Experience

Comfone AG

• Switzerland
• Telecommunications
• 100 - 200 Employee

• Network Operations Engineer

  • Aug 2019 - Present

  24x7 Support of MNOs and MVNOs for signalling, GRX/IPX for GPRS, 3G, LTE & 5G NSA Data Roaming traffic and roaming hub services | Troubleshooting, service performance analysis and reporting | Monitoring of international networks (SS7, IPX, GRX), service systems (STPs, DRAs, NFVI based Key2roam Platform) and individual or combined SS7, Diameter and GTP-C signalling transaction KPIs, in near real-time | Implementation, testing and documentation of new customer services | Integration n' Administration of various roaming agreements | Network Update based on the latest IR21s of the operators



WIND Hellas

• Greece
• Telecommunications
• 100 - 200 Employee

• Switching Operations Specialist

  • Nov 2006 - Jul 2019

  -Operation n’ Configuration for UDC, CS & IMS Core Mobile & Fixed Networks, 2G, 3G, 4G (Ericsson Platforms: DSC, HSS/SLF, CUDB, MRS, M-MGW, BSP8100, MSC-s Blade Cluster, HLR-FE, CSCF, MTAS, SBG, IP-Works, RNC, BSC, TRC, AXE810 Equipment, APZ212 30, 33, 40, 50, 55, 60c, 214 01/03, 214 10, IOG20, APG40, APG43, APG43L), TSP, IS 3.1-On site emergency support and emergency recovery activities 24x7, including manual software and hardware intervention and execution of repair actions-Troubleshooting, investigation and root cause analysis resolution-eNodeB/NodeB/RBS activation, deletion, migration (until 2014)-Loading of software packages & market corrections, ACA-ECA-PDI, FNI-Daily routines health check n' backup activities-Data transcripts preparation for traffic, signaling and various modifications-Handling of exchange data, traffic analysis, B Number & IMSI Analysis-Consultation to the regional NOC engineers for problem analysis, problem identification and defining corrective actions-Signaling message analysis with Protocol Analyzer-ATM/TDM/IP associations and circuits activation, deletion, migration-Customer acceptance testing and customer test environment-Resolve customer complains that could not be resolved by the NOC-Supply & Integration Projects involvement-Recording, implementation, treatment of maintenance procedures-Spare Parts Management, Sap user-Customer Service Request Handling



Q TELECOMMUNICATIONS

• United States
• Telecommunications
• 1 - 100 Employee

• Network Management Center Engineer

  • Mar 2004 - Nov 2006

  -O&M and 1st level support for M-MGw, MSC-s,TSC,HLR,BSC/TRC.-RBS activation, deletion, migration, re-engineering, TRX expansion, EDGE implementation-Daily Health Check in Ericsson n’ Huawei Platforms -Trouble Ticket handling, Testing of Subscriber Data-Hardware Field Activities, DDF/ODF cabling-SDH/SMA cross connections(Marconi)-LMDS operation and configuration -O&M and 1st level support for M-MGw, MSC-s,TSC,HLR,BSC/TRC.-RBS activation, deletion, migration, re-engineering, TRX expansion, EDGE implementation-Daily Health Check in Ericsson n’ Huawei Platforms -Trouble Ticket handling, Testing of Subscriber Data-Hardware Field Activities, DDF/ODF cabling-SDH/SMA cross connections(Marconi)-LMDS operation and configuration



OTE Group of Companies (HTO)

• Greece
• Telecommunications
• 700 & Above Employee

• Junior Switching Engineer

  • Mar 2002 - Oct 2002

  -Operation & Maintenance for Ericsson AXE Switching for the PSTN Network-Study, application and growth of telephone exchanges-Exchange data configuration regarding PABXs-Troubleshooting for PRA customers-Provide solutions to work orders raised and Trouble Ticket solving-DSS1 issues troubleshooting using protocol analyser -Operation & Maintenance for Ericsson AXE Switching for the PSTN Network-Study, application and growth of telephone exchanges-Exchange data configuration regarding PABXs-Troubleshooting for PRA customers-Provide solutions to work orders raised and Trouble Ticket solving-DSS1 issues troubleshooting using protocol analyser