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IMS presentation

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Brief presentation for ims for be updated with NGN

Brief presentation for ims for be updated with NGN

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  • 1. IMS( IP Multimedia Subsystem )Presented by: Naouar ilies
  • 2. OutlineIntroductionNext Generation Network (NGN)Concept and architecture of NGNIP Multimedia SubsystemArchitecture and entities of IMSIMS Call 2
  • 3. IntroductionWith the model defined by the operators, the telephonenetwork could not provide any other services than thescheduled ones.So, the emergence of a new concept, the intelligentnetwork ( “Intelligent Network IN”) 3
  • 4. Next Generation NetworkThe Challenge of NGN should provide all these criteria 4
  • 5. Next Generation Network Concept 5
  • 6. Evolution of Technology IMS IP 3G Wireless 3G wireless + IP ++ PSTN Wireless Internet W-CDMA Standard ServicesCircuit switched – VoIPa GPRS/UMTS Platform Circuit switchedAnalog – Instant Messaging ConvergedDigital Analog Applications & – Web Applications ContentSS7 DigitalISDNaa Access 2G (GSM Independence & CDMA ANSI-41) 6
  • 7. IMS Architecture 7
  • 8. IMS Entities 8
  • 9. SIP Protocol•Session Initiation Protocol is a protocolstandardized by the IETF.•Designed to establish, modify and terminatemultimedia sessions•Does not convey the information exchangedduring the session such as voice or video•RTP provides the most audio and videosessions 9
  • 10. IMS Call: SIP & IMS•SIP has been chosen by the IMS for its simplicityand its specific role.•Also,in the instant messaging, it will detect thepresence or not of the subscriber. 10
  • 11. Thank you for your attention 11

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