I have been providing services such as VoIP Engineer; diagnosing and correcting problems supporting customers using Asterisk PBX, Trunking, Ubuntu, CentOS, OpenVPN, load balancing, , VoIP system monitoring alarms, capacity, performance and network management wan lan tools, team leader onsite technical support engineer; implementing onsite installation and configuring for wireless and wired devices routers, switches, access points, monitoring; Troubleshooting networks problems and supporting our business partners, continual service improvement, problem trend analysis and resolution, Training the new VoIP engineers and training on new solutions applied on the network plus providing our business partner with the needed training sessions, any technical problem (openvpn, pptpd, asterisk, routing, vos, vps, sippy soft etc) inside the noc department