Duties of the Switch Network Installer and Repairman include installing, testing, maintaining, and repairing telephones. The repairman also assists with telecommunications equipment and telephone switching equipment related to processing and transmission.

The Repairman examine and repair the service equipment, wiring and phone jacks. The professionals have to examine the repaired, newly installed and updated equipment to make sure that it is functioning properly. They should identify and resolve any issues related to routing and dialing equipment. It is the responsibility of the repairman to regulate the equipment to maximize its performance.