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Diameter Credit Control Application

Diameter Credit Control Application. draft-hakala-diameter-credit-control-06.txt IETF 56 john.loughney@nokia.com Harri Hakala / Jukka-Pekka Koskinen / John Loughney / Leena Mattila / Marco Stura. Motivation.

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Diameter Credit Control Application

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  1. Diameter Credit Control Application draft-hakala-diameter-credit-control-06.txt IETF 56 john.loughney@nokia.com Harri Hakala / Jukka-Pekka Koskinen / John Loughney / Leena Mattila / Marco Stura

  2. Motivation • On-line / real-time / pre-paid accounting or has become very popular in mobile networks. • SS7 based protocols and IN–based solutions approach are used • A new IP-based accounting protocol is urgently needed to support credit based accounting for Internet services • Diameter base accounting is not sufficient for real-time pre-paid services. • By adding an optional credit-control application, theDiameter base accounting the needed functionality the can be provided by ‘existing’ AAA infrastructure.

  3. Overview • A general purpose real-time accounting protocol. • Enhance diameter accounting messages (ACR/ACA): • with new mandatory controlling AVPs • application defined state machines (session &event based state machines for client and server) • application specific fault handling • No new commands. • Supports On-line credit control with credit reservation (using session records) and operations (using event records), such as: • Price Enquiry • Balance Check • Direct Debiting • Refund

  4. Updates • Now a working group document • Draft now officially included in 3GPP specifications - TS 32.225. • Major changes: • A server or client is not required to implement all functionality in the CCA. • Optionality has been clarified in the draft • Unknown/unsupported value responded with error Subscription-Id-Type • Unknown AVPs can be ignored, i.e. 'M'-bit removed from AVP Flag table • New Result-Code value 'DIAMETER_RATING_FAILED'.

  5. To Do • Editorial clean-up; fix some keywords; clarification on some points. • Fix all ’ID-nits’ • Clarify with 3GPP if draft meets their needs. • Nearly ready for WG last call?

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