PairGain HLU-431, Быстрое руководство по установке

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350-431-116-01, Revision 01 Testing
HLU-431 List 1F January 8, 1999 13
A
LARMS
Only one alarm can be displayed at a time on the front panel display,
therefore, only the highest priority alarm is displayed if more than one alarm
exists. The following table lists the alarms in order of priority.
Table 4. Status Menu Alarm Messages
Message Full Name Description
ALRM Alarm Condition Exists A system alarm condition is in effect.
LLOS Local Loss of Signal
No signal at the HLU- 431 List 1F local T1
interface.
RLOS Remote Loss of Signal No signal at the HRU remote T1 interface.
LOSW Loss of Sync Word HDSL Loop 1 or 2 has lost sync.
H1ES or
H2ES HDSL Loop 1 or 2 Errored
Second Loop 1 or 2 CRCs have exceeded the user
selected ES threshold.
DS1 Digital Service 1 DS1 input BPVs at the HRU have exceeded the
user selected ES threshold.
RAIS or
LAIS Remote Alarm Indicating
Signal Indicates an AIS pattern of all ones is being
transmitted from the remote or T1 output port.
MAL1 or
MAL2 Margin Alarm 1 or 2 The margin on HDSL Loop 1 or 2 has dropped
below the threshold (1 to 15 dB) set by the user.
CHREV Channels Reserved The Loop 1 and 2 HDSL pairs are reversed at the
HRU input port. Loop 1 is specified to carry the
(-) simplex dc voltage, and Loop 2 is specified to
carry the (+) simplex dc voltage.
ACO Alarm Cut-off A minor alarm occurred and was retired to an
ACO condition after pressing the SEL button on
the HLU front panel.