New desk phones need power from the closet switch, and the switch on the order supplies power on its data ports. Which feature is the buyer selecting?
Select an answer to reveal the explanation.
Short Explanation
The power and the data should come out of the same switch port, like a faucet that also carries a message. That feature is Power over Ethernet on the switch you are buying. A bolt-on injector, a coax modem, or a fiber handoff is a different box than the switch the buyer is selecting.
Full Explanation
A PoE switch supplies power on the Ethernet ports along with the data, which is what the desk phones need and what this switch is sold as doing. The feature is Power over Ethernet on the switch. An injector is how you add power when the switch cannot. This switch can, so a separate injector is not the feature being ordered. A cable modem terminates a coax internet service. It does not power a fleet of desk phones from the closet switch. An optical network terminal terminates a fiber service. It does not add phone power to the copper ports of the closet switch. Exam caveat: the switch's power budget has to cover every phone that will draw at once. A PoE label on the switch does not mean every port can feed a hungry device at the same time. Operational check: connect one phone, confirm it boots from the switch with no local power brick, and then count the phones against the switch budget. Boot one phone from the switch with its power brick unplugged, then tally the phones against the power budget.