NETWORK CABLE AND CONNECTORS
There are several classifications of cable used for twisted-pair networks. I'll skip right over them and state that I
use and recommend Category 5 (or CAT 5) cable for all new installations. Likewise, there are several fire code
classifications for the outer insulation of CAT 5 cable. I use CMR cable, or "riser cable," for most of the wiring I
do. You should also be aware of CMP or plenum cable (a plenum is used to distribute air in a building). You
may be required by local, state or national codes to use the more expensive plenum-jacketed cable if it runs
through suspended ceilings, ducts, or other areas, if they are used to circulate air or act as an air passage from
one room to another. If in doubt, use plenum. CMR cable is generally acceptable for all applications not
requiring plenum cable.