Tarit Roy

Shared Reference Network(SRN) provides ready-made end-to end telecom test networks and services to Nokia wide laboratory users for product/solution integration and testing from R&D to customer deliveries including customer demos and trails Through the Global Shared Reference laboratories that are one-stop-shop for all Nokia products and solution environments, SRN supports both global and regional team to get pre-integrated network or solution environments, thus letting them to focus on their core business and Development or customer Delivery.

• Successfully deployed Cloud CFX, SBC, and Netnumber Titan installations.
• Effectively implemented all call configuration for CFX, SBC, and Netnumber Titan.
• Installed Cloud HSS including VI, VNF, and CNF alongside CSD.
• Successfully implemented call-related configurations in HSS by seamlessly integrating it with CMM, CFX and CSD for effective call testing procedures.
• Implemented effective CNF CFX & AUSF_UDM deployment.
• Successfully migrated traffic from old IMS nodes to newly installed IMS nodes.
• Provided FEE testing support from CFX end for various VNF & CNF software versions.
• Provided support to the CMM R&D team for testing compatibility with the latest HSS and CSD software versions.
• Collaborated with CFX R&D to ensure seamless integration of the latest HSS, NetNumber Titan, and SBC releases through extensive compatibility testing.
• Troubleshooted VoLTE and VoNR calls across all IMS nodes.
• Provided support to CMM and CFX R&D teams for call related issues encountered during compatibility testing.
• Successfully resolved 2G/3G call issues by troubleshooting and making configuration changes at the MSS end.

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NE Support (NESUP) provides network element support for NetAct, NOM, UTF-PTF, DCAP programs for NEs:

• Performed installation of R&D release on CS Core NEs such as MSS, oMGW, NTAS, VMRF, and DMRF.
• Installed R&D release for IMS NEs including CFX, SBC, HSS VI/VNF, CSD & SM, NetNumber Titan.
• Integrated NetAct with CS Core & IMS NEs and provided testing support for FM/PM/CM related test cases.
• Efficiently executed the installation of CNF NEs ZTS, mCFX, CNF HSS-HLR, AUSF_UDM NCOM and CDMRF.
• Successfully integrated CNF NEs with NetAct.
• Installed NCS (Nokia Container Service) platform on Openstack (CN-A) to deploy CNF products.
• Developed expertise in resolving issues related to SNMP, Alarm Management, Performance Management & Configuration
  Management.
• Resolved problems related to installation and upgrades of VNF & CNF CS Core/IMS products.

• Handled responsibilities in Incident Management Team at Vodafone Idea India NOC.
• Provided critical support for Emergency cases on the MSS & oMGW side in various circles.
• Conducted regular health assessments and data backups for NSS elements; also responsible for performing preventive maintenance on NSS Nodes.
• Successfully resolved issues related to call failure and hardware failure across various regions.
• Monitored and analyzed call failures and Clear Codes during NBH for circles.
• Efficiently performed hardware troubleshooting and replacement tasks for MSS & oMGW during maintenance windows across diverse circles.

• Managed Andaman & Nicobar location in RoWB Circle for Bharti Airtel Project as Core Engineer.
• Successfully migrated live traffic from monolithic DX MSC to MSS and oMGW.
• Facilitated seamless transition of live traffic from DX HLR to NT-HLR in collaboration with Nokia Project Team.
• Facilitated coordination with other operators to enhance E1 augmentation and signaling shifting.
• Restored POI/BSC down (OOS) circuits.
• Worked alongside NLD POI/SD Voice NOC team during SWITCH AT to perform test calls and deliver comprehensive call log, traffic data, C7 traces, and Slip measurement results.
• Managed CDR exchange, facilitated RA clearance, and successfully commercialized POI after AT.
• Conducted daily O&M tasks such as backup, health checkup, link status verification and preventive maintenance.

• Worked as Core Engineer in Ericsson on the Bharti Airtel Project in RoWB Circle.
• Contributed significantly to BSC optimization, planning, and rehoming.
• Implemented successful BSC augmentation strategies resulting in maintained utilization levels.
• Worked closely with NOC to strategically organize and implement essential activities for the Circle.
• Successfully executed mass rollout for new CD upgrade, resolving coordination issues with the SW upgrade team.
• Planned and implemented E1 augmentation for NLD, ILD, and POI networks.
• Provided alarm surveillance, administered alarm systems, and analyzed Alarm & Event Logs for the purpose of fault rectification.
• Performed complete analysis of level openings from GSM, CDMA, and WLL & Fixed Line Operators.
• Implemented short code definitions.
• Coordinated with National GSM operators for roaming testing.
• Maintained vigilant observation of core network utilization and communicated any fluctuations.

• Gained valuable experience as a GET in Ericsson, working on transmission tasks related to the Reliance Communications project.
• Identified and resolved issues with SDH MUX, MW links, as well as enterprise customer equipment.
• Restored GSM & 3G sites by re-routing E1s in case of fiber-cut.
• Managed call configurations and monitoring for Huawei MSC & MGW.