Communications Technician AT&T, Dallas     Ohm's Law Electricity and electronics Fiber optics Problem   Work Skills Jobs and Careers   The telecommunications technician tests new telecommunications equipment before it is installed into the system, connects new customers to the telecommunications system based on the documentation provided, maintains service to customers by troubleshooting interruptions in service, identifying problems, and replacing or reconnecting components, as needed. The technician must be able to use test equipment, to use tools with connecting wires, to obtain information and provide information using the computer, and to read technical manuals and schematic drawings.