Front-Panel Display Messages - ADC H4TU-C-231-L1 User Manual

LTPH-UM-1138-02, Issue 2
Table 2 lists the front-panel display messages. The four-character display reports the code of a pertinent alarm,
loopback, or diagnostic message and, in some cases, is followed by a second four-character message that modifies
the first message with a value or current configuration setting.
Message Full Name
ALARM MESSAGES
ACO Alarm Cutoff
ALRM Alarm Condition Exists
DBER DS1 Bit Error Rate
DU1U or DU1D Doubler 1 Upstream or
Downstream Port
DU2U or DU2D Doubler 2 Upstream or
Downstream Port
HBRx HDSL4 Block Error Rate Loop 1 or
Loop 2
LAx Loop Attenuation Loop 1 or Loop 2 The attenuation on the HDSL4 loop has exceeded the maximum threshold
LAIS Line Alarm Indication Signal
LLOS Line Loss of Signal
LOF Loss of Frame
LOSW Loss of Sync Word
LRAI Line RAI
MALx Margin Alarm Loop 1 or Loop 2
PWR FEED GND Power Feed Ground
PWR FEED OPEN Power Feed Open
PWR FEED SHRT Power Feed Short
PRMF Performance Report Messaging -
Far End
PRMN Performance Report Messaging -
Near End
RAIS Remote Alarm Indication Signal
RLOS Remote (Unit) Loss of Signal
RRAI Remote RAI—Remote Alarm
Indication at the H4TU-R (Net
signal has errors.)
SPNn Span Number
TUC Transmission Unit Central Office
TUR Transmission Unit Remote End
H4TU-C-231 List 1
Table 2. Front-Panel Display Messages
Description
A system alarm has occurred, and has been retired to an ACO condition by
pressing the SEL pushbutton on the H4TU-C front panel.
A system alarm condition is in effect.
A system DS1 BER alarm is in effect and remains in effect until cleared.
Precedes LA, HBR, and MAL and indicates the first H4D doubler HDSL4
upstream or downstream interface.
Precedes LA, HBR, and MAL and indicates the second H4D doubler HDSL4
upstream or downstream interface.
A system HDSL4 Block Error Rate alarm is in effect. (x indicates Loop 1 or
Loop 2.)
value. (x indicates Loop 1 or Loop 2.)
Indicates an AIS (unframed all ones) pattern is being received or
transmitted at the H4TU-C DS1 input or output ports.
Indicates that no signal is detected at the DSX-1 input to the H4TU-C.
Causes a system alarm.
The DS1 input does not contain the ESF or SF frame pattern setting of the
FRMG option.
Indicates that one of the HDSL4 loops has lost synchronization.
Indicates an RAI alarm (yellow) from the CPE with an error-free signal
from the line unit or network. RAI signal is transmitted towards the
network.
The margin at Loop 1 or Loop 2 of the HDSL4 interface has dropped below
the threshold (0 to 15 dB) set by the operator. (x indicates Loop 1 or
Loop 2.)
The HDSL4 loop is grounded.
Indicates a line power open condition.
Indicates a short between the Loop 1 and Loop 2 of the HDSL4 pair.
H4TU-R PRM-FE BER threshold has been exceeded at far end.
H4TU-R PRM-NE BER threshold has been exceeded at near end.
Indicates an AIS (unframed all ones) pattern is being received or
transmitted at the H4TU-R DS1 input or output ports.
Indicates that no signal is detected at the DS1 input to the H4TU-R. Causes
a system alarm.
Indicates an RAI alarm (yellow) from the CPE with errors from the line unit
or network. RAI-CI signal is transmitted towards the network.
Accompanies the LOSW alarm and identifies the span where the LOSW
alarm occurred.
Accompanies the DBER, HBER, MAL, LA, and LOF alarms and indicates
that the alarm has occurred at the H4TU-C central office unit.
Accompanies the DBER, HBER, MAL, LA, and LOF alarms and indicates
that the alarm has occurred at the H4TU-R remote unit.
September 12, 2003
Front Panel
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