Hmmmm.... Not sure whether it's a good description or not. Reading through it I can see what he means, but I don't think I'd trust it too far. With a 4 level code you could transmit 2 bits over a pair of wires 00 01 10 11 ,which I suppose simplified means one bit per wire (yuk - not really). I think he means "125 million times per second". And short answer to your question, yes I think "1 bit per wire" is very misleading. One wire can only be at a level with respect to the other wire of the pair.
Gaz ""Michael Williams"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Hartnell, George wrote: > > > > I did not note a speed associated with that full-duplex > > Ethernet spec. > > Wouldn't GigE Cu require all eight? And, might a new cable > > plant effort be > > well-served to require all eight conductors per RJ? > > > > Best, G. > > VP OGC > > I'm so far removed from Gig at this point I didn't realize that it used all > 8 wires. So I dug around and found this page talking about Gig ethernet and > it had some comments I don't quite get and I want all of your input on > this. The article, located here (watch for wrap): > > http://www.networkuptime.com/columns/copper_gig/ > > says: "1000BASE-T sends and receives signals simultaneously on the same > pair of wires by combining a 5 level coding scheme, thus 4 pairs of wire > allow 1000BASE-T to send a single byte (one bit per wire) in parallel at > each signal pulse 125 times per second." > > How is it sending 1 bit per wire? How's this? Someone tell me if this is > correct or if this phrase is just misleading or what. > > Thanks! > Mike W. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=31691&t=31643 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
