Para (41) : Subordinate or delegated legislation takes different forms. Subordinate legislation is. divided into two main classes, namely, (i) statutory rules, and (ii) bye-laws or regulations made (a). by authorities concerned with local government, and (b) by persons, societies, or corporations.
Ethernet Cat 5 cables have eight wires (four pairs), but under 10BaseT and 100BaseT standards (10 Mbps and 100 Mbps, respectively) only four (two pairs) of these wires are actually used. One pair is used for transmitting data and the other pair is used for receiving data.
Phone wiring works for Ethernet with caveats. I use 2 spare pairs from a cat3 cable used for phone wiring in an apartment built in 1978. Practically none of the current residents (of the 36 units) pays for a traditional slightly twisted pair landline, but I avoid disrupting that blue/blue-white pair just to be sure.