ONT G-25E Hardware Installation Manual
4.2
Troubleshooting Procedures
Problem
Possible Solutions
Make sure the power cable connector is properly
seated in the ONT power input.
Verify that the power adapter is plugged into a live
AC outlet.
Check the power cable for shorts or breaks.
The POWER LED is off
Disconnect the power input connector at the ONT
and use a voltmeter to verify that the proper
voltage level is present on the 12 V pin (power and
power return) from the power adapter.
Power cycle the ONT by unplugging it from the
power adapter, then plugging it back in. If the
ONT fails the self test a second time, replace
the unit.
The ALARM LED is red
flashed or in red solid
Check the optical path.
The OPTICAL LED is in red
solid
Reset the ONT by reset button. If the ONT fails
again, replace the unit.
This is normal at boot-up and may take up to 1
minute to turn green. If this state persists, contact
the NOC (Network Operation Center) to verify that
the ONT serial number, password, and vendor ID
match those provisioned in the network database.
The OPTICAL LED is
always green flashed
If provisioning is correct, have the NOC
determine whether there are alarms on the PON
feeding the ONT. If no alarms exist, use an
optical power meter to troubleshoot the fiber
network.
The UPGRADE LED is in
red solid
Contact NOC.
Check the telephone connection, or voice service
is disabled. Contact NOC for verification.
The POTS LED is off when
telephone off-hook
Check the Ethernet connection, or data service is
disabled. Contact NOC for verification.
The Data LED is off
Table 9 Troubleshoot procedures
313-12201-02 Rev. B: August 2007
Cambridge Industries Group Co. Ltd
13
