V
ERIFICATION
Once the LPS-H4TU-C-L5 is installed, verify that it is operating properly by monitoring
the Status LEDs on the front panel.
LED
STAT
Yellow Module is initializing or performing self-test diagnostics.
Green Normal operation.
RMT ALM
Yellow Remote alarm detected at the H4D or H4TU-R-402-5A unit.
LBK
Yellow Flashing: 1 flash per second when intelligent loopbacks are Armed.
DS1 B8ZS
Green Input code is provisioned for B8ZS.
DS1 LOS/BER
Yellow Brief Flash: Intermittent BPV errors.
HDSL4 CONT/SNR
Yellow SNR exceeded threshold value at near end of local loop (default is 0 dB).
HDSL4 L1 and L2
LOSW/BER
Yellow Brief Flash: HDSL4 CRC error at near end of local loop.
Green Flashing: Indicates synchronization is being attempted.
L
OGGING
The LPS-H4TU-C-L5 supports system logon through a maintenance terminal (VT100 or a
PC running VT100 terminal-emulation software) connected to the Craft port on the SCU
front panel. Once logged on, you can access the Main Menu screens to view local and
remote system settings, provision the circuits, perform maintenance, and view performance
screens.
To log on and access the Main Menu screens using a maintenance terminal:
ENTER
1
Press the
2
Type the assigned logon ID in the Enter Username field. If a logon ID is not assigned,
type
LOOPSTAR
ENTER
.
3
Type the assigned password at the Enter Password field. If a password is not
assigned, type
ENTER
4
Press the
Table 1. Status LED Descriptions
Description
Displays results of self-test diagnostics and initiation status.
Red Internal fault detected during diagnostics.
Off No power to the module or blown fuse.
Indicates detection of remote alarm. Press the DISP RMT switch on the APU
to determine the alarm using the CO unit LEDs.
Off Normal operation.
Indicates loopback activity.
Steady: Active DS1 loopback at the CO unit in the system.
Off Normal operation.
Indicates input line code configuration.
Off Input code is provisioned for AMI.
Indicates loss of DS1 signal (LOS), Bipolar Violation (BPV), or bit error rate
(BER) errors at DS1 interface.
Red LOS (DS1 signal is lost).
Steady: BER threshold exceeded at local DS1 interface (default is
DISABLED)
Off Normal operation.
Indicates loss of loop continuity or signal-to-noise ratio (SNR) errors.
Red The HDSL4 loops have lost continuity.
Off Normal operation.
Indicates loss of HDSL4 frame synchronization (LOSW), Cyclical
Redundancy Check (CRC), or BER errors on the indicated loop.
Red HDSL4 LOSW detected on indicated loop.
Steady: BER threshold exceeded on indicated HDSL4 loop, (default is
DISABLED).
Steady: Normal operation.
O
N TO THE
key twice to display the Logon screen.
or SONEPLEX (depending on type of system chassis), then press
LOOPSTAR1 or SONEPLEX1
key to view the Main Menu screen.
M
M
AIN
ENU
.
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