8 Years of extensive experience in configuring, troubleshooting IP Phones (Polycom, Cisco, Yealink, Grandstream). Providing Support and Maintenance service for : Setting up and Configuring IP Phones Configuring provision server IP phone Provisioning, Troubleshooting, Factory Resetting and Fixing issues with IP phones Configuring desktop phones (Softphones) Configuring VPN, NAT, Firewall (signal blocking) Resolving issues related to Port Restriction, Packet loss etc. Configuring VOIP phones.