cat5 cable current AC or DC?

[north.cartman007]

I know that data is transmitted via cat5 cable with Mnchester encoding which uses the changes in the voltage as binary data. Question is , is this current in the cable AC or DC?

 

[I am confused2]

If you want to look at that way, it is a type of DC.

In reality there is no power on the cable unless you are doing a power over either system.

 

[iParanormalx]

I know that data is transmitted via cat5 cable with Mnchester encoding which uses the changes in the voltage as binary data. Question is , is this current in the cable AC or DC?

The original IEEE 802.3af-2003 PoE standard provides up to 15.4 W of DC power (minimum 44 V DC and 350 mA) to each device. Only 12.95 W is assured to be available at the powered device as some power is dissipated in the cable.

The updated IEEE 802.3at-2009 PoE standard also known as PoE+ or PoE plus, provides up to 25.5 W of power. The 2009 standard prohibits a powered device from using all four pairs for power. Some vendors have announced products that claim to be compatible with the 802.3at standard and offer up to 51 W of power over a single cable by utilizing all four pairs in the Category 5 cable.

Power over Ethernet - Wikipedia, the free encyclopedia