Wi-Fi Calling

Often associated with VoLTE, Wi-Fi Calling is the means by which service providers can support seamless mobility between their LTE and Wi-Fi networks, whilst maintaining voice services. This course builds on the LTE and Wi-Fi System Engineering courses and explains in detail the enhancements that need to be made to the network for VoWi-Fi, before describing how a call is established across Wi-Fi using the services of the EPC and IMS.

Click on the links below for a more detailed breakdown of each module.


  • Wi-Fi Calling Architecture Fundamentals
  • Wi-Fi Calling Architecture Fundamentals - In Principle
  • Mobility Mechanisms
  • Host Based Mobility - In Principle
  • Network Based Mobility - In Principle
  • Network Architecture
  • Untrusted Non-3GPP Access - In Principle
  • IP Multimedia Subsystem - In Principle
  • Roaming
  • Roaming Architectures - In Principle
  • Resources & Test of Understanding
  • Reference Document - Wi-Fi Calling Architecture
  • Test of Understanding - Wi-Fi Calling Architecture
  • Initial Procedures Fundamentals
  • Initial Procedures Fundamentals - In Principle
  • Network Discovery and Selection
  • Network Discovery - In Principle
  • Accessing the Wi-Fi Network - In Principle
  • Initial Attach
  • IKEv2 and IPSec - In Principle
  • EAP-AKA - In Principle
  • Session Creation and Management - In Principle
  • Resources & Test of Understanding
  • Reference Document - Initial Procedures
  • Test of Understanding - Initial Procedures
  • Making and Receiving Calls Fundamentals
  • Making and Receiving Calls Fundamentals - In Principle
  • IMS Registration
  • IMS Registration - In Principle
  • Mobile Originated Call Setup
  • Mobile Originated Call Setup - Part 1 - In Principle
  • Mobile Originated Call Setup - Part 2 - In Principle
  • Interworking with the PSTN - In Principle
  • Mobile Terminated Call Setup
  • Mobile Terminated Call Setup - Part 1 - In Principle
  • Mobile Terminated Call Setup - Part 2 - In Principle
  • Interworking with the PSTN - In Principle
  • Emergency Calls and Instant Messaging
  • Emergency Calls and Instant Messaging - In Principle
  • Resources & Test of Understanding
  • Reference Document - Making and Receiving Calls over Wi-Fi
  • Test of Understaning - Making and Receiving Calls over Wi-Fi
  • Mobility and Interworking Fundamentals
  • Mobility and Interworking Fundamentals - In Principle
  • Wi-Fi Mobility
  • Wi-Fi Mobility - In Principle
  • Cellular Mobility
  • Wi-Fi to LTE Handover - In Principle
  • LTE to Wi-Fi Handover - In Principle
  • Roaming
  • Wi-Fi Calling and Roaming - In Principle
  • Resources & Test of Understanding
  • Reference Document - Mobility and Interworking
  • Test of Understaning - Mobility and Interworking
  • WiFi Offload
  • IMS and PCC System Engineering
  • LTE System Engineering
Buy Now Enquire Now Download PDF
Duration 6 hours
CPD Learning Credits 6

Price £85.00 (for 6 months access)

Working together with