Hi All, Please help me to understand gigabit ethernet mdi interface. Gigabit ethernet uses 4 differential pairs which are designated as tx[0:3]p/n , which pairs are used for transmit and which are used for receive?? how tx and rx is controlled? How 1gbps is achieved in mdi interface using 4 pairs?? It would be nice if I can get some document explainging this. Thanks Sabir ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List forum is accessible at: http://tech.groups.yahoo.com/group/si-list List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu