Section 150-431-114
Release 01
Page 56
TABLE 20. HLU-431, LIST 1D FOUR-CHARACTER FRONT PANEL MESSAGES (CONTINUED)
Message
Full Name
Description
BAD RT?
No response from HRU
The HLU does not receive any response from the HRU. Thus,
the HRU’s integrity is questionable.
VER XXXX
HLU software Version number
This is displayed during the System Settings review mode.
Depress the Mode button for 3 seconds.
LIST XXXX
HLU’s List number
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 mode defined
above.
LOSW
Loss of Sync Word
Indicates that one of the HDSL loops has lost sync. Causes a
minor alarm.
LLOS
Local Loss of Signal
Indicates that no signal is detected at the DSX-1 input to the
HLU. Causes a minor alarm.
RLOS
Remote Loss of Signal
Indicates that no signal is detected at the DS1 input to the
HRU. Causes a minor alarm.
DS1
DS1 BPV Errors
Indicates that the number of BPVs at the HLU or HRU T1
inputs have exceeded the 24-hour ES threshold. Causes a
minor alarm.
DS0
DS0 Blocked Channels
Indicates status of DS0 blocked channels. “None” indicates no
channels are blocked. BLK indicates some channels are
blocked.
MAL1
Margin Alarm Loop 1
The margin on HDSL loop 1 has dropped below the threshold
(0 to 15 dB) set by the user.
MAL2
Margin Alarm Loop 2
The margin on HDSL loop 2 has dropped below the threshold
(0 to 15 dB) set by the user.
MNGD
Managed
The HLU-431, List 1D is under control of the HMU-319
network management unit. In this state, the RS-232
maintenance port on the HLU-431’s front panel is inoperative.
