If categorized by cable type, communication cables can be classified as follows:
Single Conductor: Refers to the original communication cable, single conductor loop, with the earth serving as the return line.
2. Symmetrical Cable: Consists of a loop formed by two conductors that are identical under ideal conditions.
3. Coaxial Cable: Consists of an inner and outer conductor arranged on the same axis, with the outer conductor surrounding the inner conductor while both are insulated.
