Computer Networks, Computer Science, Computer Workstations, Digital Video, Emergency Response, Hardware Installation, High Reliability, IP Addressing, Information Technology & Information Systems, Maintenance Services, Microsoft Windows Operating System, Network Administration/Management, Network Architecture/Engineering, Network Connectivity, Network Performance/Analysis, Network Support, Network System Hardware, On Call, SIP (Session Initiation Protocol), Security Monitoring, Software Installation, Software Upgrades, Speech Technology, TCP/IP (Transmission Control Protocol/Internet Protocol), Telecommunications, Telecommunications Equipment, Telephone Skills, VoIP (Voice over IP), Wi-Fi, Wireless Communications