Ethernet and intra-networking for cohousing
From: Alex G (striker222hotmail.com)
Date: Fri, 8 Jun 2001 08:57:01 -0600 (MDT)
Ethernet uses 3 pairs, I think (1 through 6)

Standard "ethernet" can use 2 pairs, or 4, depending on the mode it is running.

In Tierra Nueva many houses have 2 pairs for two phone lines, and 2 pairs for thier data. This allows 10 megabits a second.


Note that 3 levels of hub are allowed

You can have as many levels of hubs as you want, well, within reason. A lan is no different than the internet, there are broadcast stations and media. As long as there is not too much media inbetween 2 broadcast routers (hubs, computers, routers, switches, etc) the signal will perpetuate forever, its like a long chain. Just reading your email you probly went through anywhere between 5 and 15.

You MAY be thinking of various LAN standards and measurments, there are IEEE standards, and 802.xx standards, for example. They are just
guidelines.



I discovered that if you are running 10baseT over cat5 cable, it >>works if the blue & white pair has a phone line on it.

A wire is a wire is a wire. Color is merely for your own organization, in your case, the other end of the line must have been configured in a way that made blue the correct choice.

I'm not competent to answer that.  But note that cat5 is by definition
unshielded.

There are different kinds of cat5-UTP (unshielded twisted pair), strait cat 5 relies on twisted pairs to cancle out interference. Cat5-STP, or something, is shieled, heavy, thick, and expensive. Note that tierra nueva uses Cat5-E, for extended, increases the range a bit.

-Tierra Nueva lan guy


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