Front Panel
152-388-115-03, Issue 03
6
April 21, 2000
H2TU-C-388 List 1E
lists the front-panel display messages. The four-character display reports the code of an 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.
Table 2.
Front-panel Display Messages
Message
Full Name
Description
ALARM MESSAGES
ACO
Alarm CutOff
A system alarm has occurred and has been retired to an ACO
condition once the SEL button on the H2TU-C front panel is pressed.
ALRM
Alarm Condition Exists
A system alarm condition is in effect.
DBER
DS1 Bit Error Rate
A system DS1 BER alarm is in effect and remains in effect until cleared.
HBER
HDSL2 Block Error Rate
A system HDSL2 Block Error Rate alarm is in effect.
LA
Loop Attenuation
Indicates that the attenuation on the HDSL2 loop has exceeded the
maximum threshold value.
LAIS
Local Alarm Indication Signal
Indicates an AIS (all ones) pattern is being transmitted from the
local DS1 output port.
LLOS
Local Loss of Signal
Indicates that no signal is detected at the DSX-1 input to the
H2TU-C. Causes a system alarm.
LOSW
Loss of Sync Word
Indicates that the HDSL2 loop has lost synchronization.
LRAI
Line Remote Alarm Indication Signal
Indicates an RAI alarm (yellow) from the CPE with an error-free
signal from the line unit or network.
MAL
Margin Alarm
The margin on HDSL2 loop has dropped below the threshold
(0 to 15 dB) as set by the operator.
PRMF
Performance Report Messaging - Far
End
H2TU-R PRM-FE BER threshold has been exceeded.
PRMN
Performance Report Messaging - Near
End
H2TU-R PRM-NE BER threshold has been exceeded.
PWR FEED GND
Ground
The HDSL2 loop is grounded.
PWR FEED OPEN
Open
Indicates a line power open condition.
PWR FEED SHORT
Short
Indicates a short between the Tip and Ring of the HDSL2 pair.
RAIS
Remote Alarm Indication Signal
Indicates an AIS (all ones) pattern is being received at the H2TU-R
DS1 input port.
RLOS
Remote Loss of Signal
Indicates that no signal is detected at the DS1 input to the H2TU-R.
Causes a system alarm.
RRAI
Remote RAI
Remote Alarm Indication at the H2TU-R - Indicates an RAI alarm
(yellow) from the CPE with errors from the line unit or network.
TRCI
TX RAI-CI Indication - Customer
Installation
Upon reception of an RAI (yellow alarm) from the CPE, the H2TU-R
sends RAI-CI toward the network, if the network signal received at the
H2TU-R is clear.
If the network signal is impaired (LOS, AIS or Loss of Frame [LOF]),
then the RAI is automatically passed to the network.
TUC
Transmission Unit Central Office
Accompanies the HBER, MAL, and LA alarms and indicates that the
alarm has occurred at the H2TU-C central office unit.
TUR
Transmission Unit Remote End
Accompanies the HBER, MAL, and LA alarms and indicates that the
alarm has occurred at the H2TU-R remote unit.
LOOPBACK MESSAGES
CLOC
Customer Local Loopback
Signal from customer is looped back to the customer at the H2TU-R.
CREM
Customer Remote Loopback
Signal from customer is looped back to the customer at the H2TU-C.
NLOC
Network Local Loopback
DSX-1 signal is looped back to the network at the H2TU-C.
Continued
