Roles and functions of IMS Core, Policy Manager (PM), Subscription Database (SD)
Role and functions of the different types of Call Session Control Functions (CSCF): Proxy CSCF, Interrogating CSCF, Serving CSCF
Interaction with non-IMS networks: roles and functions of Signalling Gateway (SG), Border Gateway (BGW), Media Gateway (MGW), Breakout Gateway Control Function (BGCF), Media Gateway Control Function (MGCF)
User Equipment (UE) and Application Server (AS) as Application endpoints
Basic IMS connectivity scenarios: UE ↔ AS, AS ↔ AS, IMS ↔ non-IMS user
Responsibilities of IMS Core functions in roaming scenarios

IMS Subscription identification: IMS Public User Id (IMPU), IMS Private User ID (IMPI)
Service handling settings: Service Profile, initial Filter Criteria
IMS Signalling: Session Initiation Protocol (SIP), Diameter and HTTP protocols
Basic IMS traffic cases: IMS Registration, Originating and Terminating Session Setup
Establishment of User Plane resources with the support of the Policy Manager

Policy and Charging Control in IMS, PCC
Roles of the Policy Manager, especially the Policy and Charging Rules Function (PCRF) and Policy Control Function (PCF), including the division into Home and Visited network responsibilities in roaming scenarios
Quality of Service Class Identifier (QCI) and 5G Quality of Service Identifier (5QI) values for resource definition in 4G and 5G as the IP-CAN

Security procedures for UE authentication and authorization: IPCAN security, 5G slice security, IMS security,
IMS Authorization and Key Agreement (AKA) as the IMS access security

About the training

Includes