Essential Voice over WiFi training course description

This course provides a technical foundation in the use and implementation of Voice over WiFi. It covers the requirements of the IP Multimedia Subsystem, user equipment and network required to guarantee interoperable, high-quality IMS based telephony and conversational video services over WiFi access. WiFi in this context refers to a WLAN access to the EPC, via trusted and untrusted access interfaces (S2a and S2b). The IMS basic capabilities and supplementary services for telephony and real-time media negotiation, transport, and codecs. SIP messages are used to explain these topics and the necessary negotiations such as, preconditions, forking and early termination

What will you learn

• Describe the architecture of the IMS
• Describe basic SIP options
• Explain the call setup sequence of a VoWiFi call
• Explain handover to and from LTE
• Describe precondition requirements
• Describe CS handover requirements

Essential Voice over WiFi training course details

Essential Voice over WiFi training course contents

• 4G/LTE call process (VoLTE)
Overview of 4G systems
EPS Bearer requirements
Intrinsic WiFi/AAA registration/authentication
Support of generic IMS functions
SIP REGISTRATION
Authentication
Addressing
Standard 4G VoLTE call setup
• WiFi 6/6E deployments
QoS support in WiFi for voice services
Registration/authentication over untrusted WLANs
Alignment with the WiFi Alliance Certification programme
WiFi IP Access Network detection
WiFi IP Network selection
Non-3GPP Access Authentication & Security
Multiple PDN connections
APN considerations for SIP Signalling
ePDG for non-emergency voice
Network initiated disconnect
Mobility Management
P-CSCF Discovery
• Common Functionalities
IP Version
IP Address allocation
Emergency Services
Roaming considerations
• Selection of Call Setup captures and possible scenarios
PSTN to LTE
PSTN to WiFi
WiFi to Mobile etc

Learning path

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