VoLTE System Engineering

As IMS based VoLTE becomes the prevalent voice service enabler for 4G, this course will cover the key elements of the end to end operation of a VoLTE network. Topics covered include the VoLTE architecture, with focus on the main technologies required, namely LTE, PCC and IMS. Procedural aspects are also covered, from initial registration, through to call establishment and PSTN interworking. Finally, complimentary technologies such as ICS, SR-VCC and VoWi-Fi will be examined.
Click on the links below for a more detailed breakdown of each module.


  • Deploying VoLTE
  • LTE Access Network
  • IMS Call Control Network - Part 1
  • IMS Call Control Network - Part 2
  • PCC Architecture
  • End to End VoLTE Architecture
  • Reference Document - VoLTE End to End Architecture
  • Test of Understanding - VoLTE End to End Architecture
  • SIP Basic Concepts
  • SIP Message Exchange
  • Diameter Base Protocol
  • Diameter Message Exchange
  • LTE Key Concepts Associated with VoLTE
  • PCC Key Concepts Associated with VoLTE
  • Reference Document - VoLTE Foundation Technologies
  • Test of Understanding - VoLTE Foundation Technologies
  • Identities Used in VoLTE
  • USIM Based Registration
  • Overview and Initial Stages
  • Part 1 - Initial Registration
  • Part 2 - IMS Authentication and Key Agreement
  • Part 3 - Registration Completion
  • Service Configuration
  • Reference Document - VoLTE Initial Procedures
  • Test of Understanding - VoLTE Initial Procedures
  • VoLTE Media
  • VoLTE Call High Level Signalling Flow
  • Delivering the SDP Offer - Part 1
  • Delivering the SDP Offer - Part 2
  • Delivering the SDP Answer - Part 1
  • Delivering the SDP Answer - Part 2
  • Finalizing the Call Establishment
  • VoLTE Call Termination
  • Reference Document - VoLTE Call Procedures
  • Test of Understanding - VoLTE Call Procedures
  • Interworking Key Concepts
  • Soft Switching and GCP
  • ENUM
  • VoLTE to PSTN CS Procedures
  • PSTN to VoLTE CS Procedures
  • Emergency Services
  • Reference Document - VoLTE to Legacy Voice Interworking
  • Test of Understanding - VoLTE to Legacy Voice Interworking
  • ICS and SRVCC Concepts
  • ICS Architectural Considerations
  • ICS Call Establishment (Mobile Originated)
  • ICS Call Establishment (Mobile Terminated)
  • SRVCC Architectural Considerations
  • VoLTE SRVCC Procedures (Release 10 Onwards)
  • Reference Document - ICS and SRVCC
  • Test of Understanding - ICS and SRVCC
  • VoWi-Fi Fundamentals
  • VoWi-Fi Network Architecture
  • VoWi-Fi Initial Procedures - Part 1
  • VoWi-Fi Initial Procedures - Part 2
  • VoWi-Fi Call Flows
  • Interworking Considerations - Wi-Fi to LTE Handover
  • Interworking Considerations - LTE to Wi-Fi Handover
  • Reference Document - VoWi-Fi
  • Test of Understanding - VoWi-Fi
  • LTE System Engineering
  • Rich Communication Services
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Duration 12 hours
CPD Learning Credits 12

Price £300.00 (for 6 months access)

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