Igor Gramic

I have mainly worked with Cisco Call Manager and Call Manager Express software in Centralized Call Processing environments. I have been involved in all stages of this projects (planing, design, installation, configuration). I have also worked with new Cisco video phones (99xx), Cisco software phones, third party phones, Cisco gateways and atekeepers. Beside Cisco software I worked with Asterisk software as well with SipXecs PBX application. I am stillworking on various VoIP projects.

Maintaining complex voice infrastructure including multiple Cisco Call Manager clusters, Cisco Unity Connection clusters and Cisco Call Center clusters. Working with cisco gateways and third party call manager servers. Designing and integrating new solutions in existing infrastructure like eFax, session border controllers. Working with open-source unified communication systems sipxecs/openUC and their design,integration with other systems.

Supporting a wide array of clients in their every day work with network problems. Maintaining complex networks including different Cisco routers and L2/L3 switches, Cisco core switches (4500, 6500 series), Checkpoint firewalls. The work that I have done in AT&T has helped me to increase my knowledge in computer networking and at the same time learning how big provider companies operate.

Designing and implementing new solutions to affiliate network. Day to day monitoring of network equipment. Working with Cisco 1841 routers, 3550, 3560, 3750, 2950 and 6500 switches. Design and implement VPN solution. Encryption of traffic. Designing and implementing EIGRP routing protocol. Implementing GRE tunnels with IPSec encryption. Configuration of Frame Relay service. Configuration of ISDN service as backup line for company WAN network.

Designing, configuring and monitoring of computer networks based on wirelesses and radio technology. Design and implement VPN solutions. Business case and design for computer network. Design of VoIP network and calculating costs. Implementation of computer and VOIP network with Cisco router , 3Com switches, Trixbox VoIP server and Linksys and Siemens IP phones. During my time at Alfatec I have managed to upgrade my knowledge thanks to interesting and demanding projects. I have learned a lot about Voice over

Working on project “Improving living standard in students dormitories”. Design and implementation of computer networks in student dormitories in Nis. Installation of passive network equipment, configuration of network switches and routers, making project documentation. Implementation of VPN solution. During my work on this project I was able to gain more experience in working with real equipment and to improve my knowledge in computer networking.

Computer programig, Computer networks