Coaxial cable lines are high frequency transmission cables that
replaces the multiple wires of telephone lines with a single solid
copper core. The coaxial cable has the capacity to transmit
information 80 times faster then the twisted pair. Cable lines are
most frequently used to link parts of a computer system within the
same building. The coaxial cable is approximately 7.62 mm in
diameter, 4.99 mm larger than phone lines.