Provisioning
150-231-184-05, Revision 05
18
October 25, 1999
HLU-231 List 8D
Table 7 lists loopback messages displayed on the Span Status screens. For information about loopback codes, see
“Loopback Test Procedures” on page 45
Table 6.
HDSL System Alarms
Message
Name
Description
BER
Bit Error Rate
The Total System Error Count (TSEC) has exceeded the user-selected
threshold.
CHREV-SP
n
Channels Reversed
The Loop 1 and Loop 2 pairs are reversed at the HDU or HRU input
ports.
LOSW
Loss of Sync Word
One of the HDSL loops has lost synchronization.
LLOS
Local Loss of Signal
Indicates that no signal is detected at the DSX-1 input to the HLU-231.
MAL1 or MAL2
Margin Alarm 1 or 2
The margin on the HDSL Loop 1 (or Loop 2) has dropped below the
threshold (1 to 15 dB) set by the user. Setting the threshold to zero
inhibits the margin alarm.
NONE
No Alarm
No alarm is indicated.
RAIS or LAIS
Remote (or Local) Alarm Indicating
Signal
Indicates an AIS pattern of all ones is being transmitted from the
remote (or local) T1 output port.
RLOS
Remote Loss of Signal
Indicates that no signal is detected at the DS1 input to the HRU.
Table 7.
Loopback Messages
Message
Full Name
Description
ARM
Armed
The HiGain system has detected the Intelligent Repeater (IR) loopback
arming code (2-in-5).
CDU
n
Customer Doubler
n
Loopback
Loopback at Doubler (
n
) to Customer Installation (CI) initiated by an
Intelligent Line Repeater (ILR) code, the MODE and SEL buttons on
HLU-231 List 8D front panel, or by the maintenance terminal.
CLOC
Customer Local Loopback
Loopback at HRU (local) to CI initiated from Customer Premises
Equipment (CPE) by the ILR #2 code, the MODE and SEL buttons on
the HLU-231 front panel, or by the maintenance terminal.
CREM
Customer Remote Loopback
Loopback at HLU-231 (remote) to customer initiated by Intelligent
Office Repeater (IOR) code, the MODE and SEL buttons on the
HLU-231 front panel, or by the maintenance terminal.
(HG)
HiGain
The loopback was initiated from a HiGain front panel or by a HiGain
maintenance terminal loopback command.
NDU
n
Network Doubler
n
Loopback
Loopback at Doubler (
n
) to network initiated by ILR code, by the MODE
and SEL buttons on the HLU-231 front panel, or by the maintenance
terminal.
NLOC
Network Local Loopback
Loopback HLU-231 (local) to network initiated from CO by IOR code,
the MODE and SEL buttons on the HLU-231 front panel, or by the
maintenance terminal.
NREM
Network Remote Loopback
Loopback at HRU to network initiated from CO (network) by ILR #2
code, the MODE and SEL buttons on the HLU-231 front panel, the HRU
manual loopback button, or by the maintenance terminal.
OFF
Off
No active loopback mode.
(PL)
Pay Load
The loopback was initiated by a command that was embedded in the
T1 data path.
SMJK
SmartJack Loopback
Loopback from HRU to network initiated by (2-in-5) inband loopback
code or out-of-band ESF data link code.
TLOS
Transmit Loss of Signal Loopback
HRU is in a logic loopback state caused by a loss of its T1 input from
the CI (if enabled at the HRU through its TLOS switch option).