks once per second when a frame error
SF LED = Steady green Indicates Super Frame (SF). The LED blinks once per second when a frame error occurs.
DS1 Line Code LEDs (B8ZS and
AMI)
B8ZS LED =Steady green Indicates that the DS1 line code option is set to Bipolar with 8-Zero Substitution (B8ZS). The LED
AMI LED = Steady green Indicates that the user DS1 line code option is set to Alternate Mark Inversion (AMI). This LED
Loopback (LPBK) LED
Steady yellow Indicates Network Remote (NREM) loopback, SmartJack (SMJK) loopback, or Transmit Loss of
Blinking once
per second
Blinking 4 times per second Indicates the H2TU-R is in an Armed state.
Loopback pushbutton
Sealing current (SCURR) switch
DS1 bridging (BRG) jacks
Craft port (RS-232)
CLEI and ECI bar code label
Configuration number
Extraction handle
4
Table 1. Front-Panel Description
Function
Identifies the list number of the H2TU-R-402.
Shows alarm states for remote and local Loss of Signal (LOS).
Displays HDSL2 Loop condition.
Indicates the HDSL2 loop is trying to acquire sync.
Indicates a margin alarm condition on the HDSL2 loop.
Indicates a Cyclic Redundancy Check (CRC) error on the HDSL2 loop.
OFF Indicates no activity on the HDSL2 loop.
occurs.
OFF Indicates unframed or no signal.
Indicates DS1 code options. If DS1 signals are not detected, the ESF, SF, B8ZS, and AMI LEDs
will not light.
blinks once per second when a string of excessive zeros is detected.
blinks once per second when a Bipolar Violation (BPV) is detected.
Shows loopback states to and from the network and to and from the Customer Interface (CI).
Signal (TLOS) loopback.
Indicates Customer Local Loopback (CLOC) loopback state.
Activates or deactivates a dual loopback (NREM and CLOC) at the H2TU-R when the button is
depressed for more than five (5) seconds.
Enables sealing current option when H2TU-R is locally powered.
Provides non-intrusive bridging jack access to (OUT) and from (IN) the HDSL2 span at the DS1
interface. Allows the DS1 payload to be monitored.
Provides bidirectional communication between the unit and an external terminal to allow
configuration and performance monitoring through the maintenance terminal screens.
Provides the human-readable Common Language Equipment Identifier (CLEI) code number and
the Equipment Catalog Item (ECI) bar code number.
The configuration number identifies the version of the product. New configuration numbers
usually accompany changes in the last two characters of the CLEI code.
The configuration number is found on a small label attached to the PC board. It can also be found
as the last two numbers (following the x) of the 13-character part number label affixed to the PC
board. For example: 150-1234-01-x01.
Used to remove the H2TU-R-402 from its card slot.
June 16, 2000
152-402-145-02, Issue 2
H2TU-R-402