Wi-Fi Calling

Wi-Fi Calling is closely associated with VoLTE, utilizing the same IMS infrastructure but obviously supporting the voice service across a different transport bearer network. This course will explain the commonalities and differences between Wi-Fi Calling (VoWiFi) and VoLTE, from an architectural and operational perspective. The security associated with the Wi-Fi network will be examined, as well as the high level call procedures. In conjunction with call procedures, the mobility and interworking aspects of the service will also be examined.
This course will contain the following sections:


  • Duration: 2 hours
  • Topic areas covered include
  • What is Wi-Fi Calling?
  • LTE Principles
  • Network Architecture
  • EPS Bearers
  • IMS Principles
  • Network Architecture
  • SIP
  • Supporting VoLTE
  • Wi-Fi Principles
  • Network Architecture
  • Joining a Wi-Fi Network
  • Emergency Calls
  • Instant Messaging
  • Duration: 1 hour
  • Topic areas covered include
  • Deployment Scenarios
  • Network Architecture
  • Untrusted Non-3GPP Access (GTP)
  • Roaming Architectures
  • Final Registration Phase
  • Mobile Originated Call Setup
  • VoWi-Fi to VoWi-Fi / VoLTE
  • VoWi-Fi to PSTN
  • Mobile Terminated Cal Setup
  • VoWi-Fi / VoLTE to VoWi-Fi
  • PSTN to VoWi-Fi
  • Emergency Calls
  • Instant Messaging
  • Duration: 2 hours
  • Topic areas covered include
  • Network Discovery and Selection
  • Network Discovery
  • Accessing the Wi-Fi Network
  • ePDG Selection
  • Initial Attach
  • IKEv2 and IPSec
  • EAP-AKA
  • Session Creation and Management
  • Duration: 2 hours
  • Topic areas covered include
  • IMS Registration
  • IMS Identities
  • Initial Registration Phase
  • Registration Security Phase
  • Final Registration Phase
  • Mobile Originated Call Setup
  • VoWi-Fi to VoWi-Fi / VoLTE
  • VoWi-Fi to PSTN
  • Mobile Terminated Cal Setup
  • VoWi-Fi / VoLTE to VoWi-Fi
  • PSTN to VoWi-Fi
  • Emergency Calls
  • Instant Messaging
  • Duration: 2 hours
  • Topic areas covered include
  • Wi-Fi Mobility
  • Wi-Fi to LTE Handover
  • LTE to Wi-Fi Handover
  • Wi-Fi Calling and Roaming
  • Home ePDG
  • Home PDN-GW
  • Visited PDN-GW
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Duration 3.5 hours
CPD Learning Credits 3

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