Mitel 3300 ICP Hardware User's Manual page 253

Symptom
The end device operates,
but there is no data link.
A "Power Not Active" LED
on one port is lit and the
end device is not operating.
One of the ports is
powering an end device
without turning the "Power
Active" LED on.
Is it safe to keep the 3300
In-Line Power Unit running
while "Power Not Active"
LED is on?
Resolution
Verify that the "Power Active" LED on the 3300 In-Line Power Unit front panel is lit
(continuously).
Verify that the "Data In" and "Data & Power Out" ports correspond.
The end device may require a Mitel Networks 3300 Phone Power adapter (p/n
57003121) at the set end to operate. If an adapter is already in use, replace it with
a new adapter. If this works, discard the faulty adapter.
Verify that you are using a standard UTP Category 5, 6 or 6e cable, including all 8
wires (4 pairs), and is 100m or less in length between the switch and the end
device.
Verify that you are not using any crossover twisted pair wires.
Verify that the 3300 In-Line Power Unit is connected to a switch/hub with a good
RJ-45 patch cord connection.
Try to bypass the long twisted pair cable and bring the end device close to the 3300
In-Line Power Unit and connect to one of the ports using a short cable – if it works,
there is probably a faulty connection or short on the long cable, or one bad RJ-45
connection along the line.
Try to connect a different end device to the same port – if it works and the link is
established, there is probably a faulty data link in the end device.
Try to re-connect the end device to a different "Data & Power Out" port and
remember to move the "Data In" port of the switch/hub accordingly – if it works,
there is probably a faulty "Data & Power Out" or "Data In" port in Networks 3300
In-Line Power Unit or a bad RJ-45 connection
Wait for 5 sec to 10 sec while the "Power Not Active" LED is on and the end device
is connected – if it changes to "Power Active", there was a charged capacitor in the
end device, which was discharged after being plugged in. Only then the end device
can be detected and activated.
Verify that you are not using any crossover cable between the 3300 In-Line Power
Unit "Power & Data Out" port to the end device.
The end device may require a Mitel Networks 3300 Phone Power adapter (p/n
57003121) at the set end to operate. If an adapter is already in use, replace it with
a new adapter. If this works, discard the faulty adapter.
Try to bypass the long twisted pair cable and bring the end device close to the 3300
In-Line Power Unit and connect to one of the ports using a short cable – if it works,
there is probably a faulty connection or short on the long cable, or one bad RJ-45
connection along the line.
Move the device into a different output port – if it works, there is probably a faulty
port or bad RJ-45 connection.
Unplug the device and verify that the "Power Not Active" LED turns off – if not, there
is probably a faulty port or internal short in the RJ-45 socket.
Re-connect the end device to a different "Data & Power Out" port – if the LED turns
on, there is a fault in the previous output port (probably a faulty LED).
Yes, this is a safe condition. "Power Not Active" conditions mean that a
non-power-ready device was detected, terminals 4/5 and 7/8 are shorted together
or forced external power feed into the port. During these conditions, port power is
disconnected. However, a single low power pulse every 5 sec continues to sense
the line.
Release 3.3
Troubleshooting
245