Axis 8122 DC 30W Midspan, Руководство по установке, Страница: 12 / 50

Page 12 AXIS T8122 DC 30W Midspan
The end device
operates, but
there is no
data link
1. Verify that the port indicator on the front panel is
continuously lit.
2. If an external PoE device is in use, replace it with a
good PoE device.
3. Verify that for this link, you are using standard UTP/FTP
Category 5 straight (non-crossover) cabling, with all
four pairs.
4. Verify that the Ethernet cable length is less than 100
meters (333 feet) from the Ethernet source to the
powered device. See
Maximum cable length between
network switch and powered device, on page 10.
5. Try to reconnect the same PD into a different Midspan.
If it works, there is probably a faulty port or RJ-45
connection.