Siva Balaji Chellakani

Experience

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  Tata Communications transformation Services

  Aug 2010 - Sept 2014

  NOC-Switch Engineer

   Operations of Nortel DMS 100, Nortel CS2K, Ericsson AXE 10, PVG. Daily routine check up on the switches. Inter switch Routing Check Handling of Ticketing Systems- CIM, Chimarea. Proactive monitoring On PRI, BRI and Interconnect links To provide solutions to complex problems that require substantial analysis and investigation related to network and system performance.  Analyzing and troubleshooting the destination unreachable issues (National & International). Root cause Analysis for repeat faults Coordinate with Field Engineers and Other OLO.  Network Surveillance in 24x7 environments. Managing 3 NOC domains - IP, Transmission & Voice doing service assurance and service fulfillment activities.  Acting as 2nd level of escalation for NOC Coordinate with Level 3 and Level 1 Engineers Show less

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  Vodafone Global Services

  Sept 2014 - Jun 2016

  Senior Executive

   Spearheaded efforts across managing Vodafone /Cable & Wireless Worldwide NLD & WAN Network for UK. Handling Trouble Tickets in remedy related to PRI, BRI, VPN, Centrex issue.  Handling escalations(Level1 & Level2) Very good hands-on experience in Remedy tool. Defining and changing of all type of Soft Switch related data like B-number analysis table, Route parameters, forwarding analysis, Access barring data, Routing case tables etc. as and when required. Taking SS7, ISUP and Ethereal traces and providing resolution for critical issues Trunk monitoring and Optimizing network as per the requirements given. Monitoring all links and network devices. Managing Nortel DMS 100 switches and System X switches using ProComm and CMAP. Monitoring, maintaining & troubleshooting WAN links like E1, Leased line circuits, ISDN – PRI, BRI links for backup.  Handling all major translation and transmission issues. Troubleshooting of Voice Circuits at Trunk Group level by accessing Network elements involved in circuit path and coordinating with the carriers to check for changes in signaling, switching or any transmission equipment. Coordinating with carriers by working on equipments  Coordinating of repair activities with Field Organizations to solve network problems. If necessary escalate Network Trouble Tickets to suppliers of infrastructure. Responsible for customer Service Restoration, escalation support via phone and emails. Responsible for POI Interconnect testing, traffic management and maintaining the quality of the wholesale voice traffic. Managing Network infrastructure using ITMS and Call store tools. Prepare Audit and SLA reports on monthly basis. Providing support for remote upgrades & update. Configuration and troubleshooting of Centrex service in Nortel DMS 100 switches. Carrying out feature/configuration changes (Adding or removing barring) on the Switches. Show less

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  Hewlett Packard Enterprise

  Jun 2016 - Mar 2018

  ITO Service Delivery Consultant III

  Responsible for the remote configuration of customer devices for Monitoring/Alarming Services and interoperation with the APCS tools.The STE also test connectivity to devices after the VPN connection was established by Avaya VPN Team and VPN customer engineers.

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  Colt Technology Services

  Mar 2018 - now

  • TAC Consultant

    Nov 2023 - now

  • Senior Team Lead

    Mar 2018 - Nov 2023