 
						VoLTE IMS background or trace analysis specialists
4 days ago
CPD Operations Engineer – L3
Location:
Chennai (On-site / Hybrid)
Domain:
Telecom Core Network Operations / Emergency Call Support
Ideal Candidate Summary
A
senior-level Core Network Operations Engineer
with
5–10 years of experience
in managing
emergency call (E000/000) operations
,
Core & IMS troubleshooting
, and
regulatory compliance
. The candidate should have hands-on expertise in
VoLTE, IMS signaling
, and
trace analysis
using tools such as
NetScout, Splunk, NBA, and Ni4cc
.
Must be capable of
root cause analysis for emergency call failures
, coordinating with
Care, RAN, Core, and Handset teams
, and ensuring compliance with
ACMA/LEA
regulatory frameworks.
Key Technical Skills
Core Domain & Protocols
- Deep understanding of 4G/5G Core Network Architecture
- Call flow expertise for Voice, SMS, Data, VoLTE, and VoWiFi
- Proficient in IMS/SIP signaling (INVITE, REGISTER, BYE, emergency session)
- Familiarity with PLMN, attach procedures, roaming, and fallback mechanisms
Emergency Call Support (E000/000 / 911)
- Monitoring & troubleshooting emergency call failures using NetScout, Splunk, NBA, Ni4cc
- Performing network activity checks for failed E000 events (Voice, Data, SMS)
- Coordinating welfare checks and regulatory reporting (ACMA/LEA compliance)
- Cross-operator validation for camp-on (cross-network) emergency calls
Tools & Technologies
- Monitoring/Tracing: NetScout, Ni4cc, NBA, Splunk, Wireshark
- Ticketing / ITSM: Helix, ServiceNow
- Protocols: SIP, Diameter, MAP, CAP, RTP
- Vendors: Nokia, Ericsson (Core & IMS preferred)
Soft & Analytical Skills
- Strong incident/problem management (ITIL framework)
- Excellent stakeholder communication (internal & external teams)
- Calm under pressure, with ownership-driven problem solving
- Clear documentation and reporting mindset
Mandatory Skills
- E000 / Emergency Call Handling
- VoLTE IMS & Core troubleshooting (4G/5G)
- Tools: NetScout, Splunk, Wireshark, NBA, Ni4cc
- SIP / Diameter trace analysis
- Regulatory (ACMA / LEA) compliance awareness
Good-to-Have Skills
- RAN (coverage-level) troubleshooting
- Exposure to Transport and IP domains
- Helix / ServiceNow ticket management
- Excel-based report automation and analytics
- Nokia MSP / Ericsson Core operational experience
Qualifications
- Bachelor's in Electronics, Telecommunications, or equivalent
- 5–10 years of experience in Core Network Operations / Service Assurance / Emergency Call Support (E000 / 911)
Skills: troubleshooting,operations,netscout,emergency first response instruction,splunk,on-call support,volte,trace,core network
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