Core & IMS Learning

Mastering the Core: 5G, IMS, and Beyond

Deep-dive technical insights and architectural blueprints for the modern network engineer.

The Engineering Knowledge Hub

Explore all our Courses


VoLTE & IMS

$15/month

Deep dive into IMS, signaling, KPIs, failures, and real operator troubleshooting scenarios


5G Core

$15/month

Understand SBA, AMF, SMF, UPF, service flows, mobility, sessions, and deployment challenges


SIP Protocol

$15/month

Understand SIP messages, headers, timers, responses, and real-world signaling failure scenarios


VoWiFi

$15/month

Understand ePDG, IMS integration, call flows, security, KPIs, and real-world failure scenarios


EPC and PS Core

$15/month

Deep dive into attach, bearer setup, GTP, QoS, mobility handling, and performance optimization


CS Core

$15/month

Deep dive into GSM and UMTS CS procedures, call flows, and real troubleshooting scenarios


SS7 Signaling and SIGTRAN

$15/month

Deep dive into legacy SS7, IP transport, protocols, interfaces, and troubleshooting techniques


CSFB

$15/month

Deep dive into LTE to CS fallback signaling, MSC coordination, paging, and failure scenarios

Smart Bundles - Best Value

Maximum value packages with significant savings

VOIP & SIGNALING

$20/month

Save $10/month

The fundamentals of protocol communication.
  • SIP, SS7 & SIGTRAN 
  • SIP Call Flows, Timers, Headers & Error Handling
  • SS7 Architecture, MAP, ISUP & Call Scenarios
  • SIGTRAN Protocol Stack & Transport Mechanisms
  • Interworking Between SIP, SS7 & Legacy Networks

Mobile Core Pro

$30/month

Save $15/month

The complete "Heart of the Network" package.
  • 5G Core, PS & EPC, CS Core
  • 5G Core Architecture, Procedures & Key Interfaces
  • EPC & PS Core End-to-End Call Flows
  • CS Core Fundamentals & Legacy Interworking Scenarios
  • Mobility, Sessions & QoS Optimization Across Generations

Voice Master

$40/month

Save $20/month

End-to-end modern carrier voice solutions.
  • VoLTE, SIP, CS Core, VoWiFi
  • End-to-End Call Flows Explained
  • Signaling, Timers, Errors & Troubleshooting
  • CS Core, CSFB & SRVCC Interworking Scenarios
  • Voice Quality KPIs & Optimization Across Networks

Complete Telecom

60/month

Save $60/month

The "Best Value" for a total career transformation.
  • 5G Core, VoLTE, SIP, PS & EPC, CS Core, VoWiFi, SS7 & SIGTRAN, CSFB
  • End-to-End Mobile Voice/Packet Core Network Technologies
  • VoLTE, VoWiFi, CSFB & Legacy Interworking Explained
  • 5G Core, EPC, PS & CS Architectures Demystified
  • SIP, SS7 & SIGTRAN Signaling and Call Flows
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