Connecting Peripherals
Tropos 5210 MetroMesh Router Installation Guide
42
Connecting Peripherals
The Tropos 5210 MetroMesh router can be configured to source DC power on the Ethernet
connector pins 4,5 and 7,8, This capability allows the router to power remote peripherals such as
backhaul point-to-point radios, video cameras, or fiber optic transceivers. The Tropos Power
over Ethernet (PoE) power sourcing capability is a fully isolated supply and can be used to
power either positive or negative polarity peripherals.
The Tropos PoE power sourcing capability differs from the IEEE 802.3af standard in the
following ways:
Tropos PoE includes support for multiple voltages; the 802.3af standard supports only 48V
operation.
Tropos PoE does not include support for auto-discovery.
Many IEEE 802.3af-compliant power devices (PDs) will operate using the Tropos power
sourcing equipment capabilities.
The Tropos 5210 MetroMesh router can supply up to a total of 14W of DC power distributed to
the LAN port, Management port, or both. Each port must be configured for the same voltage. To
configure the voltage, use the Tropos Configuration Utility (see the
Tropos Networks User
Guide)
or an element management system such as Tropos Control (see the
Tropos Control EMS
Installation and User Guide
). The DC output voltage can be configured to 12Vdc, 24Vdc,
48Vdc, or to the Off state (0Vdc).
Table 2
lists the maximum power output as a function of
voltage.
In the event of an over-current or short-circuit fault event, the Tropos 5210 MetroMesh router
will remove PoE output for three to five seconds before attempting to resume sourcing power to
the peripheral device.
Note
When the software restarts following a software upgrade, the PoE output will experience a
disruption for the period of the restart.
If the battery backup capability is installed, PoE output power is unaffected by the temporary
loss of AC power. The power sourcing feature continues to function during battery backup
operation (see
“Battery Backup Operation”
on page 44).
Table 2 PoE Power Sourcing Power Output
Voltage
Max PoE Power
Output
Max Enhanced PoE
Power Output
12Vdc
14W
30W
24Vdc
12W
30W
48Vdc
10W
30W
