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Remote/Alarm LED
Loopback LED
Input line configuration code LED
D 1 loss of signal LED
S
Continuity or SNR error LED
LOSW or BER error LED
Extraction handle
V
ERIFICATION
Once the LPS-H2C (hereafter referred to as the H2C) is installed, verify that it is operating
properly by monitoring the Status LEDs on the front panel (see
LED
Description
Status (STAT)
Displays results of self-test.
Red
Internal fault detected during self-test.
Yellow
Card is initializing or performing self-test.
Green
Normal operation.
Off
No power to the CO line card or blown fuse.
RMT ALM
Indicates detection of remote alarm.
Yellow
Remote alarm detected at the H2TU-R.
Off
Normal operation.
LPBK
Indicates loopback activity at H2C (H2LXC).
Yellow
Flashing: 1 flash per second when armed in intelligent loopback modes.
Steady: Active DS1 loopback at any unit in the system.
Off
Normal operation.
DS1 B8ZS
Indicates input line code configuration.
Green
Input code is provisioned for B8ZS.
Off
Input code is provisioned for AMI.
DS1 LOS/BER
Indicates loss of DS1 input signal (LOS), Bipolar Violation (BPV), or Bit Error Rate
(BER) errors at DS1 interface.
Red
LOS (DS1 receive signal is lost).
Yellow
Brief Flash: Intermittent BPV errors.
Steady: BER threshold exceeded at local DS1 interface (default is 10
Off
Normal operation.
HDSL2 CONT/SNR
Indicates loss of loop continuity or signal-to-noise ratio (SNR) errors.
Red
The HDSL2 loop has lost continuity.
Yellow
SNR exceeded threshold value at near end of local loop (default is +5 dB).
Off
Normal operation.
HDSL2 LOSW/BER
Indicates loss of HDSL2 frame synchronization (LOSW), Cyclical Redundancy Check
(CRC), or BER errors.
Red
HDSL2 LOSW detected.
Yellow
Brief Flash: HDSL2 CRC error detected.
Steady: BER threshold exceeded on HDSL2 loop, (default is 10
Flashing Green
HDSL2 activation in progress.
Green
Normal operation.
Status LED
D
S
1
H
D
S
L
2
M
O
N
Table 1. Status LED Descriptions
H2TU
B8ZS
LOS
BER
CONT
SNR
LOSW
BER
I
N
D 1 transmit/receive
S
m
onitor jacks
O
U
T
L
B
K
Loopback pushbutton
(Initiates a dual loopback at the
H2C (H2LXC). The DSX-1 signal
is looped back to the customer a
the H2C (H2LXC).
S0148-C
Table
1).
–7
)
–7
).
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