Section 150-431-114
Release 01
Page 52
TABLE 18. HLU-431, LIST 1D STATUS MENU MESSAGES (CONTINUED)
Message
Full Name
Description
LOOPBACKS:
SMJK
Smart-Jack Loopback
The loopback at HRU-412 (remote) toward network (see Figure 15)
initiated by either the (2 in 5) in-band loopback code or the out-of-
band ESF data link loopback code.
NREM
Network Remote Loopback
The loopback at HRU-412 (remote) toward network (see Figure 15)
initiated from CO (network) by either the Intelligent Line Repeater
(ILR) number 2 code, the HLU-431 front panel Manual Loopback
push buttons, the HRU-412 front panel push button, or the
maintenance terminal.
NLOC
Network Local Loopback
The loopback at HLU-431, List 1D (local) toward network (see
Figure 15) initiated from CO (network) by either the Intelligent
Office Repeater (IOR) code, the HLU-431 front panel Manual
Loopback push buttons, or the maintenance terminal.
NDU1
Network Doubler 1 Loopback
The loopback at doubler 1 toward network (see Figure 15) initiated by
either the IOR code, the HLU-431 front panel Manual Loopback push
buttons, or the maintenance terminal.
NDU2
Network Doubler 2 Loopback
The loopback at doubler 2 toward network (see Figure 15) initiated by
either the IOR code, the HLU-431 front panel Manual Loopback push
buttons, or the maintenance terminal.
CLOC
Customer Local Loopback
The loopback at HRU-412 (local) toward CI (see Figure 15) initiated
from CPE (customer) by either the ILR number 2 code, the HLU-431
front panel Manual Loopback push buttons, or the maintenance
terminal.
CREM
Customer Remote Loopback
The loopback at HLU-431, List 1D (remote) toward customer (see
Figure 15) initiated by either the IOR code, the HLU-431 front panel
Manual Loopback push buttons, or the maintenance terminal.
CDU1
Customer Doubler 1 Loopback
The loopback at doubler 1 toward CI (see Figure 15) initiated by
either the ILR number 1 code, the HLU-431 front panel Manual
Loopback push buttons, or the maintenance terminal.
CDU2
Customer Doubler 2 Loopback
The loopback at doubler 2 toward CI (see Figure 15) initiated by
either the ILR number 20 code, the HLU-431 front panel Manual
Loopback push buttons, or the maintenance terminal.
ARM
Armed
The HiGain system has detected the IR loopback (2 in 5) arming
code.
TLOS
Transmit Loss of Signal
Loopback
HRU-412 is in a logic loopback state, caused by a loss of its DS1
input from the CI when ENAbled at the HRU-412, List 6 and List 7,
via its TLOS switch option.
