IMS, CS and PS Core network development and operation.

Integration, verification and configuration management in Ericsson VoLTE IMS lab, RnD area.

Systems Integration,Implementation & Support of VoLTE IMS and PS Core networks.

Operation and Maintenance of 2G / 3G / LTE Packet Core network elements like SGSN / GGSN / MME / SGW / PGW, experienced in PCRF and SDC daily operation and troubleshooting.Part of core team responsible for successful transition of Mobile Packet Core network swap with Ericsson, Nortel, Huawei, Cisco equipment.Introduction of the First LTE in Hungary with O&M team, as a member of the Big Bang development team.Operation and Maintenance of broadband xDSL, GPON and Wi-Fi AAA RADIUS-based authentication platforms. Daily configuration and troubleshooting of NSP and Prepaid ISP functions of AAA servers, including Oracle MAA and Linux environment operation.Responsible to develop specification of legacy systems through reverse engineering.Planning and executing new captive portal trial and live introduction, including database migration from SQL to Oracle.Prior Core Network experience: Media Gateway, OSS, Mobile Positioning Centre, SS7 IP Gateway, TSP server platform, SMAS (IN) daily operation and configuration.

Daily operation and troubleshooting of Ericsson core network elements like GSN (2G-GPRS), LBS (Location Based Services), and MMSC (Multimedia Messaging Service Center), with a continuous attendance at a customer.