Position Details: Ericsson IMS/VoLTE L1 Operations Engineer

Description:

Job Description: Ericsson IMS/VoLTE L1 Operations Engineer

IMS/VoLTE L1 Operations Engineer

Experience

1-5 Years

Location: Chennai / Noida

Job Summary

We are seeking an IMS/VoLTE L1 Operations Engineer responsible for the 24x7 monitoring, fault management, alarm handling, and first-level troubleshooting of Ericsson IMS and VoLTE network elements. The candidate will ensure network availability, service continuity, and adherence to agreed SLAs.

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Key Responsibilities

Network Monitoring & Operations

• Perform 24x7 monitoring of Ericsson IMS and VoLTE network elements.
• Monitor alarms, events, and service KPIs using Ericsson OSS/NMS tools.
• Identify, analyze, and report network faults impacting IMS/VoLTE services.
• Conduct first-level troubleshooting and restoration activities.

Incident Management

• Open, track, and manage trouble tickets as per operational procedures.
• Escalate critical issues to L2/L3 support teams and vendors.
• Ensure timely incident resolution within SLA timelines.
• Participate in bridge calls during major incidents.

Fault Management

• Analyze alarms related to:
  • CSCF (P-CSCF, I-CSCF, S-CSCF)
  • HSS
  • MMTel
  • SBC/IBCF
  • MGCF
  • EPG/EPC interfaces
• Perform alarm correlation and impact assessment.
• Verify service restoration after issue resolution.

Service Assurance

• Monitor VoLTE service KPIs and performance indicators.
• Support daily health checks and operational reports.
• Ensure availability and stability of IMS services.
• Assist in preventive maintenance activities.

Documentation & Reporting

• Maintain incident logs and operational records.
• Prepare shift handover reports.
• Generate daily, weekly, and monthly operational reports.
• Update knowledge base and troubleshooting documents.

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Required Technical Skills

IMS/VoLTE Knowledge

• Good understanding of:
  • Ericsson IMS Architecture
  • VoLTE Call Flow
  • SIP Protocol
  • Diameter Protocol
  • LTE/EPC Fundamentals
  • IMS Registration Procedures
  • Voice Call Setup and Termination

Ericsson Platforms

Experience or exposure to:

• Ericsson IMS
• HSS
• CSCF Nodes
• SBC/IBCF
• MGCF
• Ericsson OSS-RC (preferred)

Protocol Knowledge

• SIP
• Diameter
• DNS
• TCP/IP
• SCTP
• LTE Signaling Basics

Monitoring Tools

• Ericsson OSS
• Alarm Monitoring Systems
• Ticketing Tools (Remedy, ServiceNow, Jira, etc.)

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Required Qualifications

• Bachelor's Degree in Electronics, Telecommunications, Computer Science, or related field.
• Knowledge of LTE/VoLTE and IMS technologies.
• Understanding of telecom operations processes.

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Preferred Skills

• Experience in NOC/SOC telecom operations.
• Understanding of ITIL processes.
• Basic Linux/Unix command knowledge.
• Excellent analytical and problem-solving abilities.
• Strong communication and customer-handling skills.

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Key Competencies

• Incident Management
• Fault Analysis
• Alarm Handling
• SLA Management
• Shift Operations
• Team Collaboration
• Customer Focus

Typical Technologies in Scope

• Ericsson IMS Core
• VoLTE
• SIP/Diameter
• HSS
• CSCF
• SBC/IBCF
• LTE/EPC Network

 

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