Allied Telesis AT-9448Ts/XP (Basic Layer 3) - Manual (Page 72)

Chapter 3: Troubleshooting
72
PoE Device is Not Receiving Power
If a powered device is not receiving power from the AT-9424T/POE
Switch, do the following:
ˆ Check to be sure that the powered device is designed to receive
power over pins 1, 2, 3, and 6 on the RJ-45 port. This can be verified
by reviewing the device’s documentation or data sheet.
ˆ Check that the device’s power requirements do not exceed 15.4 W.
This can be verified by reviewing the device’s documentation or data
sheet.
ˆ Verify that the twisted pair cable is Category 5 or 5E.
ˆ Verify that the twisted pair cable is not faulty.
ˆ Use the AT-S63 management software to determine whether PoE is
enabled on the switch and the port. The default setting for PoE is
enabled.
ˆ Use the management software to determine whether the PoE power
setting for the port has been reduced from the default setting of 15.4
W, to a value below the power requirements of the device.
ˆ PoE is not supported on the SFP slots.
ˆ Verify that the power budget on the switch is not being exceeded by
the powered devices. This should not be a problem for the AT-9424T/
POE Switch, which can support powered devices on all ports 1 to 24,
even when all devices require the maximum of 15.4 W.