These two acronyms are confusing as the “C” and the “M” do not indicate separate words, but are an abbreviation for “CoMmunication”:
- CMR = Communications Riser
- CMP = Communications Plenum
A "booted" cable is a cable that has a molded "plastic" boot that fits on the cable end of the connector and a portion of the cable itself. Sometimes a booted cable is also referred to as a "strain-relief" cable, which is exactly the purpose of the boot…
There are two main types of boots that you will encounter, a separate boot that you can purchase to put on a cable that your are making on your own, or when you buy a manufactured cable that has its own injection molded boot.