TOP PVC vs. Plenum Rated PVC stands for Poly Vinyl Chloride, which is the insulation used around the copper wires. When it burns, it emits a poisonous gas. Well it depends. Plenum rated cables is used in air plenum ceilings where the return air is forced through the ceiling, rather than being ducted through air conditioning tubes. You should check with the Building and Safety Department of your City.
Different cities have different regulations.
In general, Plenum Rated cable must be used in an air plenum ceiling. Tip and ring are telephone terms that we will use. UTP cable is usually four pair cable. Wires are identified by colors. Each cable pair has two colors, one is primary and one secondary.