Main duties:• Install, establish, operate, maintain and co-ordinate the use of local and wide area networks (LANs and WANs). mainframe networks, computer workstations, connections to the Internet and peripheral equipment’s.• Telecommunication private branch exchange (PBX) Installation, maintenance, troubleshooting and upgrading of related telecommunications equipment that transmit and process voice, video signals and other data over a variety of media including fiber optics.