Encompasses the installation, troubleshooting, and repair of single and multi-line systems for telephones, fax machines, alarms, and fiber-optic cabling. Students are introduced to fiber optics as a modern communications system. Laboratory activities include fusion splicing of these multi-line systems, as well as fiber-optic terminations and connections. A course fee is required. Prerequisite: ELOC 153 with a grade of C or higher.