One day or multiple days online or onsite group training is provided on the followings:
Provide the basic knowledge of VoLTE architecture, VoLTE functions, VoLTE Pre-call functions and Protocols for Voice Communications over packet based networks.
Fundamentals of call receiving, call signaling, policy control and call management through IMS Core are discussed with call flow diagrams. Communication with PCRF are discussed in details.
Purpose of IMS Core, CSCFs and communication between the network elements inside and outside the core are discussed. IMS registration procedures are discussed with illustration.
How IMS supports other advance applications is discussed. Knowledge on communication between IMS core elements and Voice Application Server (VAS) is delivered.
End-to-end Signaling and RTP call flows are discussed in details. Signaling system and procedure between EPC, IMS Core and the Application Servers are provided.
Most of the important protocols, e.g. GPRS Tunneling Protocol User Plane (GTP-U), GTP-U Transport, Medium Access Control (MAC), Non-Access-Stratum (NAS) Protocol, Packet Data Convergence Protocol (PDCP), Radio Link Control (RLC), and Radio Resource Control (RRC) etc. are discussed.
Knowledge of Roaming Process over VoLTE in the control plane and user plane architecture is provided. VoLTE Roaming Architecture as per GSMA IR.88 is discussed