Hdsl System Alarms; Loopback Messages - ADC HiGain HLU-432 User Manual

150-432-100-02, Revision 02
Message Name
BER Bit Error Rate
LOSW Loss of Sync Word
LLOS Local Loss of Signal
MAL1 or MAL2 Margin Alarm 1 or Margin Alarm 2
NONE No Alarm
RAIS or LAIS Remote (or Local) Alarm Indicating
Signal
RLOS Remote Loss of Signal
Table 7 lists loopback messages displayed on the Span Status screens. For information about loopback codes, see
"GNLB Test Procedures" on page
Message Full Name
ARM Armed
CDUn Customer Doubler n Loopback
CHREV-SPx Channels Reversed
CLOC Customer Local Loopback
CREM Customer Remote Loopback
(HG) HiGain
NDUn Network Doubler n Loopback
NLOC Network Local Loopback
NREM Network Remote Loopback
OFF Off
(PL) Pay Load
SMJK SmartJack Loopback
TLOS Transmit Loss of Signal Loopback
HLU-432 List 1
Table 6. HDSL System Alarms
Description
The Total System Error Count (TSEC) has exceeded the user-selected
threshold.
One of the HDSL loops has lost synchronization.
No signal from HLU-432 local T1 input.
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.
No alarm is indicated.
Indicates an AIS pattern of all ones is being transmitted from the
remote (or local) T1 output port.
Indicates that no signal is detected at the DS-1 input to the HRU.
45.
Table 7. Loopback Messages
Description
The HiGain system has detected the Intelligent Repeater (IR) loopback
arming code (2-in-5).
Loopback at Doubler (n) to Customer Installation (CI) initiated by an
Intelligent Line Repeater (ILR) code, the MODE and SEL buttons on
HLU-432 front panel, or by the maintenance terminal.
The Loop 1 and Loop 2 HDSL pairs are reversed at Span x. Loop 1 is
specified to carry the (-) simplex DC voltage, and Loop 2 is specified
to carry the (+) simplex DC voltage. SPx indicates that the first
occurrence of a reversed span is on Span x, where x is the span
number.
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-432 front panel, or by the maintenance terminal.
Loopback at HLU-432 (remote) to customer initiated by Intelligent
Office Repeater (IOR) code, the MODE and SEL buttons on the
HLU-432 front panel, or by the maintenance terminal.
The loopback was initiated from a HiGain front panel or by a HiGain
maintenance terminal loopback command.
Loopback at Doubler (n) to network initiated by ILR code, by the MODE
and SEL buttons on the HLU-432 front panel, or by the maintenance
terminal.
Loopback HLU-432 (local) to network initiated from CO by IOR code,
the MODE and SEL buttons on the HLU-432 front panel, or by the
maintenance terminal.
Loopback at HRU to network initiated from CO (network) by ILR #2
code, the MODE and SEL buttons on the HLU-432 front panel, the HRU
manual loopback button, or by the maintenance terminal.
No active loopback mode.
The loopback was initiated by a command that was embedded in the
T1 data path.
Loopback from HRU to network initiated by (2-in-5) inband loopback
code or out-of-band ESF data link code.
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).
July 18, 2002
Provisioning
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