In these times, virtually everybody relies on telephones,radios, televisions, and computers for communication and connectionwith the outside world. These machines use complex electronicequipment that the average person cannot install or manipulate bythemselves. Radio and telecommunications equipment installers areneeded to set up these systems and keep them in dependablerepair.Radio and telecommunications equipment installers work with awide variety of complex electronic equipment, and because of theextensive possibilities that this job requires, installersgenerally choose one area to specialize in. Central officeinstallers work at switching hubs that contain equipment whichdirects transmitted information to its destination. PBX installersset up private branch exchange (PBX) switchboards,