The design of 1000BASE-T borrowed several features from 100BASE-T2.
A 1000BASE-T link physically operates in a full-duplex manner.
After an autoconfiguration negotiation that establishes the properties of the link, steady streams of symbols flow across each wire pair in both directions.
Idle symbols are sent between data transmissions.
The start and end of each frame are marked by special delimiters.
1000BASE-T operates bidirectionally across four twisted pairs. A complex encoding and lots of extra electronic components have been introduced to accomplish full-duplex gigabit transmission.
Crosstalk can become a serious problem when signals are continuously being sent across a bundle containing four cables. One mechanism that helps ...