Work includes but is not limited to the design, installation, maintenance, support, and troubleshooting of security system infrastructure and applications, VOIP systems, wireless access points and antennas, and network systems; the use of network analyzers and computer based network management tools; configuration and maintenance of network firewalls and security appliances; implementation of wide area network operating system upgrades and hardware upgrades; coordination of network hardware and software vendors to develop solutions to user related access and application problems; coordination with third party electrical vendors; participation in establishing internet access paths using TCP/IP routing; assisting with field construction and renovations projects inside and outside buildings and on roofs; and researches, schedules, and installs software upgrades to security systems, network gateways, routers, and switches. This is professional, technical, and operational work involving the installation, maintenance, operation and ongoing support of the city security surveillance system and data communications networks accessing local and remote City sites with multiple network nodes, paths, and multiple technologies, including security cameras, access control systems, routers, switches, firewalls, and wireless technologies.