Future Needs. You are right that 10BaseT and 100BaseT do not use more than
4 wires, but 100VGLAN and 100Base4 do. Those specifications used the extra
wires to transmit data at a slower speed. When you add up the additional
data lines multiple, 4, by the slower speed, 25Mb, you get 100Mb
transmission rate.
FYI: 100Base4 was designed to run 100Mb over Cat 3 wiring.
-dlb
----- Original Message -----
From: ""CCIE TB"" <[EMAIL PROTECTED]>
Newsgroups: groupstudy.cisco
Sent: Monday, September 18, 2000 10:39 PM
Subject: Why 8 wires in RJ-45?
> Hi group members
>
> In TP cables we have eight wires. Only four are used. Why we need the
other
> four. The same thing applies to DB-25 and other types of cables. We don't
> use all of the wires. Why?
>
> Regards to all
>
>
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