Summary
Overview
Work History
Education
Skills
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Personal Information
Timeline
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Venkata Subbarao Dongari

Venkata Subbarao Dongari

Bengaluru

Summary

  • 13.10 years of experience in Telecommunication field (6 years: 5G simulator & RAN Testing, 2.1 years: IMS Testing, 2.3 years: 2G BSC Testing & 3.8 years: STP Monitoring & Configuration)
  • Experience on both Manual testing & Automation Testing.
  • Excellent knowledge & experience on Feature Testing, Sanity Testing, Regression Testing, Performance Testing, Robustness Testing, Integration & Verification Testing.
  • Hands on testing experience on 5G NR, gNodeB (5G Cloud BTS, 5G Classical BTS, NSA, SA, mmWave , cmWave, CPRI, eCPRI), Air Phone (4G UE, 5G UE, 4G & 5G Core Network) simulator.
  • Good experience on trace analyzing tools like QXDM, QCAT & Wireshark.
  • Good Experience on Docker, Kubernetes, Nokia Cloud, Redhat Openstack, Open stack, Linux platforms
  • Experience of Integrating Network Elements & Network Monitoring Hands on experience on IP Multimedia Subsystem Nokia IMS (P-CSCF, I-CSCF, S-CSCF & HSS).
  • Good knowledge and experience on SS7 & SIGTRAN (IP, SCTP, M2PA & M3UA), Huawei STP (Signaling Transfer Point)
  • Hands on experience in SIP & DIAMETER Protocols.
  • Good Knowledge & Experience on Robot framework.
  • Extensive experience in identification of test scenarios, writing test cases, test case execution, bug reporting & writing test plan.
  • Strong knowledge & experience in required logs collection and logs analysis.

Overview

14
14
years of professional experience

Work History

Technical Lead

Nokia Solutions and Networks
05.2019 - Current
  • Nokia gNodeB (5G Cloud BTS, 5G Classical BTS, NSA, SA, mmWave , cmWave, CPRI, eCPRI), FHGW (Fronthaul Gateway) & Airphone simulator (4G UE, 5G UE, 4G & 5G Core Network)
  • Study of Requirement Specifications and knowing the impact on Functional Testing point of view for gNodeB & Integration testing point of view for Air Phone.
  • Integrating Airphone with gNodeB for new features.
  • Performing Stability Testing for Airphone.
  • Testing Airphone new features along with gNodeB.
  • Validating Parity features of gNodeB with Airphone.
  • Testing both CPRI & eCPRI related features for Integration & Verification Scope.
  • Writing Functional and I&V test Cases for new features.
  • Preparing required Test bed for new features.
  • Executing planned test cases.
  • Report bugs & tracking through Pronto tool.
  • Participate technical meetings & discussions (Requirement Specification and Internal specifications).
  • Preparing documents for Integration Testing.


Test Engineer

Nokia Solutions and Networks
04.2017 - 04.2019
  • IP Multimedia Subsystem (IMS) as a solution it includes Call Session Control Function (S-CSCF, I-CSCF, P-CSCF, E-CSCF, IBCF, HSS & PCRF). It will support VoLTE to VoLTE, VoLTE to PSTN and PSTN to VoLTE, SMS over IP, Presence Service, Emergency, Multi Endpoint etc.
  • Study of Requirement Specifications and knowing the impact on Performance & Robustness Point of view for new features.
  • Identify Performance & Robustness Test Scenarios.
  • Writing Performance & Robustness Test Cases for new features.
  • Floating test cases for review.
  • Uploading test cases in Quality Centre once Test Cases approved.
  • Review other feature test cases.
  • Prepare required Test bed (Installing new software releases, Integrating CSCF with other nodes should be simulators or real nodes as per feature requirement).
  • Executing Performance test cases for new features.
  • Executing Performance regression test cases & Robustness regression test cases release wise for CSCF.
  • Report bugs & tracking through JIRA tool.
  • Follows the Agile method & Scaled Agile Model.

R&D Specialist

Nokia Solutions and Networks
01.2015 - 03.2017
  • A base station controller (BSC) is a critical mobile network component that controls one or more base transceiver stations (BTS), also known as base stations or cell sites. Key BSC functions include radio network management (such as radio frequency control), BTS handover management and call setup. A BSC works with a mobile switching center (MSC) component that is external to the BTS, enabling it to provide full mobile telephony and fulfil capacity requirements. Base stations must communicate with the MSC and data must be managed as information overflow, impacting MSC efficiency. A BSC eliminates MSC base station activity management requirements, allowing the MSC to handle critical tasks, such as traffic balancing and database management. BSC will communicate to SGSN for data calls.
  • Grooming the features related to GPRS.
  • Identify Test Scenarios for Functional features like Multipoint Gb, EC-GPRS etc.
  • Design Functional test cases.
  • Review other feature test cases.
  • Prepare required Test bed.
  • Prepared test bed’s and lab from scratch.
  • Execute Sanity, Feature & Regression test cases.
  • Report bugs & tracking through Pronto.
  • Participate technical meetings & discussions.
  • Participate Requirement Specifications discussion.
  • Handled Escape Defect Analysis.

Customer Service Executive

Tata Communications Ltd.
08.2014 - 01.2015
  • Service Assurance for International roaming traffic migration.
  • SS7 traffic Monitoring during traffic migration.
  • Taking traces & analyzing through Agilent tool.
  • Analyzing the traces for Location Update, MT Call & SMS.
  • Taking the reports for SS7 traffic utilization.
  • Support traffic migration for international operators.
  • Monitoring the International A2P traffic & escalation to related teams.
  • Checking the A2P traffic to check Delivery Failures & Delay in Delivery.

Engineer

Huawei Telecommunications (India) Pvt. Ltd.
07.2011 - 08.2014
  • SG7000 serves as an independent signaling transfer device and processes and transfers the SS7 and SIGTRAN signaling messages between the TDM network and the IP network. With its high processing capability, the SG7000 connects large-scale network nodes in order to simplify network structure and meet the requirements for the signaling gateway of the 2G and 3G networks.
  • Integrating STP with other Network Elements like MSS, HLR, SMSC , IN & charging Nodes.
  • Doing the all required configurations like GT, MNP tables, Links, Routes etc.
  • Network Monitoring.
  • Capturing the traces for MO Call, MT Call, SMS, Location Update.
  • Troubleshooting the signaling related issues.
  • Supporting during Migration.
  • Daily Health checkup for Signaling Transfer Point.
  • Collecting all traffic related reports.
  • Alarm monitoring & escalation.
  • Perform Traffic Migration Activities.
  • Perform Traffic diversion during outages.
  • Defining TDM Links & Sigtran Links.

Education

B.Tech - ECE

Gudlavalleru Engineering College
01.2008

HSC - MPC

Board of Intermediate Education
01.2003

SSC - undefined

Board of Secondary Education
01.2001

Skills

  • Openstack and Hypervisor
  • Nokia Cloud
  • RedHat Openstack
  • Docker
  • Kubernetes
  • Linux(Most of the flavours)
  • 5G, LTE, GSM, IMS
  • 5G Protocols, SIP, DIAMETER, SS7, SIGTRAN
  • Quality Centre
  • Pronto
  • JIRA
  • Robot Framework
  • Jenkins
  • Feature Testing
  • Performance Testing
  • Regression Testing
  • Sanity Testing
  • Robustness Testing
  • Integration Testing
  • Wireshark
  • Airphone simulator
  • QXDM Simulator (UE simulator)
  • GEMU (GSM simulator )
  • IPSL, EXFO simulators

Languages

English
Telugu
Hindi

Personal Information

  • Date of Birth: 06/17/86
  • Gender: Male
  • Nationality: Indian
  • Marital Status: Married

Timeline

Technical Lead

Nokia Solutions and Networks
05.2019 - Current

Test Engineer

Nokia Solutions and Networks
04.2017 - 04.2019

R&D Specialist

Nokia Solutions and Networks
01.2015 - 03.2017

Customer Service Executive

Tata Communications Ltd.
08.2014 - 01.2015

Engineer

Huawei Telecommunications (India) Pvt. Ltd.
07.2011 - 08.2014

HSC - MPC

Board of Intermediate Education

SSC - undefined

Board of Secondary Education

B.Tech - ECE

Gudlavalleru Engineering College

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Venkata Subbarao Dongari