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Senior Specialist

Infinite Computer Solutions · Noida

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Collected role description

Role overview

Senior Specialist at Infinite Computer Solutions

L3 Technical Support

The role involves handling complex issues escalated from L1/L2 teams, ensuring service continuity, and providing expertise for incident, problem, and change management.

Responsibilities

  • Provide advanced troubleshooting for IMS and CS Core issues (VoLTE, VoWiFi, MO/MT call failures, SMS failures, Handover failures).
  • Analyze call traces (SIP, Diameter, ISUP, MAP, CAP) and perform deep-dive RCA.
  • Support high-severity (P1/P2) incidents and ensure timely resolution.
  • Handle escalations from Tier-1/2 NOC for CS/IMS nodes (MSC/MSC-S, MGW, HLR/HSS, STP, MTAS, CSCF, SBG, ENUM, DRA, IBCF/TrGW).
  • Handle SIP registration issues, VoLTE attach failures, IMS bearer issues, and interworking problems.
  • Optimize VoLTE/IMS call flows, QoS, and media negotiation.
  • CS Core Expert
  • Support legacy CS Core elements:
  • MSC, MSC-S, MGW, HLR, STP, VLR
  • Resolve circuit-switched issues (2G/3G call setup, supplementary services, roaming failures).

Employment details

  • Location: Noida

Additional role details

  • T3 Support – IMS /CS CORE EXPERT
  • Role Summary
  • The L3 IMS/CS Core Expert is responsible for advanced troubleshooting, performance optimization, and end-to-end support of IMS and Circuit Switched (CS) Core network elements.
  • With these activities, you will have a great impact on our business: