In addition, all pairs terminated at an MDI should maintain a nominal common-mode impedance of 75
Ohms. The common-mode termination is affected by the presence of the power supply, and this should
be considered to determine proper termination.
NEW TEXT TO REPLACE THE FIRST SENTENCE OF 145.4
This clause defines additional electrical specifications for a fully connected PoE system (that is, PSE, cabling, PD and related PHYs) and therefore to each element of such a system.
Additionally, there should be a forward pointer to 145.4 at the end of 145.2 and 145.3, perhaps the following text.
"Additional electrical specifications that apply to the PSE/PD are in 145.4."