Telecom Equipment, Installation and Maintenance
Telecom Equipment, Installation and Maintenance
This domain tests practical equipment work: installing customer premises equipment, powering and grounding telecom units, preventive maintenance and systematic fault finding.
Core rules
- Read the installation plan and site survey before mounting equipment. Confirm power type, earthing, ventilation and cable routes.
- Use the correct power supply and UPS protection; verify voltage before connecting. Grounding protects people and equipment and reduces noise.
- Handle PCBs with ESD precautions: wrist strap, grounded mat, and no touching pins.
- Preventive maintenance includes cleaning, checking connectors, tightening terminations, backup battery tests and log review.
- Fault isolation works from the symptom to the section: power, cabling, configuration, then equipment. Change one variable at a time.
Worked example
A customer reports no dial tone. First check the telephone is on-hook and the handset cord is seated. Then measure line voltage at the jack; a normal idle line should show about 48 V DC. If voltage is present, connect a known-good phone. If the known-good phone works, the original set is faulty; if not, test the line cord and splitter, then the exchange pair. This sequence avoids replacing equipment before proving where the fault lies.
Traps that cost marks
Working on a live line without approved isolation; ignoring ESD; using a multimeter on the wrong range; replacing a unit without checking power and cabling; and failing to update labels and maintenance records.