+48 22 208 28 61    szkolenia@cts.com.pl

IMS/RCS/RCS-e Technology

Teleusługi IMS/RCS/RCS-e

For a long time, IP Multimedia Subsystem (IMS) was nothing more than just a revolutionary idea to move all existing teleservices, including telephony to the PS domain of the mobile networ k and to create a vast variety of brand new teleservices totally based on end -to-end IP connectivity. Today, thanks to GSMA Rich Communication Suite (RCS) initiative, there is a clear path and agreement on how to turn IMS into practice. RCS ensures that th e same initial subset of IMS services will be introduced by all operators, infrastructure and terminal vendors and will work smoothly also in inter – operator scenarios. The course explains IMS architecture, signalling procedures and services paying a special attention to the solutions selec ted by GSMA RCS Releases 1 to 5.

Target Audience

The course is intended for technical mobile network staff and their manageme nt who plan to or already work on in troducing IMS/RCS/RCSe services.


The participants should have a basic knowledge on architecture of telecommunication network concepts as well as a general technical knowledge about IP networks and packet bearer services in 3GPP mobile systems.

Course content

1. Introduction
• What this is all about?
• 3GPP R5: Network Architecture
2. IP Multimedia Subsystem (IMS)
3. IMS Nodes and Functionality
• Call Session Control Function (CSCF)
– SLF & HSS Message Flow
• Media Resource Function (MRF)
– MRF Message Flow
– IMS to GSTN Call Setup
• Breakout Gateway Control Function (BGCF)
– BGCF Message Flow
• Application Servers (ASs
– Subscription to Event in AS
• Policy and Charging Control (R6), (R7), (R8)
– PCC Message Flow
4. Session Initiation Protocol (SIP) and Session Description Protocol (SDP)
• SIP – Multimedia Session Set-up
• P-CSCF Discovery
• IMS Registration
• IMS Session Set-up (MO)
• Authorization of QoS Resources
• IP Multimedia Flows’ IDs
• SIP Forking
5. H.248/MEGACO
• H.248 Message
• Media Gateway (MGW)
• H.248 Message Flow
6. DIAMETER Base Protocol
• DIAMETER Client/Server
7. IMS Services
• Rich Communications Suite (RCS)
8. Rich Communications Suite (RCS)
• Release 1
– Enhanced Address Book (EAB)
– Enriched Call
– Enhanced Messaging
– File Transfer
• Release 2
– Broadband Access To RCS Services
– Multiple Device Environment
– Network Address Book (NAB)
• Release 3
– Release 3’s Enhancements
• Release 4
– Release 4’s Enhancements
– Voice over LTE (VoLTE)
– RCS-e (Enhanced)
• Release 5
– IP Voice and Video Call
– Geolocation
9. RCS Network Architecture
10. RCS Device Mode and Clients Types
11. Capability Discovery
12. Multi Device Support
13. XDM Handling
14. RCS Services
• Messaging Service
• Interworking with Legacy Messaging
• File Transfer Service
• Content Sharing Services
• Social Presence Service
– My Presence
– My Presence Watchers
– Presence Architecture
– Presence Network Architecture
– Presence Message Flow
– Presence Message
• IP Based Voice and Video Services
• Geolocation Service
15. RCS Market