Overview
150-231-175-01, Revision 01
6
September 23, 1998
HLU-231 List 7E
Table 4.
Front Panel Display Messages
Message
Full Name
Description
CREM
Customer Remote Loopback
Signal from customer is looped back to customer at HLU-231.
NLOC
Network Local Loopback
DSX signal is looped back to DSX at HLU.
CLOC
Customer Local Loopback
Signal from Customer is looped back to customer at HRU.
NREM
Network Remote Loopback
DSX signal is looped back to DSX at HRU.
SMJK
Remote Smartjack Loopback
Signal from DSX is looped back at HRU by the HRU smartjack module.
TLOS
Transmit Loss Of Signal
HRU is in a logic loopback state caused by a loss of its T1 input from the
CI, if enabled at the HRU via its TLOS switch option.
FERR
Framing Bit Error Occurred
Framing bit error occurred at HLU T1 input.
LBPV
Local Bipolar Violation
A bipolar violation has been received at the T1 input to the HLU-231.
SIG 1 or 2
Signal 1 or Signal 2
The HLU & HRU transceivers are trying to establish contact with each
other.
ACQ 1 or 2
Acquisition 1 or Acquisition 2
The HLU & HRU multiplexers are trying to establish synchronization over
each loop.
H1ES
HDSL CRC Error Channel 1
HLU HDSL Loop 1 CRC error.
H2ES
HDSL CRC Error Channel 2
HLU HDSL Loop 2 CRC error.
ARM
HiGain System ARMED
Armed to respond to Intelligent Repeater Loop Codes.
ACO
Alarm CutOff
A minor alarm has occurred, and been retired to an ACO condition, by
pressing the SEL button on the HLU front panel.
SELF TEST
Self Test
The HLU is in a self test mode. This occurs every power ON/OFF cycle.
ALRM
Alarm Condition Exists
A minor alarm condition is in effect.
1=xx or 2=yy
HDSL Loop Margins
Indicates the power of the received HDSL signal on each Loop relative to
noise. Any value of ‘06’ or greater is adequate for reliable system operation.
PWR FEED SHRT
Power Feed Short
Indicates a short between the 2 HDSL pairs. This same message can occur
with an HRU that is drawing the correct amount of power over good cable
pairs but cannot communicate with the HLU.
PWR FEED OPEN
Power Feed Open
Indicates an open circuit in the T&R of either HDSL pair.
PWR FEED OFF
Power Feed Off
HDSL span power has been turned off by setting the PWFD option to DIS.
BAD RT?
No response from HRU
The HLU does not receive any response from the HRU. Thus, the integrity
of the HRU or the two HDSL loops (they may be open) is questionable.
VER
HLU Software Version #
This is displayed during the System Settings review mode. Depress the
MODE button for 3 seconds.
LIST 0xL
HLU’s List #
Displayed during System Settings review mode defined above.
FRM
Frame: SF,ESF,UNFR,NONE
Defines the type of frame pattern being received from the DSX-1. Displayed
during System Settings review mode defined above.
CODE
Line Code: AMI, B8ZS
This is the line code that HLU-231 List 7E is receiving at its DSX-1
interface. Displayed during System Setting review mode defined above.
LOSW
Loss of Sync Word
Indicates that 1 of the HDSL loops has lost sync. Causes a minor alarm.
