Dorin-Catalin Obrejan

Support in Industry-specific software and hardware products, services and customer-specific solutions in the field of dedicated, highly mobile and tactical communication networks. • Support in the use/configuration of products/solutions within the framework of Level2/Level3 support. • Collaboration in implementation, development and research projects. • Collaboration on test procedures / design of product tests.

Airscale/Flexi/Nokia/Huawei LTE, UMTS, GSM. Integration through Nokia Netact & Huawei U2020 for Telefonica – O2 Network Germany. Nokia/Huawei LTE and WCDMA & GSM Integration, Configuration, Troubleshooting, Maintenance and Incident management. Support site engineers for troubleshooting to achieve the recommended output for newly integrated sites. Maintain a tracker for all the issue observed along with follow-up updates.

Baseband 6630 LTE Integration through Ericsson Network Manager (ENM) on Nokia to Ericsson swap for Deutsche Telekom, Germany. LTE and WCDMA & GSM Integration, Configuration, Operation, Troubleshooting, Maintenance and Incident solving. Configuration of TMAs, RETs and Troubleshooting as well as Optimization Support and Parameter modification. Support site engineers for troubleshooting to achieve the recommended output for newly integrated sites.

Providing second level troubleshooting and solving RAN incidents/QOS degradations on Ericsson and Huawei 2G/3G/4G equipments.

Providing advanced troubleshooting and support for radio equipments on multiple vendors (Nortel 2G, Nokia 2G, Ericsson, 2G/3G/4G, Huawei 2G/3G/4G). Investigations/actions on PDH microwave transmission network: Ericsson Minilink CN/TN, NEC NEO/IPASOLINK, Huawei RTN. Providing first level troubleshooting for IP incidents on Alcatel 7750/7705 Routers

Incident Management Drive live critical / major / complex incident resolution. Ensure network faults are resolved well within agreed procedures Keep the troubleshooting plan progressing and ensure focus on service restoration. Day to Day Incident Follow up. Point of contact for Incident status and updates. Work closely with the front office to ensure incidents are logged, assigned and escalated in a timely fashion.

Good knowledge in RAN 2G, 3G, 4G technology and working with Ericsson , Nortel , Nokia or Huawei OMC Analyzing faults and identifying network impact correctly. Prompt escalation and notification of major network faults. Professionally utilizing NOC systems, tools and procedures to monitor and maintain network availability and integrity. Ensure network faults are resolved well within agreed procedures. Creating tickets for the alarms on radio equipment and doing basic troubleshooting.