Avaya Software, CCIE - Cisco Certified Internetwork Expert, CCNP - Cisco Certified Network Professional, CCVP - Cisco Certified Voice Professional, Cisco Network Systems, Cisco Unified Communications Manager (CUCM), Cisco Unity, Communication Skills, Computer Networks, Customer Relations, Desktop Administration, Desktop PC, Documentation, H.323, HSRP (Hot Standby Router Protocol), Identify Issues, Internet/IP Telephony, Local Area Network (LAN), MGCP (Media Gateway Control Protocol), Network Routers, Network Switching, Operational Audit, PBX (Private Branch eXchange), Painting (Facilities and Maintenance), Problem Solving Skills, QoS (Quality of Service), SIP (Session Initiation Protocol), TACACS (Terminal Access Controller Access Control System), Technical Support, Telecommunications, Testing, VLAN (Virtual Local Area Network), VoIP (Voice over IP), Voice Mail, Wide Area Network (WAN)