Network Working Group H. Hakala Request for Comments: L. Mattila Category: Standards Track Ericsson J-P. Koskinen M. Stura J. Loughney Nokia. For more information, see the Diameter Credit-Control Application protocol specification detail: Opens a new window. RFC Diameter Credit-Control Application August 5. Click here to download RFC TXT format PDF format coming soon. DCCA and Gy.

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The prepaid model has been shown to be very successful, for instance, in GSM networks, where network operators offering prepaid services have experienced a substantial growth of their customer base and rfd. In this example the server grants the client all the units it requested. Session state is not maintained. For session based credit-control, both the credit control client and the credit-control server are required to maintain credit-control session state.

An event-based credit control process uses events as charging mechanism.

Diameter Credit-Control Application

Diameter Credit-Control Applicationis a networking protocol for Diameter application used to implement real-time credit-control for a variety of scca user services. In the 40066 case, the interface between the Service Element and the Diameter credit- control client is outside the scope of this specification. The Service Element may include the Diameter credit-control client, or another entity e. Messages with the “E” bit set are commonly referred to as error messages.

Retrieved 30 April Service specific authorization and rff is out of the scope. The application can be an authentication application, an accounting application, or a vendor-specific application. However, the detailed architecture of the credit-control system and its interfaces are implementation specific and are out of scope of this specification.

It is used between the Diameter credit-control client and the credit-control server to request credit authorization for a given service.

RFC – part 1 of 5

The general principles for sending rating parameters are as follows: For quota management the client sends CCR rf the server requesting units and reporting consumption. Service Event An event relating to a service provided to the end user. The ” R ” Cdca bit — If set, the message is a request.

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In addition, it is necessary to check that the end user’s account provides coverage for the requested service prior to initiation of that service. It is also possible for the server to tell the client how long the grant is valid, in which case the client is expected to send an update when the grant timer expires. The first interrogation is used to reserve money from the user’s dccw and to initiate the process.

Prepaid services are now cropping up in many other wireless and wire line based networks. The Hop-by-Hop Identifier is an unsigned bit integer field in network byte order that is used to match the requests with their answers as the same value in the request is used in the rfx. The values are for permanent, standard commands allocated by IANA.

During interrogation money is reserved 4060 the user account. Upon receipt of a successful credit authorization answer, the credit-control client allows service delivery to the end user. This method can be used to avoid unnecessary conversions 40006 an existing data format to an AVP format. These operations are accomplished with the one- time event. The Diameter protocol was initially developed by Pat R.

By using this site, you agree to the Terms of Use and Privacy Policy. The name is a play on words, derived from the RADIUS protocol, which is the predecessor a diameter is twice the radius. Also, Diameter Redirect agents that refer credit-control clients to credit-control servers and allow them to communicate directly can exist.

Diameter (protocol)

Service-Specific Rating Input and Interoperability It is used between the credit-control server and the Diameter credit-control client to acknowledge a Credit- Control-Request command. Credit-Control Application Overview The credit authorization process takes place before and during service delivery to the end user and generally requires the user’s authentication and authorization before any request is sent to the credit-control server. It is set when resending requests not yet acknowledged as an indication of a possible duplicate due to a link failure.


Diameter credit- control server.

Diameter Credit-control Server Rc Diameter credit-control server acts as a prepaid server, performing real-time rating and credit-control. The scope of this specification is the credit authorization.

The credit-control server is required to maintain session state for session-based credit- control. Protocol transparent Diameter relays can exist between the credit- control client and credit-control server.

Distribution of this memo is unlimited. Upon receipt of a successful credit authorization answer with a certain amount of credit resources, the credit-control client allows service delivery to the end user and starts monitoring the usage of the granted resources. AA request commands are defined dccz service specific authorization applications e. Additionally, application specific state machines can be introduced either later or at a higher abstraction layer. However, for real-time credit-control, these authorization and accounting models are not sufficient.

It provides a general solution to real-time cost and credit-control. The message flows are in general driven by the control-point asking for units and the server granting them. Some common Diameter commands defined in the protocol base and applications are:. Therefore, it is assumed that a Diameter credit-control server will provide rfcc only for Diameter credit-control clients that have agreed beforehand as to the content of credit-control messages.

This page was last edited on 19 Octoberat