What Ethernet standard is built into the TEO IP Phone?

The correct choice, which states that the TEO IP Phone is built with 10/100BaseT Ethernet, refers to a standard that supports both 10 Mbps and 100 Mbps data rates over twisted-pair cabling. This dual capability allows the phone to operate effectively in various network environments, accommodating both legacy systems running at 10 Mbps and faster connections at 100 Mbps.

The terminology used in 10/100BaseT denotes the type of cabling (twisted pair), and the two values following the slash indicate the speed capabilities. This standard is commonly found in many devices designed for voice communications, ensuring compatibility and reliability for users.

In contrast, other options do not accurately represent the capabilities built into the TEO IP Phone. Fast Ethernet usually refers to 100BaseT, which does not highlight the backward compatibility with 10 Mbps. Gigabit Ethernet describes a higher speed network standard at 1000 Mbps, which may not be present or necessary in this specific device. Lastly, 100BaseFX is a standard that specifies fiber optics, which is not applicable to the TEO IP Phone's construction aimed at accommodating standard copper Ethernet connections.