Sumit Kumar

Experience

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  Vodafone

  Jan 2010 - Jul 2011

  NSS Engineer

  • Operation and Maintenance of SIEMENS D900 Switch , NOKIA DX 200And Ericsson switch (APZ-21260 APG-43)• Opening of New level series.• Health checkup and Alarm Monitoring of MSCs/HLRs.• POI’s/Database creation for Interconnectivity with other Telecom Operators. • HLR REGEN DUMP and GOLDEN backup taking as per schedule.• Prepare and Analyze Traffic Reports and Health Reports and give feedback to planning division.• Provide Technical Support to the customer Care division, Billing system, Marketing & Sales and service team.• Provide a fully available voice network to the highest quality standard.• Coordinate with DOT, to solve the problem with regard to PSTN interconnectivity links.• Resolution of subscriber complaints and root cause analysis• Escalation according all service failure as per network operation escalation process Show less

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  Nokia

  Jul 2011 - Jun 2013

  NSS+STP Engineer

  STP• Handling SURPASS HIS-700(Siemens STP)-Number Portability, Hardware/Firmware troubleshooting (ASN5, AMX, ACCP, MPUE, LIC cards) along with MTP/SCCP Routing.• Coordination with provisioning team for MNP related issues. Audit & Repair on Monthly Basis.• Take the Backup of Buffered Entries and do the Manual Provisioning & Audit_Repair from STP end. • SCCP and MTP routing in STP’s as per requirement.• SPOTS for performance management & Traffic load generation and analysis with SPOTS server as well as traffic projection for future including planning and optimization of signalling links• Taking STP(M3UA, SCCP and ISUP) Live Traces & Analysis by Handling Signaling Intel Server (SIS) tool for Link set• Routine MDD & MOD back up of all STP’s • STP Performance analysis and ensures 100 % availability.• Narrowband, Broadband, Sigtran Link creation.• Analysis of different reports to measure the performance and system behavior as Link Utilization, MSU flow, SCCP Error, Processor Utilization etc Show less

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  Tech Mahindra

  Jul 2013 - Oct 2014

  Senior Network Engineer

   Fault management NOC-3UK Project for CS-Core Actively to do network surveillance and problem tracking processes (FM). To promote the NOC in the role of logical hub for all network activities, encompassing surveillance, field activities, change management etc. Ensure that all levels of network maintenance and support are utilized in a timely manner in line with agreed service levels. (FM) Assure communication flow of trouble tickets among the several competence groups in NOC. FLM, SLM / Care and third party support groups. Follow up open trouble tickets till closure every 30 min. (FM) Actively to do network surveillance and problem tracking processes (FM). To promote the NOC in the role of logical hub for all network activities, encompassing surveillance, field activities, change management etc. Ensure that all levels of network maintenance and support are utilized in a timely manner in line with agreed service levels. (FM) Assure communication flow of trouble tickets among the several competence groups in NOC. FLM, SLM / Care and third party support groups. Follow up open trouble tickets till closure every 30 min. (FM) Guarantee timely issue of network reports to all interested parties. Deliver regular reports on SLA activity, Performance and quality. (PM) 4G/3G/2G CS-PS Core performance analysis and day to day reporting.  LTE/IMS Deployment analysis and identification of key requirements in Core. Show less

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  Nokia

  Oct 2014 - Sept 2016

  Fault Management Engg.

  Role : Core SDM Engg. On Project of RJIO, MumbaiSwitching Platform: - NT-HLR FE 7.0, One-NDS (V9.0 SP1) (PGW, ADM, RDS, BDS), One-EIR (v5.0 SP1), HSS CMS8200 (V10.1)Responsibilities of Project• I was responsible for handling HSS, NT-HLR VoLTE, IMS & HLR and EIR Operations on RJIO Volte network base location is Mumbai.• Working on HSS CMS8200 (V10.3), OneNDS 9.0 SP1, EIR 5.0 SP1, NTHLR 7.0 under Reliance JIO 4G project in India for LTE and VOLTE, all are of latest HP hardware.• Handled Nokia HSS 16.5 & HP Gen-9 upgrade from 9 SP2/Gen-8 for enhancing Jio capability of handling traffic from 100 million to 235 million• Working on S6a, Cx, Sh, S13 and HD interface.• Installation and Working on PGW, SUBSCRIBER DUMP TOOL,PROXY SERVERS.• Subscriber Provisioning with SPML & GUI.• Troubleshooting various issue like IMS Registration TPR, LTE Attach, GSM-LU, SMS , MO&MT Calls• Sites Analyzing and troubleshooting the alarms.• Extracting reports from HLR and generating HLR statistics reports.• Provisioning of subscribers in LTE, IMS & HLR.• Subscriber profile related changes and deletion of subscriber profile in NT HLR & HSS.• Configuration of LTE Roaming, IMS Roaming.• Provide ATP support for various test cases.• Analyzing PCAP traces on NT HLR & HSS.• STP Link creation with NT HLR FE and Hd interface connectivity towards HSS FE via DRA(Diameter Routing Agent)• LEMAF configuration in HSS/HLR FE, TELESYS/TSP GUI related config in HLR• Familiar with LDAP, Diameter, SOAP, MAP protocol.• FM, CM, PM related config in NDS/HLR/HSS/EIR Nodes.• Done Major activities of IMS Migration from Mavenir to Nokia from HSS side.• Supporting Multi vendors Samsung, Mavenir for their Test case execution of IMS and MME.• To prepare Acceptance Test plans (ATP) and NIT Testing Show less

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  Ericsson Software

  Sept 2016 - Oct 2017

  Senior Engineer

  Worked with Ericsson India Global Services Pvt. Ltd.Role : Senior Engineer on Project of RCOM, MumbaiSwitching Platform: - Hewlett Packard Unified HLR, HSS, IMS(P,I,S-CSCF), MGW, SBC, MGCF,BGCF,MRF,TASResponsibilities of Project• Level 2 support for voice network issue for PAN India of RCOM Network.• Troubleshooting of different Technical voice issue, while working on multiple protocols, like PSTN, SS7, TDM, SIP, H.323,VOIP, FCC protocols & Platform.• Resolving issue by involving other team like Packet Core, IP Team & First Level assurance to get the issue re-solve with in SLA as per ticket severity.• Make sure that RCA of a problem is being provided by the competency• Diagnosis of faults and determining whether new incidents are related to known errors or existing problem records• Keep track of all IMS related issue with end to end• Analysis of Ethereal traces to observe the SIP traces with the help of Wirekshark• Co-ordination with NLD/ILD PoI partner.• Handing other types of services rendered including Voice, Data, Video, DTFS, ITFS, FAX, PRI, Short Codes,• Completed end to end 2B-2C ATP cases of newly integrated IHSS with customer.• Perform & plan circle migration activities from one HLR/HSS to another to maintain its defined capacity.• Conduct monthly governance meeting with customer.• Troubleshooting various issue like IMS Registration TPR, LTE Attach, GSM-LU, SMS , MO&MT Calls• Done Major activities of IMS Migration from Mavenir to Nokia from HSS side• Analysis of SIP/Megaco/ISUP traces, for troubleshooting of customer complaints.• Routing Management. Show less

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  _VOIS

  Oct 2017 - now

  Deputy General Manager

  Managing team of 40+ engineers including SMEs/TLs/Managers & responsible for First & Second line operations, planning and execution of complete RCS & VAS Projects, Core competencies, knowledge and experience• Day to Day working on protocols like SIP, MSRP, Diameter, SS7, SIGTRAN, MSRP, RTP.• Versed in core mobile technologies such as on EPC/VoLTE/ IMS; messaging technologies such as RCS, SMSC, STP, Location Services, SUPL, MLP; voice/data roaming architectures and protocols.• Working knowledge & good understanding of mobile wireless technologies (IMS, Volte, SS7, GSM, UMTS-CS&PS) & good exposure to 3GPP. • Working knowledge of telecom protocols (SIP, SS7, SMPP, MSRP, Diameter, RTP, SRTP, ICE, SCTP) Good understanding of L2, L3 & L4 network protocols such as TCP/IP. • Working knowledge on IMS nodes (P-I-S-CSCF, TAS, HSS, ENUM and DNS). Configuration and troubleshooting on Oracle A&I-SBC, CSM & SLRM etc.• Creating resource plan and ensure the availability of support persons on 24*7 basis.• Getting involved with clients/stakeholders to agree and prepare test plan.• Resources estimation, allocation and preparing test budget and provide costing details with customer.• Assistance to engineers for escalated technical issues got those triaged and finally resolved.• Participated in Daily/weekly customer meetings for escalated issues to provide faster resolution.• Prepared and delivered technical presentations and demonstrations to customers.• Acted as subject matter expert (SME) of VOIP/IMS domain in order to resolve technical issues.• Hosted regular meetings with L3 team to follow up on escalated issues and got fix for those.• Defining multiple operation processes, create documents for same and got those sign-off by stakeholders to run operations.• Responsible for creating yearly goals for team members and do performance review in the end of that FY. Show less