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.

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.

Required Technical Skills

IMS/VoLTE Knowledge

- Positive 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.)

Required Qualifications

- Bachelors Degree in Electronics, Telecommunications, Computer Science, or related field.
- Knowledge of LTE/VoLTE and IMS technologies.
- Understanding of telecom operations processes.

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.

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

Disclaimer: This job posting has been aggregated from external source. Role details, content, and availability are subject to change. Applicants are advised to confirm the latest information directly on the company website before applying.

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