ONT180C Installation and Turnup Guide
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the cable is an appropriate length. A limited amount of fiber slack can be placed into
the fiber slack storage located in the mounting bracket.
Desktop vs. Wall Mount
The Tellabs ONT180C can sit on a desk, table, shelf, or similar surface. This installation
allows the user to adjust its position, have easy access to the connectors on the back,
and see the LED indicators on the top as the ONT operates.
The bracket may also be useful even if located on the desktop as some cabling may be
stiff enough or heavy enough to pull it off of the desktop.
The Tellabs ONT180C can also be mounted to a wall, the back or underside of a desk
or shelf, in any orientation, using screws. This can keep the unit and cables out of sight
and out of the way.
Powering the ONT180C
The ONT180C requires 54 VDC at up to a maximum of 2.8 amps (at full PoE load). DC
power can be obtained from one of the two optional AC adapters plugged into a power
source near the installation location, or from a central remote bulk 54-volt DC power
supply.
The ONT180C consumes about 10 Watts of power with no PoE devices connected to it.
The maximum amount of PoE power available from the ONT180C depends on the DC
power input to the ONT (subject to the class limitations and apportionment by port
shown in the Specifications table):
ONT180C Maximum PoE Power
DC Input
DC Maximum PoE Power Output
150-W AC Adapter (optional)
~140 W
Remote bulk DC power
~ 90 W (Code limits remote bulk DC power to 100 VA)
85-W AC Adapter (optional)
~ 75 W
