Brief presentation for ims for be updated with NGN

1. IMS
( IP Multimedia Subsystem )
Presented by: Naouar ilies

2. Outline
Introduction
Next Generation Network (NGN)
Concept and architecture of NGN
IP Multimedia Subsystem
Architecture and entities of IMS
IMS Call
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3. Introduction
With the model defined by the operators, the telephone
network could not provide any other services than the
scheduled ones.
So, the emergence of a new concept, the intelligent
network ( “Intelligent Network IN”)
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4. Next Generation Network
The Challenge of NGN should provide all these criteria
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5. Next Generation Network Concept
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6. Evolution of Technology
IMS
IP 3G Wireless 3G wireless + IP ++
PSTN Wireless Internet W-CDMA Standard Services
Circuit switched – VoIPa GPRS/UMTS Platform
Circuit switched
Analog – Instant Messaging Converged
Digital Analog Applications &
– Web Applications Content
SS7 Digital
ISDNaa Access
2G (GSM
Independence
& CDMA
ANSI-41)
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7. IMS Architecture
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8. IMS Entities
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9. SIP Protocol
•Session Initiation Protocol is a protocol
standardized by the IETF.
•Designed to establish, modify and terminate
multimedia sessions
•Does not convey the information exchanged
during the session such as voice or video
•RTP provides the most audio and video
sessions
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10. IMS Call: SIP & IMS
•SIP has been chosen by the IMS for its simplicity
and its specific role.
•Also,in the instant messaging, it will detect the
presence or not of the subscriber.
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11. Thank you for your
attention
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