ELP 4006 ★★★★
The training gives detailed understanding of IMS architecture and its services as specified by 3GPP and OMA. Before any specific IMS description is held, a brief introduction to mobile networks and IP suite protocols and functions is given. In the next step participants are familiarised on how the multimedia, like voice and video, are transmitted over the IP networks maintaining the adequate quality. The discussion about IMS begins with the analysis of the basic architectural requirements and continues with the detailed description of each network node and the most important reference points. With this knowledge, the basic concepts related to IMS, such as IMS identification, PCC, service provisioning and the interaction between circuit-switched and packet-switched domains are explained.
The training covers the IMS service enablers as specified by 3GPP and OMA. Each service is explained with the emphasis on its architecture, protocols in use as well as its troubleshooting and optimisation parameters. In order to facilitate the assimilation of knowledge, the presented IMS services and procedures are complemented by examples of SIP messages exchanged in live networks.
Target audience – Who should attend and benefit
The training is addressed to telecom professionals working with technical project management, product management, hardware and software design, system engineering, testing and verification, network planning, operations and maintenance and technical sales of IMS systems, products and services.
Prerequisites – What you are supposed to know prior to the course
General knowledge about mobile networks and networking concepts is recommended. For background knowledge participation in IP in Mobile Backbone Network (ELP 0306) is recommended.
Course content – What you will learn
- Mobile networks architecture
- LTE/SAE overview
- What is the IP Multimedia Subsystem (IMS)?
- Fixed and mobile convergence
- Transition to all-IP solution
- Example of IMS services
- TCP/IP protocol suite
- IPv4 and IPv6 addressing and routing
- Transport layer protocols: UDP, TCP and SCTP
- Applications in TCP/IP Suite
- Multimedia over IP with SIP
- IMS codecs and codecs characteristics
- SIP methods, headers and responses
- SDP attributes with QoS
- RTP and RTCP functions and characteristics
- IMS architecture
- From CS to PS networks
- IMS requirements
- IMS-related entities and functionalities
- IMS reference points
- IMS concepts
- IMS protocols: SIP, SDP and DIAMETER
- IMS procedures: Registration and Session Initiation
- Identification in IMS
- Service provisioning
- Policy and Charging Control
- Mechanisms for controlling bearer resources
- IMS Centralized Services and Service Continuity
- What is Presence?
- Publishing/subscribing Presence
- Presence Authorization Rules
- Presence enhanced services
- Group Management
- What is Group Management?
- XML Configuration Access Protocol (XCAP)
- Common policy
- XCAP in resource lists
- Group Management by OMA
- MMTel and service management
- Push to Talk Over Cellular (PoC)
- PoC architecture
- PoC features
- PoC user plane
- Messaging in IMS
- Session-based messaging
- Messaging interworking
- Instant Messaging by OMA
- Architecture and principals of IMS Conferencing
- IMS Conferencing procedures
- Media Telephony (MMTel)
- MMTel communication
- Supplementary services
Duration – How long it takes
3 days which is equivalent to 18 hours of lecture.