A cable management rack is designed to route, protect, and organize copper and fiber cables inside network cabinets. Each of these has imilarities and differences with specific cable management needs that must be addressed. It is important to follow allel groups or in loops may create electromagnetic interfer nce (EMI) due. This handbook is meant to help you choose, organize, and manage your racks and enclosures. In an effort to help you make the best selection for your requirements, we'll cover some of the components within racks and enclosures as well as some tips on deploying them. Today's electronic systems wiring includes voice, data, video, audio, security and control. By organizing your cables, you reduce downtime during maintenance, improve airflow.