Programming instructions

197
Troubleshooting
In-Line Power
Use this section to troubleshoot problems with in-line powering of IP
devices.
1. Verify the following:
- Ensure power is applied to the power unit.
- Ensure you are not using crossover Ethernet cables.
- Ensure that the input Ethernet cable is connected to the Data In
port of the power unit.
- Ensure that the output Ethernet cable is connected to the Data and
Power Out port of the power unit.
- Ensure that the input and output cables of a port pair are used for
the same IP Phone.
2. Go through Table 19 below.
3. If you cannot solve the problem using Table 19, go through the steps
in “General Troubleshooting Steps” on page 181.
4. If you still can’t find the problem, call Mitel Technical Support (see
“Before You Contact Technical Support” on page 179).
Tip: Running the power unit with an Power Inactive LED ON will not damage
the Power Unit (the port power is disconnected, and a low power pulse checks
the line status every 5 seconds).
Table 19: In-Line Power Troubleshooting
Symptoms Probable cause Corrective Action
Power unit is
plugged in, but
does not power up.
No power at outlet.
OR
faulty power outlet.
OR
faulty power cord.
1. Plug a known functioning device in
the power outlet.
2. Verify that the power outlet
protection circuit has not tripped.
3. Verify that the voltage of the power
outlet is within specifications.
4. Verify that the Power Unit power
cord works correctly (including
good and solid ground
connection).
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