The Diameter protocol is currently defined in the following IETF RFCs: Obsolete RFCs RFC , Diameter Credit-Control Application. RFC (part 1 of 5): Diameter Credit-Control Application. Please refer to the current edition of the “Internet Official Protocol Standards” (STD 1) for the. IETF RFC “Diameter Credit Control Application”. []. Void. []. IETF RFC , “Private Extensions to the Session Initiation Protocol (SIP) for the 3rd.

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Loughney Nokia August Diameter Credit-Control Application Status of This Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements.

Information on RFC » RFC Editor

These formats are observed in Credit-Control messages. It may also interact with business support systems.

The credit-control server is required to maintain session state for session-based credit- control. The ” T ” Potentially re-transmitted message bit — This flag is set after a link failover procedure, to aid the removal of duplicate requests.

Service A type of task performed by a service element for an end user. Otherwise the message is an answer.

Typical credit-control architecture There can be multiple credit-control servers in the system for redundancy and load balancing. The credit authorization shall be generic and applicable to all the service environments required to support prepaid services. After that the transport connection can diaketer disconnected. Upon receipt of a successful credit authorization answer, the credit-control client allows service delivery to the end user.


The Diamwter Identifier is an unsigned bit integer field in network byte order that is used to detect duplicate messages along with the combination of the Origin-Host AVP.

AA request AA request generically refers to a service specific authorization and authentication request. However, for real-time credit-control, these authorization and accounting models are not sufficient.

Credit-Control Application Related Parameters Session based credit-control A credit-control process that makes use of several interrogations: This is part of the basic protocol functionality and all stacks should support it and as such abstract from the connectivity related operations. When set the AVP Code belongs to the specific vendor code address space.

Additionally, application specific state machines can be introduced either later or at a higher abstraction layer.

These agents transparently support the Diameter credit-control application. Retrieved 30 April The name is a play on words, derived from dimaeter RADIUS protocol, which is the predecessor a diameter is twice the radius. This flag is set after a link failover procedure, to aid the removal of duplicate requests. Service-Specific Rating Input and Interoperability Rating The act of determining the cost of the service event.

The End-to-End Identifier is not modified by Diameter agents of any kind, and the same value in the corresponding request is used in the answer.

Diameter (protocol)

It is protpcol when resending requests not yet acknowledged as an indication of a possible duplicate due to a link failure. The administrative domain with which the user maintains an account relationship. The final interrogation is used to exit the process. Archived from the original on 4 July If cleared, the message MUST be locally processed. If Diameter credit-control proxies exist between the credit-control client and the credit-control server, they MUST advertise the Diameter credit-control application support.


Diameter (protocol) – Wikipedia

The specification of another cooperative standardization body e. The ” E ” Error bit — If set, the message contains a protocol error, and the message will not conform protcool the CCF described for this command.

To ensure that the end user’s account is not debited or credited multiple times for the same service event, only one place in the credit-control system should perform duplicate detection. Diametee 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.

In addition, there are services such as gaming and advertising that may credit as well 4060 debit a user account. TPotentially retransmitted message. The administrative domain providing services to a user. When an end user requests services such as SIP or messaging, the request is typically forwarded to a service element e.

Distribution of this memo is unlimited. The credit-control server deducts the used amount from the end user’s account; it may perform rating and make a new credit reservation if the service delivery is continuing.

A Command Code is used to determine the action that is to be taken for a particular message. Table of Contents 1.

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