IMS and PCC System Engineering

With the advent of technologies such as LTE and 5G, next generation services and charging are now being controlled by IMS and PCC functions; a critical element in a service provider’s requirement to support seamless and rich multimedia services. For those needing to gain an understanding of this service overlay, this course provides a comprehensive technical explanation of how this is achieved. Topics covered include IMS architecture, protocols (SIP and Diameter), Registration, Policy Control and Session Establishment.
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Section 1 - IMS Concepts and Architecture
Section 2 - IMS Protocols
Section 3 - IMS Registration
Section 4 - Policy and Charging Control Fundamentals
Section 5 - IMS Session Establishment

Topic areas covered include:

  • IMS Drivers:
    • Service Drivers, Open Systems and Seamless Mobility.
  • IMS Fundamental Principles.
  • Specifications and Standards.
  • Interworking with Access Networks.
  • Positioning the IMS.
  • Control and User Planes.
  • IMS Terminal Device Requirements.
  • Key Nodes:
    • P-CSCF, S-CSCF, I-CSCF, HSS and Application Servers.
  • Additional Architectural Elements:
    • PSTN Breakout - BGCF, MGCF, MGW and Signalling Gateway.
    • Interworking - IBCF and Session Border Controllers.
    • Multimedia - MRFC, MRFP, Media Servers and Brokers.

Topic areas covered include:

  • SIP Fundamentals:
    • Methods, network elements, protocol format.
  • Diameter Fundamentals:
    • Routing, Header Format, Messages and AVPs.

Topic areas covered include:

  • IMS Initial Procedures:
    • IP-CAN Connectivity, P-CSCF Discovery.
  • IMS Identities:
    • IMPU, IMPI, GRUU, PSI.
  • Security considerations.
  • Service Profiles and ifc (Initial Filter Criteria).
  • Detailed Registration Process:
    • Including Implicit Registration.
  • Activity: detailed analysis of the IMS Registration procedure using Mpirical’s NetX.

Topic areas covered include:

  • QoS in IP Networks.
  • Precursors to PCC:
    • 3GPP Release 5 SBLP and Release 6 FBC.
  • Policy and Charging Control:
    • PCC Architecture, Principles, PCC and SAE.
    • PCEF, PCRF, OCS, OFCS, SPR, Gx, Rx.
  • PCC Binding Mechanism:
    • Session Binding, Rule Authorization, Bearer Binding.

Topic areas covered include:

  • Session Policy and Policy Enforcement:
    • PCC and the Rx Interface.
  • SDP Offer/Answer Model.
  • IMS Session Establishment.
  • Charging Concepts:
    • Offline Charging, Online Charging and Charging Identifiers.
  • Activity: detailed analysis of an IMS Session Establishment procedure using Mpirical’s NetX.

The Institute of Telecommunications Professionals (ITP)

The ITP is the UK’s leading independent institution for people who work in telecommunications.  It is dedicated to promoting the professional development of members through Professional Registration, training, mentoring and qualifications. The ITP collaborates with regulators, government associations and other leading bodies on projects that are important to the future of the industry. It has worked with businesses including; BT, Cable & Wireless Worldwide, Alcatel-Lucent, Huawei and Vodafone.  Find out more about The ITP and how you can become a member.

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