Issue 1, Section 150-231-134
Revision 01
Page 25
TABLE 10. HLU 4-CHARACTER FRONT PANEL 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-412.
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 NI, if enabled via SAIS 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 or 1st Doubler transceivers are trying to
establish contact with each other on Loops 1 or 2.
S2L1 or 2
Signal 2 Loop 1 or Loop 2
The 1st Doubler and either HRU or 2nd Doubler
transceivers are trying to establish contact with each
other on loops 1 or 2 of span 2.
S3L1 or 2
Signal 3 Loop 1 or Loop 2
The 2nd Doubler and HRU transceivers are trying to
establish contact with each other on loops 1 or 2 of span
3.
ACQ 1 or 2
Acquisition 1 or Acquisition 2
The HLU & HRU or 1st Doubler multiplexers are trying to
establish synchronization over each of Loops 1 or 2..
A2L1 or 2
Acquisition 2 Loop 1 or Loop 2
The 1st Doubler and either HRU or 2nd Doubler
multiplexers are trying to establish synchronization with
each other on loops 1 or 2 of span 2.
A3L1 or 2
Acquisition 3 Loop 1 or Loop 2
The 2nd Doubler and HRU multiplexers are trying to
establish synchronization with each other on loops 1 or 2
of span 3.
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 Cut Off
A MNRALM has occurred, and been retired to an ACO
condition, by pressing the SEL button on the HLU front
panel.
SELF TEST
The HLU is in a self test mode. This occurs every power
ON/OFF cycle.
ALRM
Alarm Condition Exists
A minor alarm MNRALM condition is in effect.
Table continued on next page
