HMC
Product Manual
174
Release 3.4: May 2010
Troubleshooting
Troubleshooting
Table 11: Power
Display
Problem
Solution
System does not start
up
No power to the unit
Connect power cables
Alarm sounds every
time the system
boots up
When a dual power
supply is used, one
power unit is not
functioning or only
one power unit is
present
Replace faulty power unit.
Add a power unit
Table 12: PRI
Display
Problem
Solution
Sync. LED (Green)
is blinking
No synchronization
of PRI card
•
Check connections to the
PRI card at the PBX or line.
•
Verify that the PRI cable is
connected.
•
Verify that all pins in the
PRI connector are con-
nected in accordance to the
PRI specifications.
(PRI 1.1 only)
Ready LED (Yel-
low) does not light
Error LED (Red) is
blinking
Card is either not
inserted correctly, or
faulty
Card is faulty
Reinsert the card and restart the
system. If problem continues
replace the card.
Noise on the line
while call in prog-
ress
Synchronization of
PRI card is not set
correctly.
Verify PRI settings for synchro-
nization. Typically the PRI Sync.
settings at the HyperGateway
should be “Slave”.
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