|CAT-5 PVC||Without jacket|
|CAT-5E||1000 Mbps speeds (Gigabit Ethernet) at 100 MHz|
|CAT-6 PVC||Without jacket|
|CAT-6e||10 Gigabit Ethernet at 250 MHz|
|Shielded||Enclosed by a common conductive layer|
|Fiber Optic||Carries light with speeds at ~1+ Tbit/s|
|COAX||Surrounded by a tubular conducting shield|
|AWG||Electrically conducting wire|
CM - Communications rated for general use. Used in cases where fire code does not restrict cable type.
CMR - Communications Riser, prevents fire spreading from floor to floor, designed for use in risers and vertical shafts.
CMP - Communications Plenum, designed for use in ducts and plenum spaces without the use of conduit and contains a fire-retardant jacket. CMP can be used in the place of CMR cable, but CMR cable cannot be used to take the place of CMP cable.